ASTM A513/A513M-20a

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:A513/A513M −20a
Standard Specification for
Electric-Resistance-Welded Carbon and Alloy Steel
Mechanical Tubing
This standard is issued under the fixed designationA513/A513M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* hard or rationalized conversions apply to diameters, lengths
and tensile properties. Soft conversion applies to other SI
1.1 This specification covers electric-resistance-welded car-
measurements.
bon and alloy steel tubing for use as mechanical tubing.
1.7 This international standard was developed in accor-
1.2 This specification covers mechanical tubing made from
dance with internationally recognized principles on standard-
hot- or cold-rolled steel.
ization established in the Decision on Principles for the
1.3 This specification covers round, square, rectangular, and Development of International Standards, Guides and Recom-
special shape tubing. mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
Size Range
Type (Round Tubing)
Electric-Resistance-Welded Tubing outside diameter from ⁄2 to 15 in. 2. Referenced Documents
from Hot-Rolled Steel [12.7 to 380 mm]
2.1 ASTM Standards:
wall from 0.065 to 0.650 in.
[1.65 to 16.5 mm]
A370 Test Methods and Definitions for Mechanical Testing
Electric-Resistance-Welded Tubing outside diameter from ⁄8 to 12 in.
of Steel Products
from Cold-Rolled Steel [9.5 to 300 mm]
A700 Guide for Packaging, Marking, and Loading Methods
wall from 0.022 to 0.134 in.
[0.56 to 3.40 mm]
for Steel Products for Shipment
A751 Test Methods, Practices, and Terminology for Chemi-
1.3.1 Indeterminate wall thicknesses may be ordered. In
cal Analysis of Steel Products
those cases the more stringent tolerances ofTables 4, 6, 7, 8, 9,
A1008/A1008M Specification for Steel, Sheet, Cold-Rolled,
10, 11, 12, 16, and 17 shall apply. When sizes within the
Carbon, Structural, High-Strength Low-Alloy, High-
allowable ranges are ordered all other requirements of the
Strength Low-Alloy with Improved Formability, Solution
specification shall be met.
Hardened, and Bake Hardenable
1.4 This specification covers mechanical tubing in various
A1011/A1011M Specification for Steel, Sheet and Strip,
Grades (see Section 5), Types (see 12.1), and Thermal Condi-
Hot-Rolled, Carbon, Structural, High-Strength Low-
tions (12.1).
Alloy, High-Strength Low-Alloy with Improved
1.5 Optional supplementary requirements are provided and
Formability, and Ultra-High Strength
when desired, shall be so stated in the order.
A1039/A1039M Specification for Steel, Sheet, Hot Rolled,
Carbon, Commercial, Structural, and High-Strength Low-
1.6 The values stated in either SI units or inch-pound units
Alloy, Produced by Twin-Roll Casting Process
are to be regarded separately as standard.Within the text the SI
A1040 Guide for Specifying Harmonized Standard Grade
units are shown in brackets. The values stated in each system
Compositions for Wrought Carbon, Low-Alloy, andAlloy
may not be exact equivalents; therefore each system shall be
Steels
used independently of the other. Combining values from the
E213 Practice for Ultrasonic Testing of Metal Pipe and
two systems may result in non-conformance with the standard.
Tubing
Theinch-poundunitsshallapplyunlessthe“M”designationof
E273 Practice for Ultrasonic Testing of the Weld Zone of
this specification is specified in the order. In this specification
Welded Pipe and Tubing
E309 Practice for Eddy Current Examination of Steel Tubu-
lar Products Using Magnetic Saturation
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.09 on Carbon Steel Tubular Products. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2020. Published July 2020. Originally approved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in 1964. Last previous edition approved in 2020 as A513/A513M – 20. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/A0513_A0513M-20A. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A513/A513M−20a
E570 Practice for Flux Leakage Examination of Ferromag- melting is employed, the heat shall be defined as all of the
netic Steel Tubular Products ingots remelted from a single primary heat.
2.2 ASME Standard:
4.4 Steel may be cast in ingots or may be strand cast. When
B46.1 Surface Texture
steel of different grades is sequentially strand cast, identifica-
tion of the resultant transition material is required. The
2.3 Military Standards:
MIL-STD-129 Marking for Shipment and Storage producer shall remove the transition material by an established
procedure that positively separates the grades.
2.4 Federal Standard:
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
4.5 Tubes shall be made by the electric-resistance-welded
process and shall be made from hot- or cold-rolled steel as
3. Ordering Information
specified.
4.5.1 The weld shall not be located within the radius of the
3.1 Orders for material under this specification should
corners of any shaped tube unless specified by the purchaser.
include the following as required to adequately describe the
desired material:
5. Chemical Composition
3.1.1 Quantity (feet, metres, or number of lengths),
5.1 The steel shall conform to the requirements as to
3.1.2 Name of material (electric resistance-welded carbon
or alloy steel mechanical tubing), chemical composition prescribed in Table 1 or Table 2 (See
3.1.3 Types,conditionsandcodeletters,(SeeSections1and SpecificationA1040).Ifnogradeisspecified,GradesMT1010
12), to MT 1020 may be furnished. Analyses of steels other than
3.1.4 Thermal condition, (See 12.2), those listed are available. To determine their availability, the
3.1.5 Flash condition, (See 12.3), purchaser should contact the producer.
3.1.6 Grade designation, if required, (See Section 5),
5.2 When a carbon steel grade is ordered under this
3.1.7 Report chemical analysis and product analysis, if
specification, supplying an alloy grade that specifically re-
required (See Sections 6 and 7),
quires the addition of any element other than those listed for
3.1.8 Individual supplementary requirements, if required
the ordered grade in Tables 1 and 2 is not permitted.
(S1 to S10, inclusive),
5.3 Mechanical tubing with improved ductility may be
3.1.9 Cross section (round, square, rectangular and special
produced from Drawing Steel (TypesAand B), Deep Drawing
shapes),
Steel,orExtraDeepDrawingSteelsidentifiedinSpecifications
3.1.10 Dimensions, round, outside and inside and wall
A1008/A1008M, A1011/A1011M,or A1039/A1039M. Those
thickness (See 8.1 and 8.2) or square and rectangular, outside
Specifications offer guidance in the form of nonmandatory
dimension and wall thickness and corner radii, if required (See
Typical Ranges of Mechanical Properties.
9.1 and 9.2),
3.1.11 Length,round,milllengthsordefinitecutlength(See
6. Heat Analysis
8.3), square and rectangular, specified length (See 9.4),
6.1 An analysis of each heat of steel shall be made by the
3.1.12 Squareness of cut, round tubing, if required, (See
steel manufacturer to determine the percentages of the ele-
8.4),
ments specified; if secondary melting processes are employed,
3.1.13 Burrs removed, if required (See 11.2),
the heat analysis shall be obtained from one remelted ingot or
3.1.14 Protective coating (See 14.1),
the product of one remelted ingot of each primary melt. The
3.1.15 Special packaging (See 17.1),
heat analysis shall conform to the requirements specified,
3.1.16 Specification designation,
3.1.17 End use,
3.1.18 Special requirements,
TABLE 1 Chemical Requirements for Standard Low-Carbon
3.1.19 Special marking (See Section 16), and A
Steels
3.1.20 Straightness Test Method (See 8.5 and 9.6).
NOTE 1— Chemistry represents heat analysis. Product analysis, except
for rimmed or capped steel, is to be in accordance with usual practice as
4. Materials and Manufacture
shown in Table 3.
4.1 The steel may be made by any process. Chemical Composition Limits, %
Grade
Sulfur,
4.2 If a specific type of melting is required by the purchaser,
Phosphorus,
Designation
Carbon Manganese max
max
it shall be as stated on the purchase order.
4.3 The primary melting may incorporate separate degas-
B
MT 1010 0.02–0.15 0.30–0.60 0.035 0.035
sing or refining, and may be followed by secondary melting, MT 1015 0.10–0.20 0.30–0.60 0.035 0.035
MT X 1015 0.10–0.20 0.60–0.90 0.035 0.035
such as electroslag or vacuum-arc remelting. If secondary
MT 1020 0.15–0.25 0.30–0.60 0.035 0.035
MT X 1020 0.15–0.25 0.70–1.00 0.035 0.035
A
Rimmed or capped steels which may be used for the above grades are
Available from American Society of Mechanical Engineers (ASME), ASME
characterized by a lack of uniformity in their chemical composition, and for this
International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
reasonproductanalysisisnottechnologicallyappropriateunlessmisapplicationis
www.asme.org.
clearly indicated.
B
AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
The letters MT under grade designation indicate Mechanical Tubing.
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
A513/A513M−20a
A
TABLE 2 Chemical Requirements for Other Carbon and Alloy Steels
NOTE 1—Chemistry represents heat analysis. Product analysis, except for rimmed or capped steel, is to be in accordance with usual practice as shown
in Table 3.
Chemical Composition Limits, %
Grade
Phosphorus, Sulfur,
Designation
Carbon Manganese Silicon Nickel Chromium Molybdenum
max max
1006 0.08 max 0.45 max 0.030 0.035 . . . .
1008 0.10 max 0.50 max 0.035 0.035 . . . .
1009 0.15 max 0.60 max 0.035 0.035 . . . .
1010 0.08–0.13 0.30–0.60 0.035 0.035 . . . .
1012 0.10–0.15 0.30–0.60 0.035 0.035 . . . .
1015 0.13–0.18 0.30–0.60 0.035 0.035 . . . .
1016 0.13–0.18 0.60–0.90 0.035 0.035 . . . .
1017 0.15–0.20 0.30–0.60 0.035 0.035 . . . .
1018 0.15–0.20 0.60–0.90 0.035 0.035 . . . .
1019 0.15–0.20 0.70–1.00 0.035 0.035 . . . .
1020 0.18–0.23 0.30–0.60 0.035 0.035 . . . .
1021 0.18–0.23 0.60–0.90 0.035 0.035 . . . .
1022 0.18–0.23 0.70–1.00 0.035 0.035 . . . .
1023 0.20–0.25 0.30–0.60 0.035 0.035 . . . .
1024 0.18–0.25 1.30–1.65 0.035 0.035 . . . .
1025 0.22–0.28 0.30–0.60 0.035 0.035 . . . .
1026 0.22–0.28 0.60–0.90 0.035 0.035 . . . .
1027 0.22–0.29 1.20–1.55 0.035 0.035 . . . .
1030 0.28–0.34 0.60–0.90 0.035 0.035 . . . .
1033 0.30–0.36 0.70–1.00 0.035 0.035 . . . .
1035 0.32–0.38 0.60–0.90 0.035 0.035 . . . .
1040 0.37–0.44 0.60–0.90 0.040 0.050 . . . .
1050 0.48–0.55 0.60–0.90 0.040 0.050 . . . .
1060 0.55–0.65 0.60–0.90 0.040 0.050 . . . .
1340 0.38–0.43 1.60–1.90 0.035 0.040 0.15–0.35 . . .
1524 0.19–0.25 1.35–1.65 0.040 0.050 . . . .
4118 0.18–0.23 0.70–0.90 0.035 0.040 0.15–0.35 . 0.40–0.60 0.08–0.15
4130 0.28–0.33 0.40–0.60 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15–0.25
4140 0.38–0.43 0.75–1.00 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15–0.25
5130 0.28–0.33 0.70–0.90 0.035 0.040 0.15–0.35 . 0.80–1.10 .
8620 0.18–0.23 0.70–0.90 0.035 0.040 0.15–0.35 0.40–0.70 0.40–0.60 0.15–0.25
8630 0.28–0.33 0.70–0.90 0.035 0.040 0.15–0.35 0.40–0.70 0.40–0.60 0.15–0.25
A
Where the ellipsis (.) appears in this table, there is no requirement.
TABLE 3 Tolerances for Product Analysis for Steels Shown in
except that where the heat identity has not been maintained or
A,B
Tables 1 and 2
where the analysis is not sufficiently complete to permit
Variation, Over the Maxi-
conformance to be determined, the chemical composition
mum Limit or Under the
Limit, or Maximum of
determined from a product analysis made by the tubular
Minimum Limit
Element
Specified Range, %
manufacturer shall conform to the requirements specified for Under min, Over max,
% %
heat analysis. When requested in the order or contract, a report
Carbon to 0.15, incl 0.02 0.03
of such analysis shall be furnished to the purchaser.
over 0.15 to 0.40, incl 0.03 0.04
over 0.40 to 0.55, incl 0.03 0.05
7. Product Analysis
Manganese to 0.60, incl 0.03 0.03
over 0.60 to 1.15, incl 0.04 0.04
7.1 When requested on the purchase order, a product analy-
over 1.15 to 1.65, incl 0.05 0.05
sis shall be made by the supplier. The number and source of
Phosphorus . 0.01
Sulfur . 0.01
samples for such product analysis shall be based on the
Silicon to 0.30, incl 0.02 0.03
individual heat or lot identity of one of the following forms of
over 0.30 to 0.60 0.05 0.05
material:
Nickel to 1.00, incl 0.03 0.03
Chromium to 0.90, incl 0.03 0.03
7.1.1 Heat Identity Maintained—One product analysis per
over 0.90 to 2.10, incl 0.05 0.05
heat shall be made on either the flat-rolled stock or tube.
Molybdenum to 0.20, incl 0.01 0.01
7.1.2 Heat Identity Not Maintained—A product from one
over 0.20 to 0.40, incl 0.02 0.02
tube per 2000 ft [600 m] or less for sizes over 3 in. [75 mm], A
Individualdeterminationsmayvaryfromthespecifiedheatlimitsorrangestothe
and one tube per 5000 ft [1500 m] or less for sizes 3 in. [75 extent shown in this table, except that any element in a heat may not vary both
above and below a specified range.
mm] and under.
B
Where the ellipsis (.) appears in this table, there is no requirement.
7.2 Samples for product analysis shall be taken in accor-
dance with Practice A751. The composition thus determined
shall correspond to the requirements of Table 1 or Table 2.
made. Both retests for the elements in question shall meet the
7.3 If the original test for product analysis fails, retests of requirements of the specification; otherwise, all remaining
two additional lengths of flat-rolled stock or tubes shall be material in the heat or lot shall be rejected or, at the option of
A513/A513M−20a
the producer, each length of flat-rolled stock or tube may be measured at any one cross section. The ovality shall be within
individually tested for acceptance. Lengths of flat-rolled stock the tolerances except when the wall thickness is less than 3 %
or tubes which do not meet the requirements of the specifica- of the outside diameter.
tion shall be rejected.
8.6.1 In such cases for Types 1 and 2 (A.W.H.R. and
A.W.C.R.) the ovality may be 50 % greater than the outside
8. Permissible Variations in Dimensions for Round
tolerances but the mean outside diameter shall be within the
Tubing
specified tolerance.
8.1 Diameter and Wall Thickness (Hot-Rolled Steel)—
8.6.2 For Types 3, 4, 5, and 6 (S.D.H.R., S.D.C.R., DOM,
Variations from specified outside diameter for “as-welded” and
and S.S.I.D.) the additional ovality shall be as follows but the
“as-welded and annealed” tubing made from hot-rolled steel
mean outside diameter shall be within the specified tolerance:
shallnotexceedtheamountsprescribedinTable4.Permissible
Additional Ovality
variations in outside diameter for tubing that has been sink- Outside Diameter, in. [mm] Tolerance, in. [mm]
Up to 2 [50], incl 0.010 [0.25]
drawn for closer tolerance on outside diameter are shown in
Over 2 to 3 [50 to 75], incl 0.015 [0.38]
Table 5. Permissible variations in wall thickness for tubing that
Over 3 to 4 [75 to 100], incl 0.020 [0.51]
has been sink-drawn for closer tolerances on outside diameters Over 4 to 5 [100 to 125], incl 0.025 [0.64]
Over 5 to 6 [125 to 150], incl 0.030 [0.76]
are 610 % of the nominal wall or 60.010 in. [0.25 mm],
Over 6 to 7 [150 to 180], incl 0.035 [0.89]
whichever is greater. Permissible variations in wall thickness
Over 7 to 8 [180 to 205], incl 0.040 [1.02]
fortubingmadefromhot-rolledsteelareshowninTables6and Over 8 to 9 [205 to 230], incl 0.045 [1.14]
Over 9 to 10 [230 to 255], incl 0.050 [1.27]
7. Permissible variation in outside and inside diameter for
Over 10 to 11 [255 to 280], incl 0.055 [1.40]
tubing made from hot-rolled steel that has been Drawn Over a
Over 11 to 12 [280 to 305], incl 0.060 [1.52]
Mandrel (DOM) for closer tolerances are shown in Table 5 Over 12 to 12.500 [305 to 320], incl 0.065 [1.65]
with wall tolerances shown in Tables 8 and 9.
9. Permissible Variations in Dimensions of Square and
8.2 Diameter and Wall Thickness (Cold-Rolled Steel)—
Rectangular Tubing
Variations in outside diameter and inside diameter of “as-
welded” and “as-welded and annealed” tubing made from 9.1 DiameterandWallThickness—Permissible variations in
cold-rolled steel are shown in Table 10. Outside diameter outside dimensions for square and rectangular tubing shall be
tolerances for cold-rolled steel tubing, sink drawn and DOM, as given in Table 16. The wall thickness tolerance is 610 % of
are shown in Table 5. Wall thickness tolerances for “as- the nominal wall thickness.
welded” tubing made from cold-rolled steel are shown in
9.2 Corner Radii—Unless otherwise specified, the corners
Tables 11 and 12. Permissible variations in wall thickness for
of square and rectangular tubing shall be slightly rounded
round tubing, DOM for closer tolerances, are shown in Tables
inside and outside, consistent with wall thickness. The outside
8 and 9. Permissible variations in wall thickness for tubing that
corners may be slightly flattened. The radii of corners shall be
has been sink-drawn for closer tolerances on outside diameter
as given in Table 17.
are 610 % of the nominal wall or 60.010 in. [0.25 mm],
9.3 Squareness—Permissible variations for squareness shall
whichever is greater.
be determined by the following equation:
8.3 Length (Hot- and Cold-Rolled Steel)—Mechanical tub-
6b 5cx 0.006 in. 0.15 mm
~ !
ingiscommonlyfurnishedinmilllengths5ft[1.5m]andover.
Definite cut lengths are furnished when specified by the
where:
purchaser.Tolerancesfordefinitecutlengthsroundtubingshall
b = tolerance for out-of-square, and
be as given in Tables 13 and 14.
c = largest external dimension across flats.
8.4 Squareness of Cut (Hot- and Cold-Rolled Steel)—When
The squareness of sides is commonly determined by one of
specified, tolerance for squareness of cut of round tubing shall
the following methods.
beasgiveninTable15.Measurementsaremadewithuseofan
9.3.1 A square with two adjustable contact points on each
“L” square and feeler gauge.The long leg (blade) of the square
arm, is placed on two sides. A fixed feeler gauge is then used
to be equal to tube diameter plus a minimum of 1 in. [25.4
to measure the maximum distance between the free contact
mm]. Outside diameter burr to be removed for measurement.
point and the surface of the tubing.
8.5 Straightness—The straightness tolerance for round tub-
9.3.2 A square equipped with a direct reading vernier, may
ing is 0.030 in./3 ft [0.75 mm/1 m] lengths to 8.000 in. [200
be used to determine the angular deviation which, in turn, may
mm] outside diameter. For 8.000 in. [200 mm] outside diam-
be related to distance in in. [mm].
eter and above, straightness tolerance is 0.060 in./3 ft [1.5
9.4 Length—Variations from the specified length shall not
mm/1 m] lengths. For lengths under 1 ft [305 mm] the
exceed the amount prescribed in Table 18.
straightness tolerance shall be agreed upon between the pur-
chaser and producer.The test method for straightness measure-
9.5 Twist—Twist tolerances are shown in Table 19. The
ment is at the manufacturer’s option, unless a specific test
twist in square and rectangular tubing may be measured by
method is specified in the purchase order.
holding one end of the tubing on a surface plate and noting the
8.6 Ovality (Hot- and Cold-Rolled Steel)—Ovality is the height of either corner of the opposite end of same side above
difference between maximum and minimum outside diameters the surface plate. Twist may also be measured by the use of a
A513/A513M−20a
TABLE 4 Diameter Tolerances for Type I (A.W.H.R.) Round Tubing
NOTE 1—Measurements for diameter are to be taken at least 2 in. [50 mm] from the ends of the tubes.
Flash
Flash Controlled
Controlled
Flash-in- to 0.005 in.
Wall Thickness to 0.010 in.
A,B
Tubing [0.13 mm]. max
[0.26 mm] max
C,D
Outside Diameter Tubing
B,C
Tubing
Range
Outside Outside Outside Inside
in. [mm]
Diameter, ± Diameter, ± Diameter, ± Diameter, ±
E
Bwg in. [mm]
F
Tolerances
in. [mm] in. [mm] in. [mm] in. [mm]
1 1
⁄2 to 1 ⁄8, incl [15 to 30] 16 to 10 0.065 to 0.134 [1.7 to 3.4] 0.0035 [0.09] 0.0035 [0.09] 0.0035 [0.09] 0.020 [0.51]
Over 1 ⁄8 to 2, incl [30 to 50] 16 to 14 0.065 to 0.083 [1.7 to 2.1] 0.005 [0.13] 0.005 [0.13] 0.005 [0.13] 0.021 [0.53]
Over 1 ⁄8 to 2, incl [30 to 50] 13 to 7 0.095 to 0.180 [2.4 to 4.6] 0.005 [0.13] 0.005 [0.13] 0.005 [0.13] 0.025 [0.64]
Over 1 ⁄8 to 2, incl [30 to 50] 6 to 5 0.203 to 0.220 [5.2 to 5.6] 0.005 [0.13] 0.005 [0.13] 0.005 [0.13] 0.029 [0.74]
Over 1 ⁄8 to 2, incl [30 to 50] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.005 [0.13] 0.005 [0.13] 0.005 [0.13] 0.039 [0.99]
Over 2 to 2 ⁄2, incl [50 to 65] 16 to 14 0.065 to 0.083 [1.7 to 2.1] 0.006 [0.15] 0.006 [0.15] 0.006 [0.15] 0.022 [0.56]
Over 2 to 2 ⁄2, incl [50 to 65] 13 to 5 0.095 to 0.220 [2.4 to 5.6] 0.006 [0.15] 0.006 [0.15] 0.006 [0.15] 0.024 [0.61]
Over 2 to 2 ⁄2, incl [50 to 65] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.006 [0.15] 0.006 [0.15] 0.006 [0.15] 0.040 [1.02]
Over 2 ⁄2 to 3, incl [65 to 75] 16 to 14 0.065 to 0.083 [1.7 to 2.1] 0.008 [0.20] 0.008 [0.20] 0.008 [0.20] 0.024 [0.61]
Over 2 ⁄2 to 3, incl [65 to 75] 13 to 5 0.095 to 0.220 [2.4 to 5.6] 0.008 [0.20] 0.008 [0.20] 0.008 [0.20] 0.026 [0.66]
Over 2 ⁄2 to 3, incl [65 to 75] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.008 [0.20] 0.008 [0.20] 0.008 [0.20] 0.040 [1.02]
Over 2 ⁄2 to 3, incl [65 to 75] 2 to 0.320 [8.1] 0.284 to 0.320 [7.2 to 8.1] 0.010 [0.25] 0.010 [0.25] 0.010 [0.25] 0.048 [1.22]
Over 3 to 3 ⁄2, incl [75 to 90] 16 to 14 0.065 to 0.083 [1.7 to 2.1] 0.009 [0.23] 0.009 [0.23] 0.009 [0.23] 0.025 [0.64]
Over 3 to 3 ⁄2, incl [75 to 90] 13 to 5 0.095 to 0.220 [2.4 to 5.6] 0.009 [0.23] 0.009 [0.23] 0.009 [0.23] 0.027 [0.69]
Over 3 to 3 ⁄2, incl [75 to 90] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.009 [0.23] 0.009 [0.23] 0.009 [0.23] 0.043 [1.09]
Over 3 to 3 ⁄2, incl [75 to 90] 2 to 0.360 [9.1] 0.284 to 0.360 [7.2 to 9.1] 0.012 [0.30] 0.012 [0.30] 0.012 [0.30] 0.050 [1.27]
Over 3 ⁄2 to 4, incl [90 to 100] 16 to 14 0.065 to 0.083 [1.7 to 2.1] 0.010 [0.25] 0.010 [0.25] 0.010 [0.25] 0.026 [0.66]
Over 3 ⁄2 to 4, incl [90 to 100] 13 to 5 0.095 to 0.220 [2.4 to 5.6] 0.010 [0.25] 0.010 [0.25] 0.010 [0.25] 0.028 [0.72]
Over 3 ⁄2 to 4, incl [90 to 100] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.010 [0.25] 0.010 [0.25] 0.010 [0.25] 0.044 [1.12]
Over 3 ⁄2 to 4, incl [90 to 100] 2 to 0.500 [12.7] 0.284 to 0.500 [7.2 to 12.7] 0.015 [0.38] 0.015 [0.38] 0.015 [0.38] 0.053 [1.35]
Over 4 to 5, incl [100 to 130] 16 to 14 0.065 to 0.083 [1.7 to 2.1] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.036 [0.91]
Over 4 to 5, incl [100 to 130] 13 to 5 0.095 to 0.220 [2.4 to 5.6] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.045 [1.14]
Over 4 to 5, incl [100 to130] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.054 [1.37]
Over 4 to 5, incl [100 to 130] 2 to 0.500 [12.7] 0.284 to 0.500 [7.2 to 12.7] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.058 [1.47]
Over 5 to 6, incl [130 to 150] 16 to 10 0.065 to 0.134 [1.7 to 3.4] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.036 [0.91]
Over 5 to 6, incl [130 to 150] 9 to 5 0.148 to 0.220 [3.8 to 5.6] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.040 [10.02]
Over 5 to 6 incl [130 to 150] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.054 [1.37]
Over 5 to 6, incl [130 to 150] 2 to 0.500 [12.7] 0.284 to 0.500 [7.2 to 12.7] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.058 [1.47]
Over 6 to 8, incl [150 to 200] 11 to 10 0.120 to 0.134 [3.0 to 3.4] 0.025 [0.64] 0.025 [0.64] 0.025 [0.64] 0.043 [1.09]
Over 6 to 8, incl [150 to 200] 9 to 5 0.148 to 0.220 [3.8 to 5.6] 0.025 [0.64] 0.025 [0.64] 0.025 [0.64] 0.045 [1.14]
Over 6 to 8, incl [150 to 200] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.025 [0.64] 0.025 [0.64] 0.025 [0.64] 0.059 [1.50]
Over 6 to 8, incl [150 to 200] 2 to 0.500 [12.7] 0.284 to 0.500 [7.2 to 12.7] 0.025 [0.64] 0.025 [0.64] 0.025 [0.64] 0.063 [1.60]
Over 8 to 10, incl [200 to 250] 14 to 12 0.083 to 0.109 [2.1 to 2.8] 0.030 [0.76] 0.030 [0.76] 0.030 [0.76] 0.041 [1.04]
Over 8 to 10, incl [200 to 250] 11 to 10 0.120 to 0.134 [3.0 to 3.4] 0.030 [0.76] 0.030 [0.76] 0.030 [0.76] 0.043 [1.09]
Over 8 to 10, incl [200 to 250] 9 to 5 0.148 to 0.220 [3.8 to 5.6] 0.030 [0.76] 0.030 [0.76] 0.030 [0.76] 0.045 [1.14]
Over 8 to 10, incl [200 to 250] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.030 [0.76] 0.030 [0.76] 0.030 [0.76] 0.059 [1.50]
Over 8 to 10, incl [200 to 250] 2 to 0.500 [12.7] 0.248 to 0.500 [7.2 to 12.7] 0.030 [0.76] 0.030 [0.76] 0.030 [0.76] 0.063 [1.60]
Over 10 to 12, incl [250 to 300] 14 to 12 0.083 to 0.109 [2.1 to 2.8] 0.035 [0.89] 0.035 [0.89] 0.035 [0.89] 0.041 [1.04]
Over 10 to 12, incl [250 to 300] 11 to 10 0.120 to 0.134 [3.0 to 3.4] 0.035 [0.89] 0.035 [0.89] 0.035 [0.89] 0.043 [1.09]
Over 10 to 12, incl [250 to 300] 9 to 5 0.148 to 0.220 [3.8 to 5.6] 0.035 [0.89] 0.035 [0.89] 0.035 [0.89] 0.045 [1.14]
Over 10 to 12, incl [250 to 300] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.035 [0.89] 0.035 [0.89] 0.035 [0.89] 0.059 [1.50]
Over 10 to 12, incl [250 to 300] 2 to 0.500 [12.7] 0.284 to 0.500 [7.2 to 12.7] 0.035 [0.89] 0.035 [0.89] 0.035 [0.89] 0.063 [1.60]
Over 12 to 15, incl [300 to 380] 14 to 12 0.083 to 0.109 [2.1 to 2.8] 0.040 [1.02] 0.040 [1.02] 0.040 [1.02] 0.058 [1.47]
Over 12 to 15, incl [300 to 380] 11 to 10 0.120 to 0.134 [3.0 to 3.4] 0.040 [1.02] 0.040 [1.02] 0.040 [1.02] 0.058 [1.47]
Over 12 to 15, incl [300 to 380] 9 to 5 0.148 to 0.220 [3.8 to 5.6] 0.040 [1.02] 0.040 [1.02] 0.040 [1.02] 0.060 [1.52]
Over 12 to 15, incl [300 to 380] 4 to 3 0.238 to 0.259 [6.0 to 6.6] 0.040 [1.02] 0.040 [1.02] 0.040 [1.02] 0.074 [1.88]
Over 12 to 15, incl [300 to 380] 2 to 0.500 [12.7] 0.284 to 0.500 [7.2 to 12.7] 0.040 [1.02] 0.040 [1.02] 0.040 [1.02] 0.086 [2.18]
A
Flash-In-Tubing is produced only to outside diameter tolerances and wall thickness tolerances and the inside diameter welding flash does not exceed the wall thickness
or ⁄32 in. [2.4 mm], whichever is less.
B
Flash Controlled to 0.010 in. [0.25 mm] maximum tubing consists of tubing which is commonly produced only to outside diameter tolerances and wall thickness
tolerances, in which the height of the remaining welding flash is controlled not to exceed 0.010 in.
C
Flash Controlled to 0.005 in. [0.13 mm] maximum tubing is produced to outside diameters and wall thickness tolerance, inside diameter and wall thickness tolerances,
or outside diameters and inside diameter tolerances, in which the height of the remaining flash is controlled not to exceed 0.005 in.Any remaining flash is considered to
be part of the applicable inside diameter tolerances.
A513/A513M−20a
D
No Flash tubing is further processed by DOM for closer tolerances, produced to outside diameter and wall, inside diameter and wall, or outside diameter and inside
diameter, with no dimensional indication of inside diameter flash, and is available in Types 5 and 6.
E
Birmingham Wire Gauge.
F
The ovality shall be within the above tolerances except when the wall thickness is less than 3 % of the outside diameter, in such cases see 8.6.1.
TABLE 5 Diameter Tolerances for Types 3, 4, 5, and 6 (S.D.H.R., S.D.C.R., DOM, and S.S.I.D) Round Tubing
NOTE 1—Measurements for diameter are to be taken at least 2 in. [50 mm] from the ends of the tubes.
A,B
Types 5 and 6
Types 3, 4, (Sink Drawn)
B,C
B,C
A and 5, 6, (DOM) OD (DOM) ID
Wall %
OD Size Range
in. [mm] of OD
Over Under Over Under
in. [mm] in. [mm] in. [mm] in. [mm]
Up to 0.499 [12.67] all 0.004 [0.10] 0.000 [0.00] . . . . . .
0.500 to 1.699 [12.70 to 43.15] all 0.005 [0.13] 0.000 [0.00] 0.000 [0.00] 0.005 [0.13]
1.700 to 2.099 [43.18 to 53.31] all 0.006 [0.15] 0.000 [0.00] 0.000 [0.00] 0.006 [0.15]
2.100 to 2.499 [53.34 to 63.47] all 0.007 [0.18] 0.000 [0.00] 0.000 [0.00] 0.007 [0.18]
2.500 to 2.899 [63.50 to 73.63] all 0.008 [0.20] 0.000 [0.00] 0.000 [0.00] 0.008 [0.20]
2.900 to 3.299 [73.66 to 83.79] all 0.009 [0.23] 0.000 [0.00] 0.000 [0.00] 0.009 [0.23]
3.300 to 3.699 [83.82 to 93.95] all 0.010 [0.25] 0.000 [0.00] 0.000 [0.00] 0.010 [0.25]
3.700 to 4.099 [93.98 to 104.11] all 0.011 [0.28] 0.000 [0.00] 0.000 [0.00] 0.011 [0.28]
4.100 to 4.499 [104.14 to 114.27] all 0.012 [0.30] 0.000 [0.00] 0.000 [0.00] 0.012 [0.30]
4.500 to 4.899 [114.30 to 124.43] all 0.013 [0.33] 0.000 [0.00] 0.000 [0.00] 0.013 [0.33]
4.900 to 5.299 [124.46 to 134.59] all 0.014 [0.36] 0.000 [0.00] 0.000 [0.00] 0.014 [0.36]
5.300 to 5.549 [134.62 to 140.94] all 0.015 [0.38] 0.000 [0.00] 0.000 [0.00] 0.015 [0.38]
5.550 to 5.999 [140.97 to 152.37] under 6 0.010 [0.25] 0.010 [0.25] 0.010 [0.25] 0.010 [0.25]
6 and over 0.009 [0.23] 0.009 [0.23] 0.009 [0.23] 0.009 [0.23]
6.000 to 6.499 [152.40 to 165.07] under 6 0.013 [0.33] 0.013 [0.33] 0.013 [0.33] 0.013 [0.33]
6 and over 0.010 [0.25] 0.010 [0.25] 0.010 [0.25] 0.010 [0.25]
6.500 to 6.999 [165.10 to 177.77] under 6 0.015 [0.38] 0.015 [0.38] 0.015 [0.38] 0.015 [0.38]
6 and over 0.012 [0.30] 0.012 [0.30] 0.012 [0.30] 0.012 [0.30]
7.000 to 7.499 [177.80 to 190.47] under 6 0.018 [0.46] 0.018 [0.46] 0.018 [0.46] 0.018 [0.46]
6 and over 0.013 [0.33] 0.013 [0.33] 0.013 [0.33] 0.013 [0.33]
7.500 to 7.999 [190.50 to 203.17] under 6 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51]
6 and over 0.015 [0.38] 0.015 [0.38] 0.015 [0.38] 0.015 [0.38]
8.000 to 8.499 [203.20 to 215.87] under 6 0.023 [0.58] 0.023 [0.58] 0.023 [0.58] 0.023 [0.58]
6 and over 0.016 [0.41] 0.016 [0.41] 0.016 [0.41] 0.016 [0.41]
8.500 to 8.999 [215.90 to 228.57} under 6 0.025 [0.64] 0.025 [0.66] 0.025 [0.66] 0.025 [0.64]
6 and over 0.017 [0.43] 0.017 [0.43] 0.017 [0.43] 0.017 [0.43]
9.000 to 9.499 [228.60 to 241.27] under 6 0.028 [0.71] 0.028 [0.71] 0.028 [0.71] 0.028 [0.71]
6 and over 0.019 [0.48] 0.019 [0.48] 0.019 [0.48] 0.019 [0.48]
9.500 to 9.999 [241.30 to 253.97] under 6 0.030 [0.76] 0.030 [0.76] 0.030 [0.76] 0.030 [0.76]
6 and over 0.020 [0.51] 0.020 [0.51] 0.020 [0.51] 0.020 [0.51]
10.000 to 10.999 [254.00 to 279.37] all 0.034 [0.85] 0.034 [0.85] 0.034 [0.85] 0.034 [0.85]
11.000 to 11.999 [279.40 to 304.77] all 0.035 [0.89] 0.035 [0.89] 0.035 [0.89] 0.035 [0.89]
12.000 to 12.999 [304.80 to 330.17] all 0.036 [0.91] 0.036 [0.91] 0.036 [0.94] 0.036 [0.91]
13.000 to 13.999 [330.20 to 355.57] all 0.037 [0.94] 0.037 [0.94] 0.037 [0.94] 0.037 [0.94]
14.000 to 14.999 [355.60 to 380.97] all 0.038 [0.97] 0.038 [0.97] 0.038 [0.97] 0.038 [0.97]
A
Tubing, flash in or flash controlled which is further processed without mandrel to obtain tolerances closer than those shown in Tables 4 and 10.
B
The ovality shall be within the above tolerances except when the wall thickness is less than 3 % of the outside diameter, in such cases see 8.6.2.
C
Tubing produced to outside diameter and wall thickness, or inside diameter and wall thickness, or outside diameter and inside diameter, by DOM to obtain tolerances
closer than those shown in Tables 4 and 10 and no dimensional indication of inside diameter flash.
beveled protractor equipped with a level, and noting the rectangular and D shapes. Manufacturing practices limit the
angular deviation on opposite ends, or at any point throughout size range and section available from the various producers.
the length.
These special sections may be made through turkshead rolls or
1 through a die with or without use of a mandrel. Since the
9.6 Straightness—The straightness tolerance is ⁄16 in.⁄3 ft
sections are special, dies and other tools are not held available.
[1.7mm/1m].Thetestmethodforstraightnessmeasurementis
Therefore, when inquiring for shapes other than square and
at the manufacturer’s option, unless a specific test method is
rectangular, it is essential to give full details as to dimensions
specified in the purchase order.
and finish.
10. Tubing Sections Other Than Square and Rectangular
10.1 In addition to square and rectangular tubing, many 11. Workmanship, Finish, and Appearance
producers supply a variety of special sections, such as oval,
11.1 The tubing shall be free of injurious defects and shall
streamlined, hexagonal, octagonal, round inside and hexagonal
have a workmanlike finish.
or octagonal outside, ribbed inside or out, triangular, rounded
A513/A513M−20a
TABLE 6 Wall Thickness Tolerance for Type I (A.W.H.R.) Round Tubing (Inch Units)
A
Outside Diameter,
Wall Thickness 3 15 3 1
⁄4 to 1, Over 1 to Over 1 ⁄16 Over 3 ⁄4 to Over 4 ⁄2 to Over 6 to 8, Over 8 to 10, Over 10 to 12, Over 12 to 15,
15 3 1
incl 1 ⁄16, incl to 3 ⁄4, incl 4 ⁄2, incl 6, incl incl incl incl incl
B
Wall Thickness Tolerances, in., ±
A A
in. Bwg
+−+−+−+−+−+ – + – + – + –
0.065 16 0.005 0.009 0.004 0.010 0.003 0.011 0.002 0.012 0.002 0.012 0.002 0.012 . . . . . .
0.072 15 0.005 0.009 0.004 0.010 0.003 0.011 0.002 0.012 0.002 0.012 0.002 0.012 0.003 0.013 . . . .
0.083 14 0.006 0.010 0.005 0.011 0.004 0.012 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013
0.095 13 0.006 0.010 0.005 0.011 0.004 0.012 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013
0.109 12 0.006 0.010 0.005 0.011 0.004 0.012 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013
0.120 11 0.006 0.010 0.005 0.011 0.004 0.012 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013
0.134 10 0.006 0.010 0.005 0.011 0.004 0.012 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013 0.003 0.013
0.148 9 . . 0.006 0.012 0.005 0.013 0.004 0.014 0.004 0.014 0.004 0.014 0.004 0.014 0.004 0.014 0.004 0.014
0.165 8 . . 0.006 0.012 0.005 0.013 0.004 0.014 0.004 0.014 0.004 0.014 0.004 0.014 0.004 0.014 0.004 0.014
0.180 7 . . 0.006 0.012 0.005 0.013 0.004 0.014 0.004 0.014 0.004 0.014 0.004 0.014 0.004 0.014 0.004 0.014
0.203 6 . . . . 0.007 0.015 0.006 0.016 0.005 0.017 0.005 0.017 0.005 0.017 0.005 0.017 0.005 0.017
0.220 5 . . . . 0.007 0.015 0.006 0.016 0.005 0.017 0.005 0.017 0.005 0.017 0.005 0.017 0.005 0.017
0.238 4 . . . . 0.012 0.020 0.011 0.021 0.010 0.022 0.010 0.022 0.010 0.022 0.010 0.022 0.010 0.022
0.259 3 . . . . 0.013 0.021 0.012 0.022 0.011 0.023 0.011 0.023 0.011 0.023 0.011 0.023 0.011 0.023
0.284 2 . . . . 0.014 0.022 0.013 0.023 0.012 0.024 0.012 0.024 0.012 0.024 0.012 0.024 0.012 0.024
0.300 1 . . . . 0.015 0.023 0.014 0.024 0.013 0.025 0.013 0.025 0.013 0.025 0.013 0.025 0.013 0.025
0.320 . . . . 0.016 0.024 0.015 0.025 0.014 0.026 0.014 0.026 0.014 0.026 0.014 0.026 0.014 0.026
0.344 . . . . 0.017 0.025 0.016 0.026 0.015 0.027 0.015 0.027 0.015 0.027 0.015 0.027 0.015 0.027
0.360 . . . . 0.017 0.025 0.016 0.026 0.015 0.027 0.015 0.027 0.015 0.027 0.015 0.027 0.015 0.027
0.375 . . . . . . 0.016 0.026 0.015 0.027 0.015 0.027 0.015 0.027 0.015 0.027 0.015 0.027
0.406 . . . . . . 0.017 0.027 0.016 0.028 0.016 0.028 0.016 0.028 0.016 0.028 0.016 0.028
0.438 . . . . . . 0.017 0.027 0.016 0.028 0.016 0.028 0.016 0.028 0.016 0.028 0.016 0.028
0.469 . . . . . . . . 0.016 0.028 0.016 0.028 0.016 0.028 0.016 0.028 0.016 0.028
0.500 . . . . . . . . 0.016 0.028 0.016 0.028 0.016 0.028 0.016 0.028 0.016 0.028
A
Birmingham Wire Gauge.
B
Where the ellipsis (.) appears in this table, the tolerance is not addressed.

A513/A513M−20a
TABLE 7 Wall Thickness Tolerance for Type I (A.W.H.R.) Round Tubing (SI Units)
Outside Diameter, mm
20 to 25 Over 25 to 50 Over 50 to 95 Over 95 to 115 Over 115 to 150 Over 150 to 200 Over 200 to 250 Over 250 to 305 Over 305 to 380
Wall
mm, incl mm, incl mm, incl mm incl mm incl mm Incl mm incl mm Incl mm, incl
Thickness
A
mm
Wall Thickness Tolerances, mm, ±
+ – + – + – + – + – +–+–+–+–
1.65 0.13 0.23 0.10 0.25 0.08 0.28 0.05 0.30 0.05 0.30 0.05 0.30 . . . . . . . . . . . . . . . . . .
1.83 0.13 0.23 0.10 0.25 0.08 0.28 0.05 0.30 0.05 0.30 0.05 0.30 0.08 0.33 . . . . . . . . . . . .
2.11 0.15 0.25 0.13 0.28 0.10 0.30 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33
2.41 0.15 0.25 0.13 0.28 0.10 0.30 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33
2.77 0.15 0.25 0.13 0.28 0.10 0.30 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33
3.05 0.15 0.25 0.13 0.28 0.10 0.30 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33
3.40 0.15 0.01 0.13 0.28 0.10 0.30 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33 0.08 0.33
3.76 . . . . . . 0.15 0.30 0.13 0.33 0.10 0.36 0.10 0.36 0.10 0.36 0.10 0.36 0.10 0.36 0.10 0.36
4.19 . . . . . . 0.15 0.30 0.13 0.33 0.10 0.36 0.10 0.36 0.10 0.36 0.10 0.36 0.10 0.36 0.10 0.36
4.57 . . . . . . 0.16 0.30 0.13 0.33 0.10 0.36 0.10 0.36 0.10 0.36 0.10 0.36 0.10 0.36 0.10 0.36
5.16 . . . . . . . . . . . . 0.18 0.38 0.15 0.41 0.13 0.43 0.13 0.43 0.13 0.43 0.13 0.43 0.13 0.43
5.59 . . . . . . . . . . . . 0.18 0.38 0.15 0.41 0.13 0.43 0.13 0.43 0.13 0.43 0.13 0.43 0.13 0.43
6.05 . . . . . . . . . . . . 0.30 0.51 0.28 0.53 0.25 0.56 0.25 0.56 0.25 0.56 0.25 0.56 0.25 0.56
6.58 . . . . . . . . . . . . 0.33 0.53 0.30 0.56 0.28 0.58 0.28 0.58 0.28 0.58 0.28 0.58 0.28 0.58
7.21 . . . . . . . . . . . . 0.36 0.56 0.33 0.58 0.30 0.61 0.30 0.61 0.30 0.61 0.30 0.61 0.30 0.61
7.62 . . . . . . . . . . . . 0.38 0.58 0.36 0.61 0.33 0.64 0.33 0.64 0.33 0.64 0.33 0.64 0.33 0.64
8.13 . . . . . . . . . . . . 0.41 0.61 0.38 0.64 0.36 0.66 0.36 0.66 0.36 0.66 0.36 0.66 0.36 0.66
8.74 . . . . . . . . . . . . 0.43 0.64 0.41 0.66 0.38 0.69 0.38 0.69 0.38 0.69 0.38 0.69 0.38 0.69
9.14 . . . . . . . . . . . . 0.43 0.64 0.41 0.66 0.38 0.69 0.38 0.66 0.38 0.66 0.38 0.66 0.38 0.66
9.53 . . . . . . . . . . . . . . . . . . 0.41 0.66 0.38 0.69 0.38 0.69 0.38 0.69 0.38 0.69 0.38 0.69
10.31 . . . . . . . . . . . . . . . . . . 0.43 0.69 0.41 0.71 0.41 0.71 0.41 0.71 0.41 0.71 0.41 0.71
11.13 . . . . . . . . . . . . . . . . . . 0.43 0.69 0.41 0.71 0.41 0.71 0.41 0.71 0.41 0.71 0.41 0.71
11.91 . . . . . . . . . . . . . . . . . . . . . . . . 0.41 0.71 0.41 0.71 0.41 0.71 0.41 0.71 0.41 0.71
12.70 . . . . . . . . . . . . . . . . . . . . . . . . 0.41 0.71 0.41 0.71 0.41 0.71 0.41 0.71 0.41 0.71
A
Where the ellipsis (.) appears in this table, the tolerance is not addressed.

A513/A513M−20a
TABLE 8 Wall Thickness Tolerances of Types 5 and 6 (DOM and TABLE 9 Wall Thickness Tolerances of Types 5 and 6 (DOM and
S.S.I.D.) Round Tubing (Inch Units) S.S.I.D.) Round Tubing (SI Units)
A
Outside Diameter, in. Outside Diameter, mm
3 7 7 7 3
Wall ⁄8 to ⁄8, Over ⁄8 to Over 1 ⁄8 to Over 3 ⁄4 to 10 to 20, Over 20 to 50, Over 50 to 100, Over 100 to
Wall
7 3
Thickness incl 1 ⁄8, incl 3 ⁄4, incl 15, incl incl incl incl 380, incl
Thick-
A,B A
Wall Thickness Tolerances, in., ± ness Wall Thickness Tolerances, mm
mm
A A
in. Bwg + −+−+−+− + −+−+−+−
0.035 20 0.002 0.002 0.002 0.002 0.002 0.002 . . 0.89 0.05 0.05 0.05 0.05 0.05 0.05 . .
0.049 18 0.002 0.002 0.002 0.003 0.002 0.003 . . 1.24 0.05 0.05 0.05 0.08 0.05 0.08 . .
0.065 16 0.002 0.002 0.002 0.003 0.002 0.003 0.004 0.004 1.65 0.05 0.05 0.05 0.08 0.05 0.08 0.10 0.10
0.083 14 0.002 0.002 0.002 0.003 0.003 0.003 0.004 0.005 2.11 0.05 0.05 0.05 0.08 0.08 0.08 0.10 0.13
0.095 13 0.002 0.002 0.002 0.003 0.003 0.003 0.004 0.005 2.41 0.05 0.05 0.05 0.08 0.08 0.08 0.10 0.13
0.109 12 0.002 0.003 0.002 0.004 0.003 0.003 0.005 0.005 2.77 0.05 0.08 0.05 0.10 0.08 0.08 0.13 0.13
0.120 11 0.003 0.003 0.002 0.004 0.003 0.003 0.005 0.005 3.05 0.08 0.08 0.05 0.10 0.08 0.08 0.13 0.13
0.134 10 . . 0.002 0.004 0.003 0.003 0.005 0.005 3.40 . . 0.05 0.10 0.08 0.08 0.13 0.13
0.148 9 . . 0.002 0.004 0.003 0.003 0.005 0.005 3.76 . . 0.05 0.10 0.08 0.08 0.13 0.13
0.165 8 . . 0.003 0.004 0.003 0.004 0.005 0.006 4.19 . . 0.08 0.10 0.08 0.10 0.13 0.15
0.180 7 . . 0.004 0.004 0.003 0.005 0.006 0.006 4.57 . . 0.10 0.10 0.08 0.13 0.15 0.15
0.203 6 . . 0.004 0.005 0.004 0.005 0.006 0.007 5.16 . . 0.10 0.13 0.10 0.13 0.15 0.18
0.220 5 . . 0.004 0.006 0.004 0.006 0.007 0.007 5.59 . . 0.10 0.15 0.10 0.15 0.18 0.18
0.238 4 . . 0.005 0.006 0.005 0.006 0.007 0.007 6.05 . . 0.13 0.15 0.13 0.15 0.18 0.18
0.259 3 . . 0.005 0.006 0.005 0.006 0.007 0.007 6.58 . . 0.13 0.15 0.13 0.13 0.18 0.18
0.284 2 . . 0.005 0.006 0.005 0.006 0.007 0.007 7.21 . . 0.13 0.15 0.13 0.15 0.18 0.18
0.300 1 . . 0.006 0.006 0.006 0.006 0.008 0.008 7.62 . . 0.15 0.15 0.15 0.15 0.20 0.20
0.320 . . 0.007 0.007 0.007 0.007 0.008 0.008 8.13 . . 0.18 0.18 0.18 0.18 0.20 0.20
0.344 . . 0.008 0.008 0.008 0.008 0.009 0.009 8.74 . . 0.20 0.20 0.20 0.20 0.23 0.23
0.375 . . . . 0.009 0.009 0.009 0.009 9.53 . . . . 0.23 0.23 0.23 0.23
0.400 . . . . 0.010 0.010 0.010 0.010 10.16 . . . . 0.25 0.25 0.25 0.25
0.438 . . . . 0.011 0.011 0.011 0.011 11.13 . . . . 0.28 0.28 0.28 0.28
0.460 . . . . 0.012 0.012 0.012 0.012 11.68 . . . . 0.30 0.30 0.30 0.30
0.480 . . . . 0.012 0.012 0.012 0.012 12.19 . . . . 0.30 0.30 0.30 0.30
0.531 . . . . 0.013 0.013 0.013 0.013 13.49 . . . . 0.33 0.33 0.33 0.33
0.563 . . . . 0.013 0.013 0.013 0.013 14.3 . . . . 0.33 0.33 0.33 0.33
0.580 . . . . 0.014 0.014 0.014 0.014 14.73 . . . . 0.36 0.36 0.36 0.36
0.600 . . . . 0.015 0.015 0.015 0.015 15.24 . . . . 0.38 0.38 0.38 0.38
0.625 . . . . 0.016 0.016 0.016 0.016 15.88 . . . . 0.41 0.41 0.41 0.016
0.650 . . . . 0.017 0.017 0.017 0.017 16.51 . . . { 0.43 0.43 0.43 0.43
A A
Birmingham Wire Gauge. Where the ellipsis (.) appears in this table, the tolerance is not addressed.
B
Where the ellipsis (.) appears in this table, the tolerance is not addressed.
12.2.2 When a final thermal treatment is specified, a tight
oxide is normal. When an oxide-free surface is specified, the
11.2 When burrs must be removed from one or both ends, it
tube may be bright annealed or pickled at the manufacturer’s
shall be specified in the purchase order.
option.
12.3 Flash conditions under which tubing may be furnished
12. Types and Conditions
are as follows. The flash shall be removed from the outside
12.1 The types of tubing covered by this specification are:
diameter of tubing covered by this specification. Tubing
Type
furnished to this specification may have the following condi-
Number Code Letters Description
tions of welding flash on the inside diameter.
1a A.W.H.R. “as-welded” from hot-rolled steel (with mill
12.3.1 Flash-In—Tubing in which the inside diameter weld-
scale)
1b A.W.P.O. “as-welded” from hot-rolled pickled and 3
ing flash does not exceed the wall thickness or ⁄32 in. [2.38
oiled steel (mill scale removed)
mm],whicheverisless.ThisconditionisavailableinTypes1a,
2 A.W.C.R. “as-welded” from cold-rolled steel
3 S.D.H.R. “sink-drawn” hot-rolled steel 1b, 2, 3, and 4.
4 S.D.C.R. “sink-drawn,” cold-rolled steel
12.3.2 FlashControlledto0.010in.[0.26mm],maximum—
5 DOM Drawn Over a Mandrel
Tubing in which the height of the remaining welding flash is
6 S.S.I.D. special smooth inside diameter
controlled so as not to exceed 0.010 in. This condition is
12.2 The thermal conditions under which tubing may be
availableinTypes1a,1b,and2over1 ⁄8-in.[28.5-mm]outside
furnished are:
diameter and Types 3 and 4.
Code Description
12.3.3 FlashControlledto0.005in.[0.13mm],maximum—
NA Not Annealed; in the as-welded or as-
Tubing produced to outside diameter and wall thickness, inside
drawn condition
SRA Stress Relieved Annealed (at a
diameter and wall thickness, or outside diameter and inside
tempe
...