ASTM A1022/A1022M-22a

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A1022/A1022M − 22 A1022/A1022M − 22a
Standard Specification for
Deformed and Plain Stainless Steel Wire and Welded Wire
for Concrete Reinforcement
This standard is issued under the fixed designation A1022/A1022M; 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*
1.1 This specification covers stainless steel wire and welded wire reinforcement produced from hot-rolled stainless steel rod. The
stainless steel wire is cold-worked, drawn or rolled, plain (non-deformed) or deformed or a combination of deformed and plain.
It is used as concrete reinforcement for applications requiring resistance to corrosion or controlled magnetic permeability, or both.
Common wire sizes and dimensions are found in this specification. Actual wire sizes are not restricted to those shown in the tables.
1.2 A supplementary requirement (S1) is provided and shall apply only when specified by the purchaser. In order to obtain a
corrosion tested or controlled magnetic permeability product, steel conforming to Supplementary Requirement S1 should be
ordered.
1.3 The chemical composition of the steel (stainless alloy) shall be selected for suitability to the application involved by agreement
between the manufacturer and the purchaser. Unless otherwise specified by the purchaser, Specification A276 shall be used for
chemical requirements. The UNS designations are to be included with the type number and noted in brackets. Examples of
austenitic stainless steel designations are Type 304 [S30400], 304L [S30403], 316 [S31600], 316L [S31603], 316N [S31651],
316LN [S31653] and examples of duplex stainless steel designations are Type 2205 [S32205] and 329 [S32900].
NOTE 1—Only austenitic and duplex stainless steels are usually recommended for use as reinforcement in concrete because of their high corrosion
resistance. Austenitic stainless steels have good general corrosion resistance, strength characteristics which can be improved by cold working, good
toughness and ductility properties at low temperatures, and low magnetic permeability. Duplex stainless steels have generally a corrosion resistance
greater than that of most austenitic steels and are magnetic. Other stainless steels with different chemical compositions than the series and types mentioned
above, may be used for less restrictive applications.
1.4 Wire for welded wire reinforcement is generally manufactured at 75 ksi [520 MPa] yield strength level. Other strength levels
shall be by agreement between the purchaser and manufacturer.
NOTE 2—The term used to refer to yield strength levels are the same as those in ASTM Standards for welded wire reinforcement.
1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard.specification.
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.05
on Steel Reinforcement.
Current edition approved Sept. 1, 2022Nov. 1, 2022. Published September 2022November 2022. Originally approved in 2001. Last previous edition approved in 20162022
as A1022/A1022M – 16b.22. DOI: 10.1520/A1022_A1022M-22.10.1520/A1022_A1022M-22A.
*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
A1022/A1022M − 22a
1.6 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.
2. Referenced Documents
2.1 ASTM Standards:
A276 Specification for Stainless Steel Bars and Shapes
A342/A342M Test Methods for Permeability of Weakly Magnetic Materials
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
E83 Practice for Verification and Classification of Extensometer Systems
2.2 Military Standards:
MIL-STD-129 Marking for Shipment and Storage
2.3 Federal Standard:
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
2.4 ACI Standard:
ACI 318 Building Code Requirements for Structural Concrete
2.5 Adjuncts:
Weld Tester Drawing
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 stainless steel plain wire and welded plain wire reinforcement—as used within the scope and intent of this specification,
designates a material composed of cold-worked stainless steel wire, as cold-drawn or cold-rolled from stainless steel hot-rolled rod.
3.1.1.1 Discussion—
The welded intersections provide the bond strength for shear resistance.
3.1.2 stainless steel deformed wire and welded deformed wire reinforcement—as used within the scope and intent of this
specification, designates a material composed of cold- worked deformed stainless steel wire as cold-drawn or cold-rolled from
stainless steel hot-rolled rod.
3.1.2.1 Discussion—
Deformations can be indented or raised rib (protrusion) types. As with plain stainless steel welded wire, the welded intersections
provide bond strength for shear resistance and the deformations add to the bond strength.
3.1.3 convoluted wire—when wire for welded wire reinforcement is formed into a sinusoidal wave shape, it is commonly referred
to as convoluted wire.
3.1.3.1 Discussion—
The wire is used in the manufacture of cages for certain applications of concrete pipe reinforcement. Only plain wire is normally
subject to convolution.
4. Ordering Information
4.1 Orders for stainless steel wire or welded wire reinforcement under this specification shall contain the following information:
4.1.1 Quantity (weight [mass]) or square area for welded wire reinforcement,
4.1.2 Name of material (cold-drawn or rolled stainless steel wire, or welded wire reinforcement, plain or deformed, for concrete),
4.1.3 Wire size number, wire spacing, and sheet or roll width and length for welded wire reinforcement,
4.1.4 Minimum yield strength or grade, and
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://www.dodssp.daps.mil.
Available from American Concrete Institute (ACI), 38800 Country Club Dr., Farmington Hills, MI 48331-3439, http://www.concrete.org.
Available from ASTM International Headquarters. Order Adjunct No. ADJA0185. Original adjunct produced in 1967.
A1022/A1022M − 22a
TABLE 1 Dimensional Requirements for Plain Wire—SI Units
Size Nominal Diameter, Nominal Area,
A 2
Number mm mm
MW 5 2.50 5
MW 10 3.60 10
MW 15 4.40 15
MW 20 5.00 20
MW 25 5.60 25
MW 30 6.20 30
MW 35 6.70 35
MW 40 7.10 40
MW 45 7.60 45
MW 50 8.00 50
MW 55 8.40 55
MW 60 8.70 60
MW 65 9.10 65
MW 70 9.40 70
MW 80 10.10 80
MW 90 10.70 90
MW 100 11.30 100
MW 120 12.40 120
MW 130 12.90 130
MW 200 15.95 200
MW 290 19.22 290
A
This table represents a hard metrication of the most readily available sizes in the
welded wire reinforcement industry. Table 1 shall be used in projects that are
designed using SI units: Table 2 shall be used on projects designed using
inch-pound units. Areas of wire shall be checked with the most efficient and readily
available material from manufacturers. Other wire sizes are available and many
manufacturers can produce them in 1-mm increments.
4.1.5 ASTM designation A1022 [A1022M] and year of issue.
NOTE 3—A typical ordering description is as follows: For in-lbs units: (100 000 square feet of welded wire for concrete reinforcement, 12 × 12 – W 10
× W 10 in flat sheets 96-in. wide by 15-ft long) in secured bundles for crane or forklift truck lifts. For metric units: 10 000 square metres of welded wire
for concrete reinforcement, 305 × 305 – MW 65 × MW 65, in flat sheets 2438-mm wide by 4.6-mm long in secured bundles for crane or forklift truck
lifts. Testing shall be in accordance with Test Methods A370.
NOTE 4—Longitudinal wires can be variably spaced. (For example, V × 12 – D 10 × D 10 or V × 305 – MD 65 × MD 65). See the Tables 1 and 2 for
wire sizes.
4.2 The purchaser shall have the option to specify additional requirements, including but not limited to, the following:
4.2.1 Specified corrosion testing requirements,
4.2.2 Type of stainless steel,
4.2.3 Special heat treatment or condition,
4.2.4 Supplementary requirements,
4.2.5 Exclusion of over-steeling, if required (see 10.4),
4.2.6 Report on tests performed on the stainless steel wire or welded wire reinforcement being furnished, if desired (see 16.1), and
4.2.7 Packaging (see Section 17).
5. Materials
5.1 The stainless steel shall be made by any commercially accepted process.
5.2 Cold-worked wire or rod used in the manufacture of stainless steel welded wire reinforcement shall be in accordance with the
chemical and physical requirements of Specification A276.
A1022/A1022M − 22a
TABLE 2 Dimensional Requirements for Plain Wire—Inch-pound
Units
Size Nominal Diameter, Nominal Area,
A 2
Number in. in
W 0.5 0.080 0.005
W 1.2 0.124 0.012
W 1.4 0.134 0.014
W 2 0.160 0.020
W 2.5 0.178 0.025
W 2.9 0.192 0.029
W 3.5 0.211 0.035
W 4 0.226 0.040
W 4.5 0.239 0.045
W 5 0.252 0.050
W 5.5 0.265 0.055
W 6 0.276 0.060
W 8 0.319 0.080
W 10 0.357 0.100
W 11 0.374 0.110
W 12 0.391 0.120
W 14 0.422 0.140
W 16 0.451 0.160
W 18 0.479 0.180
W 20 0.505 0.200
W 22 0.529 0.220
W 24 0.533 0.240
W 26 0.575 0.260
W 28 0.597 0.280
W 30 0.618 0.300
W 31 0.628 0.310
W 45 0.757 0.450
A
This table represents the most readily available sizes in the welded wire
reinforcement industry in sizes using inch-pound units. Areas of wire shall be
checked with the most efficient and readily available material from manufacturers.
Other wire sizes are available and many manufacturers can produce them in
0.0015-in. increments.
TABLE 3 Bend Test Requirements—Plain Wire
Size Number Of
Bend Test
Wire
W7 [MW 45] Bend around a pin the diameter that is equal to
and smaller the diameter of the specimen
Larger than Bend around a pin the diameter that is equal to
W7 [MW 45] twice the diameter (2d) of the specimen
6. Manufacture
6.1 Stainless steel wire for welded wire reinforcement shall be cold worked, either drawn or rolled from steel rod that is rolled
from properly identified heats of mold-cast or strand-cast steel.
6.2 The wire or rod shall be assembled into welded wire reinforcement by automatic machines or by other suitable mechanical
means which will assure accurate spacing and alignment of all wires of the finished welded wire reinforcement. The finished
welded wire reinforcement shall be furnished in flat or bent sheets or in rolls as specified by the purchaser.
6.3 Longitudinal and transverse wires shall be securely connected at every intersection by a process of electrical-resistance
welding which employs the principle of fusion combined with pressure.
6.4 Welded wire reinforcement of proper grade and quality shall result in a strong, serviceable product having substantially square
or rectangular openings. It shall be fabricated and finished in a quality manner and conform to this specification.
7. Mechanical Property Requirements—Wire, Plain and Deformed
7.1 General Requirements for Plain Wire:
A1022/A1022M − 22a
TABLE 4 Permissible Variation in Wire Diameter—Plain Wire
Permissible Variation Plus and Minus, Maximum Permissible Out-of-Round,
Size Number, in-lbs. [SI] Nominal Diameter, in. [mm]
A
in. [mm] in. [mm]
Smaller than W 5 [MW 32] Under 0.252 [6.4] 0.003 [0.08] 0.003 [0.08]
W 5 [MW 32] to W 12 [MW 77], incl 0.252 [6.4] to 0.391 [9.93], incl 0.004 [0.10] 0.004 [0.10]
Over W 12 [MW 77] to W 20 [MW 130], Over 0.391 [9.93] to 0.505 [12.83], incl 0.006 [0.15] 0.006 [0.15]
incl
Over W 20 [MW 130] Over 0.505 [12.83] 0.008 [0.20] 0.008 [0.20]
A
Out-of-round is the difference between maximum and minimum diameters of the wire, measured at the same transverse cross section.
7.1.1 When plain wire is ordered by size number, the relation between size number, diameter, and area shown in Tables 1 and 2
shall apply.
7.1.2 Specimens for mechanical properties testing shall be full wire sections and shall be obtained from ends of wire coils as
drawn. The specimens shall be of sufficient length to perform testing described in Test Methods A370.
7.1.3 If any test specimen exhibits obvious isolated imperfections not representative of the product, it shall be discarded and
another specimen substituted.
7.1.4 Tension Test:
7.1.4.1 When tested as described in Test Methods and Definitions A370, the material, except as specified in 7.1.4.2 shall conform
to the tensile property requirements in Table 5, based on the nominal area of the wire.
7.1.4.2 When required by the purchaser, the yield strength shall be determined as described in Test Methods and Definitions A370
at an extension of 0.5 % of gage length or by the offset method (0.2 %). For determining the yield strength use a Class B-1
extensometer as described in Practice E83.
7.1.4.3 For wire to be used in the manufacture of welded wire reinforcement, the tensile and yield strength properties shall
conform to the requirements given in Table 6, based on the nominal area of the wire.
7.1.4.4 Materials Yield strength shall be measured at extension under load and shall not be required to exhibit a definite yield point
as evidenced by a distinct arrest or halt in the load indication gauge of the tensile testing machine prior to reaching ultimate tensile
load. The purchaser shall have the option to accept this feature as sufficient evidence of compliance with the specified minimum
yield strength tests covered in this specification.
7.1.5 Bend Test—The bend test specimen shall be bent at room temperature through 90º without cracking on the outside of the
bent portion visible to a person with normal or corrected vision, as prescribed in Table 3.
7.1.6 Reduction of Area—Shall be determined as described in Test Methods and Definitions A370. The wire shall conform to the
reduction of area requirements in Tables 5 and 6.
7.1.7 Permissible Variation in Wire Diameter:
7.1.7.1 The permissible variation in wire diameter shall conform to the requirements in Table 4.
7.1.7.2 The difference between the maximum and minimum diameters, as measured on any given cross section of the wire, shall
not exceed the tolerances listed in Table 4 for the given wire size.
7.2 General Requirements for Deformed Wire:
7.2.1 When deformed wire is ordered by size number, the relation between size number, diameter, and area shown in Tables 7 and
8 shall apply.
7.2.2 Specimens for mechanical properties testing shall be full wire sections and shall be obtained from ends of wire coils as
rolled. The specimens shall be of sufficient length to perform testing described in Test Methods A370.
A1022/A1022M − 22a
TABLE 5 Tension Test Requirements—Plain Wire
Grade 70 [485] Grade 72.5 [500] Grade 75 [515] Grade 77.5 [533] Grade 80[550]
Tensile strength, min, psi [MPa] 80 000 [550] 82 500 [568] 85 000 [585] 87 500 [603] 90 000 [620]
Yield strength, min, psi [MPa] 70 000 [485] 72 500 [500] 75 000 [515] 77 500 [533] 80 000 [550]
A A A A A
Reduction of area, min, % 30 30 30 30 30
A
For material testing over 100 000 psi [690 MPa] tensile strength, the reduction of area shall be not less than 25 %.
TABLE 6 Tension Test Requirements—Plain Wire for Welded Reinforcement
Size W 1.2 [MW 8] and Larger
Grade 65 [450] Grade 70 [485] Grade 72.5 [500] Grade 75 [515] Grade 77.5 [533] Grade 80 [550]
Tensile strength, min, psi [MPa] 75 000 [515] 80 000 [550] 82 500 [568] 85 000 [585] 87 500 [603] 90 000 [620]
Yield strength, min, psi [MPa] 65 000 [450] 70 000 [485] 72 500 [500] 75 000 [515] 77 500 [533] 80 000 [550]
A A A A A A
Reduction of area, min, % 30 30 30 30 30 30
Smaller than Size W 1.2 [MW 8]
Grade 56 [385]
Tensile strength, min, psi [MPa] 70 000 [485]
Yield strength, min, psi [MPa] 56 000 [385]
A
Reduction of area, min, % 30
A
For material testing over 100 000 psi [690 MPa] tensile strength, the reduction of area shall be not less than 25 %.
TABLE 7 Dimensional Requirements for Deformed Wire for Concrete Reinforcement in SI Units
Nominal Dimensions Deformation Requirements
Minimum Average
Deformed Unit Mass, Diameter, Cross-Sectional
D [in X 100] Height of
A,B,C D 2E
Wire Size kg/m mm Area, mm
F,G
Deformations, mm
MD 25 [D 3.9] 0.1962 5.60 25 0.25
MD 30 [D 4.6] 0.2355 6.20 30 0.28
MD 35 [D 5.4] 0.2747 6.70 35 0.30
MD 40 [D 6.2] 0.3140 7.10 40 0.32
MD 45 [D 7.0] 0.3532 7.60 45 0.34
MD 50 [D 7.7] 0.3925 8.00 50 0.36
MD 55 [D 8.5] 0.4317 8.40 55 0.38
MD 60 [D 9.3] 0.4709 8.70 60 0.39
MD 65 [D 10.1] 0.5102 9.10 65 0.46
MD 70 [D 10.8] 0.5494 9.40 70 0.47
MD 80 [D 12.4] 0.6279 10.10 80 0.50
MD 90 [D 13.9] 0.7065 10.70 90 0.54
MD 100 [D 15.5] 0.7849 11.30 100 0.57
MD 120 [D 18.6] 0.9419 12.40 120 0.62
MD 130 [D 20.1] 1.0204 12.90 130 0.64
MD 200 [D 31.0] 1.5700 15.95 200 0.80
MD 290 [D 45.0] 2.2700 19.22 290 0.96
A
The number following the prefix indicates the nominal cross-sectional area of the deformed wire in square millimetres.
B
For sizes other than those shown above, the Size Number shall be the number of square millimetres in the nominal area of the deformed wire cross section, prefixed
by the letters MD.
C
These sizes represent the most readily available sizes in the welded wire reinforcement industry. Other wire sizes are available and many manufacturers can produce
them in 1 mm increments.
D
The nominal diameter of a deformed wire is equivalent to the diameter of a plain wire having the same mass per metre as the deformed wire.
E -6
The cross-sectional area is based on the nominal diameter. The area in square millimetres may be calculated by dividing the unit mass in kg/mm by 7.849 × 10 (mass
of 1 mm of steel) or by dividing the unit mass in kg/m by 0.007849 (mass of steel 1 mm square and 1 m long).
F
Measurements shall be made as described in 7.2.4.7.
G
See 7.2.4.6 for average longitudinal number of deformations per unit length.
7.2.3 If any test specimen exhibits obvious isolated imperfections not representative of the product, it shall be discarded and
another specimen substituted.
7.2.4 Deformation Criteria:
7.2.4.1 Deformations shall be spaced along the wire at a substantially uniform distance and shall be symmetrically
disposeddispersed around the perimeter. The deformations on all longitudinal lines of the wire shall be similar in size and shape.
A minimum of 25 % of the total surface area shall be deformed by measurable deformations.
7.2.4.2 Deformed wire shall have two or more lines of deformations.
A1022/A1022M − 22a
TABLE 8 Dimensional Requirements for Deformed Wire for Concrete Reinforcement in in.-lb Units
Nominal Dimensions Deformation Requirements
Minimum Average
Deformed Unit Weight, Diameter, Cross-Sectional
Height of
A,B,C D E
Wire Size lb/ft in. Area, in.
F,G
Deformations, in.
D 1 0.034 0.113 0.01 0.0045
D 2 0.068 0.159 0.02 0.0063
D 3 0.102 0.195 0.03 0.0078
D 4 0.136 0.225 0.04 0.0101
D 5 0.170 0.252 0.05 0.0113
D 6 0.204 0.276 0.06 0.0124
D 7 0.238 0.299 0.07 0.0134
D 8 0.272 0.319 0.08 0.0143
D 9 0.306 0.338 0.09 0.0152
D 10 0.340 0.356 0.10 0.0160
D 11 0.374 0.374 0.11 0.0187
D 12 0.408 0.390 0.12 0.0195
D 13 0.442 0.406 0.13 0.0203
D 14 0.476 0.422 0.14 0.0211
D 15 0.510 0.437 0.15 0.0218
D 16 0.544 0.451 0.16 0.0225
D 17 0.578 0.465 0.17 0.0232
D 18 0.612 0.478 0.18 0.0239
D 19 0.646 0.491 0.19 0.0245
D 20 0.680 0.504 0.20 0.0252
D 21 0.714 0.517 0.21 0.0259
D 22 0.748 0.529 0.22 0.0265
D 23 0.782 0.541 0.23 0.0271
D 24 0.816 0.553 0.24 0.0277
D 25 0.850 0.564 0.25 0.0282
D 26 0.884 0.575 0.26 0.0288
D 27 0.918 0.586 0.27 0.0293
D 28 0.952 0.597 0.28 0.0299
D 29 0.986 0.608 0.29 0.0304
D 30 1.020 0.618 0.30 0.0309
D 31 1.054 0.628 0.31 0.0314
D 45 1.530 0.757 0.45 0.0379
A
The number following the prefix indicates the nominal cross-sectional area of the deformed wire in square inches multiplied by 100.
B
For sizes other than those shown above, the Size Number shall be the number of one hundredths of a square inch in the nominal area of the deformed wire cross section,
prefixed by the D.
C
These sizes represent the most readily available sizes in the welded wire reinforcement industry. Other wire sizes are available and many manufacturers can produce
them in 0.0015-in. increments.
D
The nominal diameter of a deformed wire is equivalent to the diameter of a plain wire having the same weight per foot as the deformed wire.
E 3
The cross-sectional area is based on the nominal diameter. The area in square inches may be calculated by dividing the weight in pounds by 0.2833 (weight of 1 in.
of steel) or by dividing the weight per linear foot of specimen in pounds by 3.4 (weight of steel 1 in. square and 1 foot long).
F
Measurements shall be made as described in 7.2.4.7.
G
See 7.2.4.6 for average longitudinal number of deformations per unit length.
7.2.4.3 The average longitudinal spacing of deformations shall be not less than 3.5 nor more than 5.5 deformations per 1 in. [25
m
...