ASTM B473-96(2002)e1

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e1
Designation: B 473 – 96 (Reapproved 2002)
Standard Specification for
UNS N08020, UNS N08024, and UNS N08026 Nickel Alloy
Bar and Wire
This standard is issued under the fixed designation B 473; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Paragraph 1.3 was added editorially in June 2002.
1. Scope 3.1.2 bars, n—hot-finished rounds, squares, octagons, and
2 hexagons: ⁄4 in. (6.35 mm) and over in diameter or size.
1.1 This specification covers UNS N08020, UNS N08026,
1 1
Hot-finished flats: ⁄4 to 10 in. (254 mm), inclusive, in width, ⁄8
and UNS N08024 bar and wire other than required for
in. (3.175 mm) and over in thickness. Cold-finished rounds,
reforging.
squares, octagons, hexagons, and shapes: over ⁄2 in. (12.7 mm)
1.2 The values stated in inch-pound units are to be regarded
in diameter or size. Cold-finished flats: ⁄8 in. (9.525 mm) and
as the standard. The values given in parentheses are for
over in width (see Discussion(1)), ⁄8 in. and over in thickness
information only.
(see Discussion(2)).
1.3 This standard does not purport to address all of the
3.1.2.1 Discussion—(1) Widths less than ⁄8 in. (9.525 mm)
safety concerns, if any, associated with its use. It is the
and thicknesses less than ⁄16 in. (4.75 mm) are generally
responsibility of the user of this standard to become familiar
described as flat wire.
with all hazards including those identified in the appropriate
3.1.2.2 Discussion—(2) Thicknesses ⁄8 in. (3.175 mm) to
Material Safety Data Sheet for this product/material as pro-
under ⁄16 in. (4.75 mm) can be cold-rolled strip as well as bar.
vided by the manufacturer, to establish appropriate safety and
3.1.3 wire, n—cold finished only: round, square, octagon,
health practices, and determine the applicability of regulatory
hexagon, and shape wire, ⁄2 in. (12.7 mm) and under in
limitations prior to use.
diameter or size. Cold-finished only: flat wire, ⁄16 in. (4.76
2. Referenced Documents
mm) to under ⁄8 in. (9.525 mm) in width, 0.010 in. (0.254 mm)
to under ⁄16 in. in thickness.
2.1 ASTM Standards:
A 262 Practices for Detecting Susceptibility to Intergranu-
4. Ordering Information
lar Attack in Austenitic Stainless Steels
4.1 It is the responsibility of the purchaser to specify all
E 8 Test Methods forTensionTesting of Metallic Materials
requirements that are necessary for the safe and satisfactory
E 1473 Test Methods for Chemical Analysis of Nickel,
performance of material ordered under this specification.
Cobalt, and High-Temperature Alloys
Examples of such requirements include, but are not limited to,
3. Terminology
the following:
4.1.1 Quantity (weight or number of pieces),
3.1 Definitions of Terms Specific to This Standard:
4.1.2 Name of material or UNS number,
3.1.1 The terms bar and wire as used in this specification are
4.1.3 Form (bar or wire),
described as follows:
4.1.4 Dimensions,
4.1.5 Condition,
4.1.6 Finish,
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
4.1.7 ASTM designation and year of issue,
B02.07 on Refined Nickel and Cobalt and Their Alloys.
4.1.8 Inspection (15.1),
Current edition approved May 10, 1996. Published June 1996. Originally
4.1.9 Supplementary requirements, if any, and
published as B 473 – 68. Last previous edition B 473 – 95.
For ASME Boiler and Pressure Vessel Code applications see related Specifi- 4.1.10 If possible, the intended end use.
cation SB-473 in Section II of that Code.
NOTE 1—A typical ordering description is as follows: 200 bars, UNS
Annual Book of ASTM Standards, Vol 01.03.
N08020, 1 in. (25.4 mm) round by 10 to 14 ft (3.0 to 3.6 m), centerless
Annual Book of ASTM Standards, Vol 03.01.
Annual Book of ASTM Standards, Vol 03.05. ground, Specification B 473.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
B 473
TABLE 2 Product Analysis Tolerances
5. Materials and Manufacture
Tolerances Over the Maximum Limit or
5.1 Heat Treatment—The product of UNS N08020 alloy
Under the Minimum Limit
shall be furnished in the stabilized-annealed condition. The
Elements
UNS UNS UNS
product of UNS N08026 alloy shall be furnished in the
N08026 N08020 N08024
solution-annealed condition. The product of UNS N08024
Carbon 0.005 0.01 0.005
alloy shall be furnished in the annealed condition.
Manganese 0.03 0.04 0.03
Phosphorus 0.005 0.005 0.005
NOTE 2—The recommended annealing temperatures all followed by
Sulfur 0.005 0.005 0.005
quenching in water or rapidly cooling by other means are as follows: 1700
Silicon 0.05 0.05 0.05
to 1850°F (927 to 1010°C) for UNS N08020, 2050 to 2200°F (1121 to
Chromium 0.25 0.25 0.25
Nickel 0.30 0.30 0.30
1204°C)forUNSN08026,and1925to1975°F(1052to1079°C)forUNS
Molybdenum 0.10 0.10 0.10
N08024.
Columbium (Nb) + tantalum . 0.05 0.05
Copper 0.10 0.10 0.10
6. Chemical Composition
Nitrogen 0.01 . .
6.1 The material shall conform to the requirements as to
chemical composition prescribed in Table 1.
6.2 If a product (check) analysis is performed by the
purchaser, the material shall conform to the product (check)
11.1.2 A lot for mechanical properties shall consist of all
analysis variations prescribed in Table 2.
material from the same heat, nominal diameter or thickness, of
each heat-treatment charge.
7. Condition
11.2 Test Material Selection:
7.1 Bars shall be furnished annealed and either hot finished
11.2.1 Chemical Analysis—Representative samples shall be
or cold finished. Strain-hardened material is available only as
taken during pouring or subsequent processing.
cold finished.
11.2.1.1 Check analysis shall be wholly the responsibility
7.2 Wire will be furnished only as annealed and cold
of the purchaser.
finished.
11.2.2 Mechanical Properties—Samples of the material to
provide test specimens shall be taken from such locations in
8. Mechanical Properties
each lot as to be representative of that lot.
8.1 The material shall conform to the applicable require-
ments as to mechanical properties prescribed in Table 3.
12. Number of Tests
9. Dimensions and Permissible Variations
12.1 Chemical Analysis—One test per lot.
9.1 Bar—Bars shall conform to the variations in dimensions 12.2 Mechanical Properties—One test per lot.
prescribed in Tables 4-12, inclusive, as applicable.
9.2 Wire—Wire shall conform to the permissible variations
13. Specimen Preparation
in dimensions prescribed in Tables 13-17, inclusive, as appli-
13.1 Tension test specimens shall be taken from the material
cable.
after final heat treatment, and shall be selected in the longitu-
dinal direction.The tension test specimens shall conform to the
10. Workmanship, Finish, and Appearance
appropriate sections of Test Methods E 8.
10.1 The product shall be uniform in quality and condition,
smooth, commercially straight or flat, and free of injurious
14. Test Methods
imperfections.
14.1 The chemical composition and mechanical properties
11. Sampling
of the material as enumerated in this specification shall, in case
11.1 Lot: of disagreement, be determined in accordance with the follow-
11.1.1 A lot for chemical analysis shall consist of one heat. ing methods:
TABLE 1 Chemical Requirements
Composition, %
Element
UNS N08026 UNS N08020 UNS N08024
Carbon, max 0.03 0.07 0.03
Manganese, max 1.00 2.00 1.00
Phosphorus, max 0.03 0.045 0.035
Sulfur, max 0.03 0.035 0.035
Silicon, max 0.50 1.00 0.50
Nickel 33.00 to 37.20 32.00 to 38.00 35.00 to 40.00
Chromium 22.00 to 26.00 19.00 to 21.00 22.50 to 25.00
Molybdenum 5.00 to 6.70 2.00 to 3.00 3.50 to 5.00
Copper 2.00 to 4.00 3.00 to 4.00 0.50 to 1.50
Columbium (Nb) + tantalum . 8 3 carbon–1.00 0.15 to 0.35
Nitrogen 0.10 to 0.16 . .
A A A
Iron remainder remainder remainder
A
By difference
B 473
A
TABLE 3 Mechanical Property Requirements
Diameter or
Tensile Strength, min Yield Strength, min
Elongation in 2 in. Reduction of area,
Condition Thickness,
(50.8 mm), min, % min, %
ksi MPa ksi MPa
in. (mm)
B
Annealed, hot finished or cold All 80 551 35 241 30.0 50.0
finished
Annealed, strain-hardened Up to 2 (50.8) incl 90 620 60 415 15.0 40.0
A
For wire only, tensile strength 90 to 120.0 ksi (620 to 830 MPa); no requirements on yield strength, elongation, and reduction of area.
B
Cold-finished shapes require only 15 %, minimum, elongation.
TABLE 4 Permissible Variations in Size of Hot-Rolled Round and Square Bars
A
Out-of-Round or
Permissible Variations from Specified Size, in. (mm)
B
Out-of-Square,
Over Under
in. (mm)
C,DE E E
1 5
⁄4 (6.35) to ⁄16 (7.94), incl
5 7 C,D
Over ⁄16 (7.94) to ⁄16 (11.11), incl 0.006 (0.15) 0.006 (0.15) 0.009 (0.23)
C,D
7 5
Over ⁄16 (11.11) to ⁄8 (15.88), incl 0.007 (0.18) 0.007 (0.18) 0.010 (0.25)
5 7
Over ⁄8 (15.88) to ⁄8 (22.22), incl 0.008 (0.20) 0.008 (0.20) 0.012 (0.30)
Over ⁄8 (22.22) to 1 (25.40), incl 0.009 (0.23) 0.009 (0.23) 0.013 (0.33)
Over 1 (25.40) to 1 ⁄8 (28.58), incl 0.010 (0.25) 0.010 (0.25) 0.015 (0.38)
1 1
Over 1 ⁄8 (28.58) to 1 ⁄4 (31.75), incl 0.011 (0.28) 0.011 (0.28) 0.016 (0.41)
1 3
Over 1 ⁄4 (31.75) to 1 ⁄8 (34.92), incl 0.012 (0.30) 0.012 (0.30) 0.018 (0.46)
3 1
Over 1 ⁄8 (34.92) to 1 ⁄2 (38.10), incl 0.014 (0.36) 0.014 (0.36) 0.021 (0.53)
1 1 1
Over 1 ⁄2 (38.10) to 2 (50.80), incl ⁄64 (0.40) ⁄64 (0.40) 0.023 (0.58)
1 1
Over 2 (50.80) to 2 ⁄2 (63.50), incl ⁄32 (0.79) 0 0.023 (0.58)
1 1 3
Over 2 ⁄2 (63.50) to 3 ⁄2 (88.90), incl ⁄64 (1.19) 0 0.035 (0.89)
1 1 1
Over 3 ⁄2 (88.90) to 4 ⁄2 (114.30), incl ⁄16 (1.59) 0 0.046 (1.17)
1 1 5
† Over 4 ⁄2 (114.30) to 5 ⁄2 (139.70), incl ⁄64 (1.98) 0 0.058 (1.47)
1 1 1
Over 5 ⁄2 (139.70) to 6 ⁄2 (165.10), incl ⁄8 (3.18) 0 0.070 (1.78)
1 5
Over 6 ⁄2 (165.10) to 8 (203.20), incl ⁄32 (3.97) 0 0.085 (2.18)
A
Out-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same cross section.
B
Out-of-square section is the difference in the two dimensions at the same cross section of a square bar, each dimension being the distance between opposite faces.
C
1 5
Size tolerances have not been evolved for rounds in the size range of ⁄4 to ⁄16 in. (6.35 to 7.94 mm), inclusive. Size tolerances have not been evolved for round sections
1 5
in the size range of ⁄4 in. to approximately ⁄8 in. (6.35 to 15.88 mm) in diameter which are produced on rod mills in coils.
D
Variations in size of coiled product made on rod mills are greater than size tolerances for product made on bar mills.
E
Squares in this size are not produced as hot-rolled products.
† Editorially corrected.
TABLE 5 Permissible Variations in Size of Hot-Rolled Hexagonal and Octagonal Bars
Maximum Difference in
Permissible Variations from Specified Size, in. (mm)
Specified Sizes Measured
3 Measurements for
Between Opposite Sides,
Hexagons
in. (mm)
Over Under
only, in. (mm)
1 1
⁄4 (6.35) to ⁄2 (12.70), incl 0.007 (0.18) 0.007 (0.18) 0.011 (0.28)
Over ⁄2 (12.70) to 1 (25.40), incl 0.010 (0.25) 0.010 (0.25) 0.015 (0.38)
Over 1 (25.40) to 1 ⁄2 (38.10), incl 0.021 (0.53) 0.021 (0.53) 0.025 (0.64)
1 1 1 1
Over 1 ⁄2 (38.10) to 2 (50.80), incl ⁄32 (0.79) ⁄32 (0.79) ⁄32 (0.79)
1 3 3 3
Over 2 (50.80) to 2 ⁄2 (63.50), incl ⁄64 (1.19) ⁄64 (1.19) ⁄64 (1.19)
1 1 1 1 1
Over 2 ⁄2 (63.50) to 3 ⁄2 (88.90), incl ⁄16 (1.59) ⁄16 (1.59) ⁄16 (1.59)
dissatisfaction with the results of the test, the producer or
Test ASTM Designations
A
Chemical analysis E 1473
supplier may make claim for a rehearing.
Tension E 8
A
Iron shall be determined arithmetically by difference.
17. Certification
15. Inspection
17.1 When specified in the purchase order or contract, a
15.1 If specified, source inspection of the material by the
producer’s or supplier’s certification shall be furnished to the
purchaser at the manufacturer’s plant shall be made as agreed
purchaser that the material was manufactured, sampled, tested,
upon between the purchaser and the manufacturer as part of the
and inspected in accordance with this specification and has
purchase contract.
been found to meet the requirements. When specified in the
purchase order or contract, a report of the test results shall be
16. Rejection and Rehearing
furnished.
16.1 Material that fails to conform to the requirements of
this specification may be rejected. Rejection should be reported
to the producer or supplier promptly and in writing. In case of
B 473
TABLE 6 Permissible Variations in Thickness and Width for Hot-Rolled Flat Bars
Permissible Variations in Thickness for Thicknesses Given, in. (mm)
1 1 1
Specified Width, in. (mm) ⁄8 (3.18) to ⁄2 (12.70), incl Over ⁄2 (12.70) to 1 (25.40), incl Over 1 (25.40) to 2 (50.80), incl
Over Under Over Under Over Under
To 1 (25.40), incl 0.008 (0.20) 0.008 (0.20) 0.010 (0.25) 0.010 (0.25) . .
Over 1 (25.40) to 2 (50.80), incl 0.012 (0.30) 0.012 (0.30) 0.015 (0.38) 0.015 (0.38) 0.031 (0.79) 0.031 (0.79)
Over 2 (50.80) to 4 (101.60), incl 0.015 (0.38) 0.015 (0.38) 0.020 (0.51) 0.020 (0.51) 0.031 (0.79) 0.031 (0.79)
Over 4 (101.60) to 6 (152.40), incl 0.015 (0.38) 0.015 (0.38) 0.020 (0.51) 0.020 (0.51) 0.031 (0.79) 0.031 (0.79)
Over 6 (152.40) to 8 (203.20), incl 0.016 (0.41) 0.016 (0.41) 0.025 (0.64) 0.025 (0.64) 0.031 (0.79) 0.031 (0.79)
Over 8 (203.20) to 10 (254.00), incl 0.021 (0.53) 0.021 (0.53) 0.031 (0.79) 0.031 (0.79) 0.031 (0.79) 0.031 (0.79)
Over 2 (50.80) to 4 (101.60), incl Over 4 (101.60) to 6 (152.40), incl Over 6 (152.40) to 8 (203.20), incl
Over Under Over Under Over Under
To 1 (25.40), incl . . . . . .
Over 1 (25.40) to 2 (50.80), incl . . . . . .
Over 2 (50.80) to 4 (101.60), incl 0.062 (1.57) 0.031 (0.79) . . . .
Over 4 (101.60) to 6 (152.40), incl 0.062 (1.57) 0.031 (0.79) 0.093 (2.36) 0.062 (1.57) . .
Over 6 (152.40) to 8 (203.20), incl 0.062 (1.57) 0.031 (0.79) 0.093 (2.36) 0.062 (1.57) 0.125 (3.18) 0.156 (3.96)
Over 8 (203.20) to 10 (154.00), incl 0.062 (1.57) 0.031 (0.79) 0.093 (2.36) 0.062 (1.57) 0.125 (3.18) 0.156 (3.96)
Permissible Variations in Width, in. (mm)
Specified Width, in. (mm)
Over Under
To 1 (25.40), incl 0.015 (0.38) 0.015 (0.38)
Over 1 (25.40) to 2 (50.80), incl 0.031 (0.79) 0.031 (0.79)
Over 2 (50.80) to 4 (101.60), incl 0.062 (1.57) 0.031 (0.79)
Over 4 (101.60) to 6 (152.40), incl 0.093 (2.36) 0.062 (1.57)
Over 6 (152.40) to 8 (203.20), incl 0.125 (3.18) 0.156 (3.96)
Over 8 (203.20) to 10 (254.00), incl 0.156 (3.96) 0.187 (4.75)
TABLE 7 Permissible Variations in Size of Cold-Finished Rou
...