ASTM A632-02

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Please
contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: A 632 – 02
Standard Specification for
Seamless and Welded Austenitic Stainless Steel Tubing
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(Small-Diameter) for General Service
This standard is issued under the fixed designation A632; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* SAE J1086 Practice for Numbering Metals and Alloys
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(UNS)
1.1 This specification covers grades of stainless steel tubing
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insizesunder ⁄2downto0.050in.(12.7to1.27mm)inoutside
3. Terminology
diameterandwallthicknesseslessthan0.065in.downto0.005
3.1 Definitions—For definitions of terms used in this speci-
in. (1.65 to 0.13 mm) for general corrosion-resisting and low-
fication, refer to Terminology A941.
or high-temperature service, as designated in Table 1.
4. Ordering Information
NOTE 1—The grades of austenitic stainless steel tubing furnished in
accordance with this specification have been found suitable for low-
4.1 Orders for material under this specification should
temperature service down to −325°F (−200°C) in which Charpy notched-
include the following, as required, to describe the desired
bar impact values of 15 ft·lbf (20 J), minimum, are required and these
material adequately:
grades need not be impact tested.
4.1.1 Quantity (feet or number of lengths),
1.2 Optional supplementary requirements are provided and,
4.1.2 Name of material (seamless or welded tubes),
when desired, shall be so stated in the order.
4.1.3 Grade (see Table 1),
1.3 The values stated in inch-pound units are to be regarded
4.1.4 Size (only two of the following: outside diameter,
as the standard.
inside diameter, and average wall),
4.1.5 Length (specific or random),
2. Referenced Documents
4.1.6 Optionalrequirements(checkanalysis,seeSection15;
2.1 ASTM Standards:
hydrostatic or nondestructive electric test, see Section 16),
A262 Practices for Detecting Susceptibility to Intergranu-
4.1.7 Test report required,
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lar Attack in Austenitic Stainless Steels
4.1.8 Specification designation, and
A370 TestMethodsandDefinitionsforMechanicalTesting
4.1.9 Special requirements or any supplementary require-
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of Steel Products
ments selected, or both.
A 751 Test Methods, Practices, and Terminology for
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Chemical Analysis of Steel Products
5. Manufacture
A941 Terminology Relating to Steel, Stainless Steel, Re-
5.1 Manufacture—Thetubesshallbecoldfinishedandshall
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lated Alloys, and Ferroalloys
be made by the seamless or welded process.
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E165 Test Method for Liquid Penetrant Examination
5.2 Heat Treatment—All material shall be furnished in the
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E527 Practice for Numbering Metals and Alloys (UNS)
heat-treated condition. The heat-treatment procedure shall
2.2 SAE Standard:
consist of heating the material to a minimum temperature of
1800°F (980°C) and quenching in water or rapidly cooling by
other means.
6. Chemical Composition
6.1 The steel shall conform to the requirements as to
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This specification is under the jurisdiction ofASTM CommitteeA01 on Steel,
chemical composition as specified in Table 1.
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
A01.10 on Stainless and Alloy Steel Tubular Products.
Current edition approved March 10, 2002. Published June 2002. Originally
published as A632 – 69. Last previous edition A632 – 01.
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Annual Book of ASTM Standards, Vol 01.03.
3
Annual Book of ASTM Standards, Vols 01.03.
4 6
Annual Book of ASTM Standards, Vol 01.01. Available from Society of Automotive Engineers, 400 Commonwealth Drive,
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Annual Book of ASTM Standards, Vol 03.03. Warrendale, PA 15096.
*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.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Please
contact ASTM International (www.astm.org) for the latest information.
A632–02
TABLE 1 Chemical Requirements
Composition, %
Grade TP 304 TP 304L TP 310 TP 316 TP 316L TP 317 TP 321 TP 347 TP 348
Element
UNS
S30400 S30403 S31000 S31600 S31603 S31700 S32100 S34700 S34800
A
Designation
Carbon, max 0.08 0.030 0.15 0.08 0.030 0.08 0.08 0.08 0.08
Manganese max 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00
Phosphorus, max 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045
Sulfur, max 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030
B
Silicon, max 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75
C
Nickel 8.0–11.0 8.0–13.0 19.0–22.0 11.0–14.0 10.0–15.0 11.0–14.0 9.0–13.0 9.0–13.0 9.0–13.0
Chromium 18.0
...