ASTM A632-98

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: A 632 – 98 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
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 A 632; 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.
1. Scope include the following, as required, to describe the desired
material adequately:
1.1 This specification covers grades of stainless steel tubing
3.1.1 Quantity (feet or number of lengths),
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in sizes under ⁄2 down to 0.050 in. (12.7 to 1.27 mm) in outside
3.1.2 Name of material (seamless or welded tubes),
diameter and wall thicknesses less than 0.065 in. down to 0.005
3.1.3 Grade (see Table 1),
in. (1.65 to 0.13 mm) for general corrosion-resisting and low-
3.1.4 Size (only two of the following: outside diameter,
or high-temperature service, as designated in Table 1.
inside diameter, and average wall),
NOTE 1—The grades of austenitic stainless steel tubing furnished in
3.1.5 Length (specific or random),
accordance with this specification have been found suitable for low-
3.1.6 Optional requirements (check analysis, Section 14;
temperature service down to −325°F (−200°C) in which Charpy notched-
pressure or nondestructive test, Section 15 or 16; or Supple-
bar impact values of 15 ft·lbf (20 J), minimum, are required and these
mentary Requirements),
grades need not be impact tested.
3.1.7 Test report required,
1.2 Optional supplementary requirements are provided and,
3.1.8 Specification designation, and
when desired, shall be so stated in the order.
3.1.9 Additional requirements.
1.3 The values stated in inch-pound units are to be regarded
as the standard.
4. Manufacture
4.1 Manufacture—The tubes shall be cold finished and shall
2. Referenced Documents
be made by the seamless or welded process.
2.1 ASTM Standards:
4.2 Heat Treatment—All material shall be furnished in the
A 262 Practices for Detecting Susceptibility to Intergranu-
heat-treated condition. The heat-treatment procedure shall
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lar Attack in Austenitic Stainless Steels
consist of heating the material to a minimum temperature of
A 370 Test Methods and Definitions for Mechanical Testing
1800°F (980°C) and quenching in water or rapidly cooling by
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of Steel Products
other means.
E 59 Practice of Sampling Steel and Iron for Determination
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of Chemical Composition
5. Chemical Composition
E 165 Test Method for Liquid Penetrant Inspection
5.1 The steel shall conform to the requirements as to
5
Method
chemical composition as specified in Table 1.
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E 527 Practice for Numbering Metals and Alloys (UNS)
2.2 SAE Standard:
6. Product Analysis
SAE J 1086 Practice for Numbering Metals and Alloys
6.1 When specified on the purchase order, an analysis of
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(UNS)
either one billet or one length of flat-rolled stock or one tube
shall be made from each heat. Samples for chemical analysis,
3. Ordering Information
except spectrochemical analysis, shall be taken in accordance
3.1 Orders for material under this specification should
with Practice E 59. The chemical composition thus determined
shall conform to the requirements specified.
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This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
6.2 If the analysis made in accordance with 6.1 does not
Stainless Steel, and Related Alloys, and is the direct responsibility of Subcommittee
conform to the requirements specified, an analysis of each
A01.10 on Stainless and Alloy Steel Tubular Products.
billet or length of flat-rolled stock or tube from the same heat
Current edition approved Sept. 10, 1998. Published March 1999. Originally
published as A 632 – 69. Last previous edition A 632 – 90.
may be made and all billets, stock, or tubes thus conforming to
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Annual Book of ASTM Standards, Vol 01.03.
the requirements shall be accepted so far as chemical compo-
3
Annual Book of ASTM Standards, Vols 01.01, 01.02, 01.03, 01.04, and 01.05.
4 sition is concerned.
Discontinued; see 1996 Annual Book of ASTM Standards, Vol 03.05.
5
Annual Book of ASTM Standards, Vol 03.03.
6
7. Mechanical Properties
Annual Book of ASTM Standards, Vol 01.01.
7
Available from Society of Automotive Engineeres, 400 Commonwealth Drive,
7.1 Tensile Requirements—The material shall conform to
Warrendale, PA 15096.
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A 632
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
S30
...