ASTM A270-02
(Specification)Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
SCOPE
1.1 This specification covers grades of seamless and welded austenitic stainless steel sanitary tubing intended for use in the dairy and food industry and having special surface finishes. Pharmaceutical quality may be requested, as a supplementary requirement.
1.2 This specification covers tubes in sizes up to and including 12 in. (304.8 mm) in outside diameter.
1.3 The values stated in inch-pound units are to be regarded as the standard.
1.4 Optional supplementary requirements are provided, and when one or more of these are desired, each shall be so stated in the order.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: A 270 – 02
Standard Specification for
Seamless and Welded Austenitic Stainless Steel Sanitary
1
Tubing
This standard is issued under the fixed designation A 270; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * SAE J1086 Practice for Numbering Metals and Alloys
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(UNS)
1.1 This specification covers grades of seamless and welded
austenitic stainless steel sanitary tubing intended for use in the
3. Terminology
dairy and food industry and having special surface finishes.
3.1 Definition:
Pharmaceutical quality may be requested, as a supplementary
3.1.1 roughness average, Ra, n—arithmetic average surface
requirement.
roughness normally reported in microinches or microns; a
1.2 This specification covers tubes in sizes up to and
measurement of surface roughness usually performed by mov-
including 12 in. (304.8 mm) in outside diameter.
ing a stylus in a straight line along the surface, although other
1.3 The values stated in inch-pound units are to be regarded
methods may be used.
as the standard.
1.4 Optional supplementary requirements are provided, and
4. Ordering Information
when one or more of these are desired, each shall be so stated
4.1 Orders for material under this specification should
in the order.
include the following, as required, to describe the desired
material adequately:
2. Referenced Documents
4.1.1 Quantity (feet, metres, or number of lengths),
2.1 ASTM Standards:
4.1.2 Name of material (seamless or welded tubes),
A 262 Practices for Detecting Susceptibility to Intergranu-
2
4.1.3 Size (outside diameter and average wall thickness),
lar Attack in Austenitic Stainless Steels
4.1.4 Length (specific or random),
A 1016/A 1016M Specification for General Requirements
4.1.5 Surface finish (Section 14),
for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stain-
3 4.1.6 Optional requirements (product analysis, see Section
less Steel Tubes
9; hydrostatic or nondestructive electric test, see Section11).
A 480/A 480M Specification for General Requirements for
4.1.7 Test report required (Certification Section of Specifi-
Flat Rolled Stainless and Heat-Resisting Steel Plate, Sheet,
2
cation A 1016/A 1016M),
and Strip
4.1.8 Specification designation,
A 967 Specification for Chemical Passivation Treatments
2 4.1.9 Special requirements, and
for Stainless Steel Parts
3 4.2 Any supplementary requirements.
E 527 Practice for Numbering Metals and Alloys (UNS)
2.2 ASME Standard:
5. General Requirements
B46.1 Surface Texture (Surface Roughness, Waviness, and
4 5.1 Material furnished under this specification shall con-
Lay)
form to the applicable requirements of the current edition of
2.3 Other Standard:
Specification A 1016/A 1016M, unless otherwise provided
herein.
6. Manufacture
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys, and is the direct responsibility of Subcommittee
6.1 The tubes shall be made by the seamless or welded
A01.10 on Stainless and Alloy Steel Tubular Products.
process.
Current edition approved April 10, 2002. Published May 2002. Originally
6.2 At the manufacturer’s option, tubing may be furnished
published as A 270 – 44 T. Last previous edition A 270 – 01.
2
Annual Book of ASTM Standards, Vol 01.03. either hot finished or cold finished.
3
Annual Book of ASTM Standards, Vol 01.01.
4
Available from ASME International, Three Park Avenue, New York, NY
10016–5990.
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Available from Society of Automotive Engineers, 400 Commmonwealth Drive,
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 discontinued.
Contact ASTM International (www.astm.org) for the latest information.
A 270
7. Heat Treatment 12. Permissible Variations in Dimensions
7.1 All material shall be furnished in the heat-treated
12.1 The following variations in dimensions shall apply,
condition. The heat treatment procedure, except for N08926 unless pharmaceutical tubing (Supplementary Requirement
and N08367, shall consist of heating the material to a minimum
S2) is specified. When S2 is specified, the dimensions of Table
temperature of 1900°F (1040°C) and quenching in water or S2.3 shall apply.
rapid cooling by other means.
12.1.1 Variations in outside diam
...
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