ASTM A270/A270M-10
(Specification)Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
ABSTRACT
This specification covers grades of seamless, welded, and heavily cold worked austenitic and ferritic/austenitic stainless steel sanitary tubing. Seamless tubes shall be manufactured by a process that does not involve welding at any stage. Welded tubes shall be made using an automated welding process with no addition of filler metal during the welding process. Heavily cold worked tubes shall be made by applying cold working of not less than 35% reduction of thickness of both wall and weld to a welded tube prior to the final anneal. No filler shall be used in making the weld. All material shall be furnished in the heat-treated condition. A chemical analysis of either one length of flat-rolled stock or one tube shall be made for each heat. Each tube shall be subjected to mechanical tests like reverse flattening test, hydrostatic test or nondestructive electric test. The following surface finishes may be specified: mill finish, mechanically polished surface finish, finish No. 80, finish No. 120, finish No. 180, finish No. 240, electropolished finish, and maximum roughness average surface finish. Longitudinally polished finish shall be performed on the inside surface only while a circumferential polished finish shall be done on either the inside surface, outside surface, or both.
SCOPE
1.1 This specification covers grades of seamless, welded, and heavily cold worked welded austenitic and ferritic/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. [300 mm] in outside diameter.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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.
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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Designation:A270/A270M −10
StandardSpecification for
Seamless and Welded Austenitic and Ferritic/Austenitic
1
Stainless Steel Sanitary Tubing
This standard is issued under the fixed designationA270/A270M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* A1016/A1016M Specification for General Requirements for
Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
1.1 This specification covers grades of seamless, welded,
Steel Tubes
and heavily cold worked welded austenitic and ferritic/
E527 Practice for Numbering Metals and Alloys in the
austenitic stainless steel sanitary tubing intended for use in the
Unified Numbering System (UNS)
dairy and food industry and having special surface finishes.
2.2 ASME Standard:
Pharmaceutical quality may be requested, as a supplementary
B46.1 Surface Texture (Surface Roughness, Waviness, and
requirement.
3
Lay)
1.2 This specification covers tubes in sizes up to and
2.3 ASME Boiler and Pressure Vessel Code:
3
including 12 in. [300 mm] in outside diameter.
Section VIII Pressure Vessels
1.3 The values stated in either SI units or inch-pound units 2.4 Other Standard:
SAE J1086 Practice for Numbering Metals and Alloys
are to be regarded separately as standard. The values stated in
4
each system may not be exact equivalents; therefore, each (UNS)
system shall be used independently of the other. Combining
3. Terminology
values from the two systems may result in non-conformance
with the standard. 3.1 Definitions:
3.1.1 roughness average, Ra, n—arithmetic average surface
1.4 Optional supplementary requirements are provided, and
roughness normally reported in microinches or microns; a
when one or more of these are desired, each shall be so stated
measurement of surface roughness usually performed by mov-
in the order.
ing a stylus in a straight line along the surface, although other
methods may be used.
2. Referenced Documents
2
2.1 ASTM Standards:
4. Ordering Information
A262 Practices for Detecting Susceptibility to Intergranular
4.1 It is the responsibility of the purchaser to specify all
Attack in Austenitic Stainless Steels
requirements that are necessary for material ordered under this
A480/A480M Specification for General Requirements for
specification. Such requirements may include, but are not
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
limited to, the following:
Sheet, and Strip
4.1.1 Quantity (feet, metres, or number of lengths),
A923 Test Methods for Detecting Detrimental Intermetallic
4.1.2 Name of material (austenitic steel tube),
Phase in Duplex Austenitic/Ferritic Stainless Steels
4.1.3 Process seamless (SML), welded (WLD), or heavily
A967 Specification for Chemical Passivation Treatments for
cold worked (HCW),
Stainless Steel Parts
4.1.4 Size (outside diameter and average wall thickness),
4.1.5 Length (specific or random),
4.1.6 Surface finish (Section 13),
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
4.1.7 Optional requirements (product analysis, see Section
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.10 on Stainless and Alloy Steel Tubular Products . 9; hydrostatic or nondestructive electric test, see Section 11).
Current edition approved April 1, 2010. Published May 2010. Originally
´1
approved in 1944. Last previous edition approved in 2008 as A270–03a(2008) .
3
DOI: 10.1520/A0270-10. Available from American Society of Mechanical Engineers (ASME), ASME
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.asme.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from Society of Automotive Engineers (SAE), 400 Commonwealth
the ASTM website. Dr., Warrendale, PA 15096-0001, http://www.sae.org.
*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
1
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A270/A270M−10
4.1.8 Test report required (Certification Section of Specifi- 9. Product Analysis
cation A1016/A1016M),
9.1 When requested by the purchaser, product analysis
4.1.9 Specification designation,
tolerance in Specification A480/A480M shall apply. The prod-
4.1.10 Special requirements, and
uctanalysistoleranceisnotapplicabletothecarboncontentfo
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
´1
Designation:A270–03a (Reapproved 2008) Designation: A270/A270M – 10
Standard Specification for
Seamless and Welded Austenitic and Ferritic/Austenitic
1
Stainless Steel Sanitary Tubing
This standard is issued under the fixed designationA270/A270M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1
´ NOTE—The units statement in 1.3 was corrected editorially in October 2008.
1. Scope*
1.1 This specification covers grades of seamless, welded, and heavily cold worked welded austenitic and ferritic/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.
1.2This specification covers tubes in sizes up to and including 12 in. (304.8 mm) in outside diameter.
1.3The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.2 This specification covers tubes in sizes up to and including 12 in. [300 mm] in outside diameter.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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.
1.4 Optional supplementary requirements are provided, and when one or more of these are desired, each shall be so stated in
the order.
2. Referenced Documents
2
2.1 ASTM Standards:
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A923 Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels
A967 Specification for Chemical Passivation Treatments for Stainless Steel Parts
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel
Tubes
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.2 ASME Standard:
3
B46.1 Surface Texture (Surface Roughness, Waviness, and Lay)
2.3 ASME Boiler and Pressure Vessel Code:
3
Section VIII Pressure Vessels
2.4 Other Standard:
4
SAE J1086 Practice for Numbering Metals and Alloys (UNS)
3. Terminology
3.1 Definition:
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.10
on Stainless and Alloy Steel Tubular Products .
Current edition approved Oct. 1, 2008. Published January 2009. Originally approved in 1944. Last previous edition approved in 2003 as A270–03a. DOI:
10.1520/A0270-03AR08E01.
´1
Current edition approved April 1, 2010. Published May 2010. Originally approved in 1944. Last previous edition approved in 2008 as A270–03a(2008) . DOI:
10.1520/A0270-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
3
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
4
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.org.
*ASummary 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.
1
---------------------- Page: 1 ----------------------
A270/A270M – 10
3.1.1 roughness average, Ra, n—arithmetic average surface roughness normally reported in microinches or microns; a
measurement of surface roughness usually performed by moving a stylus in a straight line along the surface, although other
methods may be used.
4. Ordering Information
4.1 It is the responsibility of the purchaser to specify all requirements that are
...
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