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ASTM A949/A949M-01(2019)

Current Revision

Standard Specification for Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe (Withdrawn 2024)

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1.1 This specification covers spray-formed seamless ferritic/austenitic stainless steel pipe intended for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.

1.2 Optional supplementary requirements are provided for pipe where a greater degree of testing is desired. These supplementary requirements call for additional tests to be made and when desired, one or more of these may be specified in the order.

1.3 Appendix X1 of this specification lists the dimensions of seamless stainless steel pipe as shown in ANSI B 36.19. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.

1.4 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.

1.4.1 Within the text, the SI units are shown in brackets.

1.4.2 The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

Note 1: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


This specification covers spray-formed seamless ferritic/austenitic stainless steel pipe intended for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures. The steel shall be made by the electric-furnace process and the pipe shall be made by the spray forming process using the melt from the primary melting. The as spray formed tubes shall be machined on both the inner and outer surfaces. All pipes shall be furnished in the heat-treated and descaled conditions. These pipes shall be free of contaminating iron particles. The specimens shall undergo transverse or longitudinal tension test, flattening test and hydrostatic test.


SDO ASTM: ASTM International
Document Number A949
Publication Date March 1, 2019
Language en - English
Page Count 5
Revision Level 01(2019)
Supercedes
Committee A01.10
Publish Date Document Id Type View
March 1, 2019 A0949_A0949M-01R19 Revision
March 10, 2001 A0949_A0949M-01 Revision
March 10, 2001 A0949_A0949M-00A Revision
March 1, 2014 A0949_A0949M-01R14 Reaffirmation
Oct. 1, 2009 A0949_A0949M-01R09 Reaffirmation
Sept. 1, 2005 A0949_A0949M-01R05 Reaffirmation