ASTM A815/A815M-22

Standard Specification for Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings

ABSTRACT
This specification covers two general classes, WP and CR, of wrought ferritic, ferritic/austenitic, and martensitic stainless steel fittings of seamless and welded construction. Class WP fittings are subdivided into four subclasses: Classes WP-S, WP-W, WP-WX, and WP-WU. The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products. The steel shall be melted by electric furnace, vacuum furnace, or electric furnace followed by vacuum or electroslag-consumable remelting. Forging or shaping operations shall be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining or by combination of two or more of these operations. The materials shall undergo heat treatment and shall follow the required cooling process and tempering temperature. Chemical and product analyses shall be performed and shall conform to the required chemical composition in carbon, manganese, phosphorus, silicon, sulfur, nickel, chromium, molybdenum, copper, nitrogen, and titanium. The mechanical properties of the fitting material shall conform to the required values in yield strength, tensile strength, elongation, and hardness.
SCOPE
1.1 This specification covers two general classes, WP and CR, of wrought ferritic, ferritic/austenitic, and martensitic stainless steel fittings of seamless and welded construction covered by the latest revision of Specification A960/A960M. Fittings differing from these standards may be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M.  
1.1.1 Class WP fittings are subdivided into four subclasses: Classes WP-S, WP-W, WP-WX, and WP-WU. They are manufactured to the requirements of Specification A960/A960M, and they shall have pressure ratings compatible with 13.2. Class WP-S fittings are those manufactured from seamless product by a seamless method of manufacture (marked with class symbol WP-S); Class WP-W fittings are those which contain welds where the fitting fabrication or construction welds have been radiographed (marked with class symbol WP-W); and Class WP-WX fittings are those which contain welds where all welds have been radiographed (marked with class symbol WP-WX); and Class WP-WU fittings are those which contain welds where all welds have been ultrasonically tested (marked with class symbol WP-WU).  
1.1.2 Class CR fittings are those manufactured to the requirements of MSS SP-43, and they shall have pressure ratings compatible with 13.3.  
1.2 This specification does not apply to cast fittings.  
1.3 Optional supplementary requirements are provided. When desired, one or more of these may be specified in the order.  
1.4 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable “M” specification designation [SI units], the material shall be furnished to inch-pound units.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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.  
1.6 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.

General Information

• Status: Historical
• Publication Date: 31-Oct-2022
• ICS: 23.040.40 - Metal fittings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.22 - Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications

Standards Content (Sample)

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: A815/A815M − 22
Standard Specification for
Wrought Ferritic, Ferritic/Austenitic, and Martensitic
1
Stainless Steel Piping Fittings
This standard is issued under the fixed designation A815/A815M; 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.
1. Scope* 1.5 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. Within the text, the
1.1 This specification covers two general classes, WP and
SI units are shown in brackets. The values stated in each
CR, of wrought ferritic, ferritic/austenitic, and martensitic
system may not be exact equivalents; therefore, each system
stainless steel fittings of seamless and welded construction
shall be used independently of the other. Combining values
covered by the latest revision of Specification A960/A960M.
from the two systems may result in non-conformance with the
Fittings differing from these standards may be furnished in
standard.
accordance with Supplementary Requirement S58 of Specifi-
cation A960/A960M.
1.6 This international standard was developed in accor-
1.1.1 Class WP fittings are subdivided into four subclasses:
dance with internationally recognized principles on standard-
Classes WP-S, WP-W, WP-WX, and WP-WU. They are
ization established in the Decision on Principles for the
manufactured to the requirements of Specification A960/
Development of International Standards, Guides and Recom-
A960M, and they shall have pressure ratings compatible with
mendations issued by the World Trade Organization Technical
13.2. Class WP-S fittings are those manufactured from seam-
Barriers to Trade (TBT) Committee.
less product by a seamless method of manufacture (marked
with class symbol WP-S); Class WP-W fittings are those which
2. Referenced Documents
contain welds where the fitting fabrication or construction
2
2.1 ASTM Standards:
welds have been radiographed (marked with class symbol
A262 Practices for Detecting Susceptibility to Intergranular
WP-W); and Class WP-WX fittings are those which contain
Attack in Austenitic Stainless Steels
welds where all welds have been radiographed (marked with
A388/A388M Practice for Ultrasonic Examination of Steel
class symbol WP-WX); and Class WP-WU fittings are those
Forgings
which contain welds where all welds have been ultrasonically
A751 Test Methods and Practices for Chemical Analysis of
tested (marked with class symbol WP-WU).
Steel Products
1.1.2 Class CR fittings are those manufactured to the
A763 Practices for Detecting Susceptibility to Intergranular
requirements of MSS SP-43, and they shall have pressure
Attack in Ferritic Stainless Steels
ratings compatible with 13.3.
A923 Test Methods for Detecting Detrimental Intermetallic
1.2 This specification does not apply to cast fittings.
Phase in Duplex Austenitic/Ferritic Stainless Steels
1.3 Optional supplementary requirements are provided. A960/A960M Specification for Common Requirements for
When desired, one or more of these may be specified in the Wrought Steel Piping Fittings
order.
E165/E165M Practice for Liquid Penetrant Testing for Gen-
eral Industry
1.4 This specification is expressed in both inch-pound units
3
and in SI units. However, unless the order specifies the 2.2 ASME Standards:
applicable “M” specification designation [SI units], the mate- B16.9 Factory-Made Wrought Butt-Welding Fittings
rial shall be furnished to inch-pound units. B16.11 Forged Fittings, Socket-Welding and Threaded
1 2
This specification is under the jurisdiction of ASTM Committee A01 on Steel, For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Standards volume information, refer to the standard’s Document Summary page on
Materials for Piping and Special Purpose Applications. the ASTM website.
3
Current edition approved Nov. 1, 2022. Published December 2022. Originally Available from American Society of Mechanical Engineers (ASME), ASME
approved in 1983. Last previous edition approved in 2021 as A815/A815M – 21. International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
DOI: 10.1520/A0815_A0815M-22. www.asme.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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A815/A
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
Designation: A815/A815M − 21 A815/A815M − 22
Standard Specification for
Wrought Ferritic, Ferritic/Austenitic, and Martensitic
1
Stainless Steel Piping Fittings
This standard is issued under the fixed designation A815/A815M; 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.
1. Scope*
1.1 This specification covers two general classes, WP and CR, of wrought ferritic, ferritic/austenitic, and martensitic stainless steel
fittings of seamless and welded construction covered by the latest revision of Specification A960/A960M. Fittings differing from
these standards may be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M.
1.1.1 Class WP fittings are subdivided into four subclasses: Classes WP-S, WP-W, WP-WX, and WP-WU. They are manufactured
to the requirements of Specification A960/A960M, and they shall have pressure ratings compatible with 13.2. Class WP-S fittings
are those manufactured from seamless product by a seamless method of manufacture (marked with class symbol WP-S); Class
WP-W fittings are those which contain welds where the fitting fabrication or construction welds have been radiographed (marked
with class symbol WP-W); and Class WP-WX fittings are those which contain welds where all welds have been radiographed
(marked with class symbol WP-WX); and Class WP-WU fittings are those which contain welds where all welds have been
ultrasonically tested (marked with class symbol WP-WU).
1.1.2 Class CR fittings are those manufactured to the requirements of MSS SP-43, and they shall have pressure ratings compatible
with 13.3.
1.2 This specification does not apply to cast fittings.
1.3 Optional supplementary requirements are provided. When desired, one or more of these may be specified in the order.
1.4 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable “M”
specification designation [SI units], the material shall be furnished to inch-pound units.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units
are shown in brackets. 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.
1.6 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.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved Nov. 1, 2021Nov. 1, 2022. Published November 2021December 2022. Originally approved in 1983. Last previous edition approved in 20202021
as A815/A815M – 20.A815/A815M – 21. DOI: 10.1520/A0815_A0815M-21.10.1520/A0815_A0815M-22.
*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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A815/A815M − 22
2. Referenced Documents
2
2.1 ASTM Standards:
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A388/A388M Practice for Ultrasonic Examination of Steel Forgings
A751 Test Methods and Practices for Chemical Analysis of Steel Products
A763 Practices for Detecting Susceptibility to Intergranular Attack in Ferritic Stainless Steels
A923 Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels
A960/A960M Specification for Common Requirements for Wrought Steel Piping Fittings
E165/E165M Practice for Liquid Penetrant Testing for General Industry
3
2.2 ASME Standards:
B16.9 Factory-Made Wrought Butt-Welding Fittings
B16.11 Forged Fittings, Socket-Welding and Threaded
4
2.3 MSS Standards:
MSS SP-43 Standard Practice for Light Weight Stai
...