ASTM B366/B366M-23
(Specification)Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings
Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings
ABSTRACT
This specification covers wrought welding fittings, including threaded fittings, for pressure piping, factory-made from nickel and nickel alloys. The term welding applies to butt-welding or socket-welding parts such as elbows, bends, caps, tees, reducers, lap-joint, and stub ends. This specification does not apply to cast welding fittings. Grades of nickel and nickel alloys included in this specification are designated with a prefix, WP or CR, based on dimensional and rating standards. WP grades have class designations (Class S, Class W, Class WX, and Class WU) to indicate whether seamless or welded construction is utilized and to indicate the nondestructive test method and extent of nondestructive examination (such as radiography and/or ultrasonic test). The material for wrought welding fittings may consist of forgings, rods, bars, plates, sheets, and seamless or welded pipe that conform to all the specified requirements. Forging or shaping operations may be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, or fusion welding, or by a combination of two or more of these operations. Chemical and product analyses shall conform to the chemical composition prescribed. Requirements for tensile properties, heat treatment, tension test, and dimensions are detailed. Hydrostatic testing of wrought fittings is not required by this specification.
SCOPE
1.1 This specification covers wrought welding fittings for pressure piping, factory-made from nickel and nickel alloys. Threaded fittings as covered in ASME B16.11 are also covered by this specification. The term welding applies to butt-welding or socket-welding parts such as 45° and 90° elbows, 180° bends, caps, tees, reducers, lap-joint stub ends, and other types, as covered by ASME B16.9, ASME B16.11, MSS SP-43, MSS SP-95, and MSS SP-97.
1.1.1 Several grades of nickel and nickel alloys are included in this specification. Grades are designated with a prefix, WP or CR, based on the applicable ASME or MSS dimensional and rating standards.
1.1.2 Class WP fittings are those manufactured to the requirements of ASME B16.9, B16.11.
1.1.3 For each of the WP nickel and nickel alloy grades, several classes of fittings are covered to indicate whether seamless or welded construction was utilized. Class designations are also utilized to indicate the nondestructive test method and extent of nondestructive examination (NDE). Table 1 is general summary of the fitting classes applicable to all WP grades of nickel and nickel alloys covered by this specification. There are no classes for the CR grades. Specific requirements are covered elsewhere.
1.2 This specification does not apply to cast welding fittings.
1.3 Optional supplementary requirements are provided for fittings where a greater degree of examination is desired. These supplementary requirements call for additional tests. When desired, one or more of these may be specified in the order.
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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.
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 Inter...
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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.
Designation: B366/B366M − 23
Standard Specification for
1
Factory-Made Wrought Nickel and Nickel Alloy Fittings
This standard is issued under the fixed designation B366/B366M; 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 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This specification covers wrought welding fittings for
responsibility of the user of this standard to become familiar
pressure piping, factory-made from nickel and nickel alloys.
with all hazards including those identified in the appropriate
Threaded fittings as covered in ASME B16.11 are also covered
Safety Data Sheet (SDS) for this product/material as provided
by this specification. The term welding applies to butt-welding
by the manufacturer, to establish appropriate safety, health,
or socket-welding parts such as 45° and 90° elbows, 180°
and environmental practices, and determine the applicability
bends, caps, tees, reducers, lap-joint stub ends, and other types,
of regulatory limitations prior to use.
as covered by ASME B16.9, ASME B16.11, MSS SP-43, MSS
1.6 This international standard was developed in accor-
SP-95, and MSS SP-97.
dance with internationally recognized principles on standard-
1.1.1 Several grades of nickel and nickel alloys are included
ization established in the Decision on Principles for the
in this specification. Grades are designated with a prefix, WP or
Development of International Standards, Guides and Recom-
CR, based on the applicable ASME or MSS dimensional and
mendations issued by the World Trade Organization Technical
rating standards.
Barriers to Trade (TBT) Committee.
1.1.2 Class WP fittings are those manufactured to the
requirements of ASME B16.9, B16.11.
2. Referenced Documents
1.1.3 For each of the WP nickel and nickel alloy grades,
2
2.1 ASTM Standards:
several classes of fittings are covered to indicate whether
B127 Specification for Nickel-Copper Alloy Plate, Sheet,
seamless or welded construction was utilized. Class designa-
and Strip
tions are also utilized to indicate the nondestructive test method
B160 Specification for Nickel Rod and Bar
and extent of nondestructive examination (NDE). Table 1 is
B161 Specification for Nickel Seamless Pipe and Tube
general summary of the fitting classes applicable to all WP
B162 Specification for Nickel Plate, Sheet, and Strip
grades of nickel and nickel alloys covered by this specification.
B163 Specification for Seamless Nickel and Nickel Alloy
There are no classes for the CR grades. Specific requirements
Condenser and Heat-Exchanger Tubes
are covered elsewhere.
B164 Specification for Nickel-Copper Alloy Rod, Bar, and
1.2 This specification does not apply to cast welding fit-
Wire
tings.
B165 Specification for Nickel-Copper Alloy Seamless Pipe
1.3 Optional supplementary requirements are provided for
and Tube
fittings where a greater degree of examination is desired. These
B166 Specification for Nickel-Chromium-Aluminum Alloy,
supplementary requirements call for additional tests. When
Nickel-Chromium-Iron Alloys, Nickel-Chromium-Cobalt-
desired, one or more of these may be specified in the order.
Molybdenum Alloy, Nickel-Iron-Chromium-Tungsten
Alloy, and Nickel-Chromium-Molybdenum-Copper Alloy
1.4 The values stated in either SI units or inch-pound units
Rod, Bar, and Wire
are to be regarded separately as standard. The values stated in
B167 Specification for Standard Specification for Nickel-
each system are not necessarily exact equivalents; therefore, to
Chromium-Aluminum Alloys (UNS N06699) Nickel-
ensure conformance with the standard, each system shall be
Chromium-Iron Alloys (UNS N06600, N06601, N06603,
used independently of the other, and values from the two
N06690, N06693, N06025, N06045, and N06696) Nickel-
systems shall not be combined.
Chromium-Cobalt-Molybdenum Alloy (UNS N06617)
Nickel-Iron-Chromium-Tungsten Alloy (UNS N06674)
1
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
2
B02.07 on Refined Nickel and Cobalt and Their Alloys. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2023. Published April 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1961. Last previous edition approved in 2020 as B366/B366M – 20. Standards volume
...
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: B366/B366M − 20 B366/B366M − 23
Standard Specification for
1
Factory-Made Wrought Nickel and Nickel Alloy Fittings
This standard is issued under the fixed designation B366/B366M; 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 wrought welding fittings for pressure piping, factory-made from nickel and nickel alloys. Threaded
fittings as covered in ASME B16.11 are also covered by this specification. The term welding applies to butt-welding or
socket-welding parts such as 45° and 90° elbows, 180° bends, caps, tees, reducers, lap-joint stub ends, and other types, as covered
by ASME B16.9, ASME B16.11, MSS SP-43, MSS SP-95, and MSS SP-97.
1.1.1 Several grades of nickel and nickel alloys are included in this specification. Grades are designated with a prefix, WP or CR,
based on the applicable ASME or MSS dimensional and rating standards.
1.1.2 Class WP fittings are those manufactured to the requirements of ASME B16.9, B16.11.
1.1.3 For each of the WP nickel and nickel alloy grades, several classes of fittings are covered to indicate whether seamless or
welded construction was utilized. Class designations are also utilized to indicate the nondestructive test method and extent of
nondestructive examination (NDE). Table 1 is general summary of the fitting classes applicable to all WP grades of nickel and
nickel alloys covered by this specification. There are no classes for the CR grades. Specific requirements are covered elsewhere.
1.2 This specification does not apply to cast welding fittings.
1.3 Optional supplementary requirements are provided for fittings where a greater degree of examination is desired. These
supplementary requirements call for additional tests. When desired, one or more of these may be specified in the order.
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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet
(SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental
practices, and determine the applicability of regulatory limitations prior to use.
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 B02 on Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B02.07 on Refined
Nickel and Cobalt and Their Alloys.
Current edition approved Oct. 1, 2020April 1, 2023. Published October 2020April 2023. Originally approved in 1961. Last previous edition approved in 20192020 as
B366/B366M – 19.B366/B366M – 20. DOI: 10.1520/B0366_B0366M-20.10.1520/B0366_B0366M-23.
*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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B366/B366M − 23
TABLE 1 Fitting Classes for WP Grades
Class Construction Nondestructive Examination
S Seamless None
W Welded Radiography or Ultrasonic
WX Welded Radiography
WU Welded Ultrasonic
2. Referenced Documents
2
2.1 ASTM Standards:
B127 Specification for Nickel-Copper Alloy Plate, Sheet, and Strip
B160 Specification for Nickel Rod and Bar
B161 Specification for Nickel Seamless Pipe and Tube
B162 Specification for Nickel Plate, Sheet, and Strip
B163 Specification for Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes
B164 Specification for Nickel-Copper Alloy Rod, Bar, and Wire
B165 Specification for Nickel-Copper Alloy Seamless Pipe and Tube
B166 Specification for Nicke
...
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