ASTM A105/A105M-24
(Specification)Standard Specification for Carbon Steel Forgings for Piping Applications
Standard Specification for Carbon Steel Forgings for Piping Applications
ABSTRACT
This specification covers standards for forged carbon steel piping components, that is, flanges, fittings, valves, and similar parts, for use in pressure systems at ambient and higher-temperature service conditions. Materials shall be subjected to heat treatment (annealing, normalizing, tempering, or quenching). Material shall conform to carbon, manganese, phosphorus, sulfur, silicon, copper, nickel, chromium, molybdenum and vanadium contents. The forgings shall be subjected to tension, hardness and hydrostatic tests, with the latter applicable when required. Material shall adhere to tensile strength, yield strength, elongation, reduction of area, and hardness requirements. Guidelines for retreatment, repair by welding, and product marking are given.
SCOPE
1.1 This specification2 covers forged carbon steel piping components for ambient- and higher-temperature service in pressure systems. Included are flanges, fittings, valves, and similar parts ordered either to dimensions specified by the purchaser or to dimensional standards such as the MSS, ASME, and API specifications referenced in Section 2. Forgings made to this specification are limited to a maximum weight of 10 000 lb [4540 kg]. Larger forgings may be ordered to Specification A266/A266M. Tubesheets and hollow cylindrical forgings for pressure vessel shells are not included within the scope of this specification. Although this specification covers some piping components machined from rolled bar and seamless tubular products (see 5.2), it does not cover raw material produced in these product forms.
1.2 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order.
1.3 Specification A266/A266M covers other steel forgings and Specifications A675/A675M and A696 cover other steel bars.
1.4 This specification is expressed in both inch-pound units and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units. 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.
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.
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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: A105/A105M − 24 Endorsed by
Manufacturers Standardization Society
of the Valve and Fittings Industry
Used in USDOE-NE Standards
Standard Specification for
1
Carbon Steel Forgings for Piping Applications
This standard is issued under the fixed designation A105/A105M; 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 U.S. Department of Defense.
1. Scope* Combining values from the two systems may result in non-
2 conformance with the standard.
1.1 This specification covers forged carbon steel piping
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
components for ambient- and higher-temperature service in
been substituted in this standard for such traditional terms as “nominal
pressure systems. Included are flanges, fittings, valves, and
diameter,” “size,” and “nominal size.”
similar parts ordered either to dimensions specified by the
1.5 This international standard was developed in accor-
purchaser or to dimensional standards such as the MSS,
dance with internationally recognized principles on standard-
ASME, and API specifications referenced in Section 2. Forg-
ization established in the Decision on Principles for the
ings made to this specification are limited to a maximum
Development of International Standards, Guides and Recom-
weight of 10 000 lb [4540 kg]. Larger forgings may be ordered
mendations issued by the World Trade Organization Technical
to Specification A266/A266M. Tubesheets and hollow cylin-
Barriers to Trade (TBT) Committee.
drical forgings for pressure vessel shells are not included
within the scope of this specification. Although this specifica-
2. Referenced Documents
tion covers some piping components machined from rolled bar
2.1 In addition to those reference documents listed in
and seamless tubular products (see 5.2), it does not cover raw
Specification A961/A961M, the following list of standards
material produced in these product forms.
apply to this specification:
1.2 Supplementary requirements are provided for use when
3
2.2 ASTM Standards:
additional testing or inspection is desired. These shall apply
A266/A266M Specification for Carbon Steel Forgings for
only when specified individually by the purchaser in the order.
Pressure Vessel Components
1.3 Specification A266/A266M covers other steel forgings
A675/A675M Specification for Steel Bars, Carbon, Hot-
and Specifications A675/A675M and A696 cover other steel
Wrought, Special Quality, Mechanical Properties
bars.
A696 Specification for Steel Bars, Carbon, Hot-Wrought or
Cold-Finished, Special Quality, for Pressure Piping Com-
1.4 This specification is expressed in both inch-pound units
ponents
and SI units. However, unless the order specifies the applicable
A788/A788M Specification for Steel Forgings, General Re-
“M” specification designation (SI units), the material shall be
quirements
furnished to inch-pound units. The values stated in either SI
A961/A961M Specification for Common Requirements for
units or inch-pound units are to be regarded separately as
Steel Flanges, Forged Fittings, Valves, and Parts for
standard. Within the text, the SI units are shown in brackets.
Piping Applications
The values stated in each system may not be exact equivalents;
therefore, each system shall be used independently of the other.
2.3 MSS Standards:
4
SP 44 Standard for Steel Pipe Line Flanges
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
3
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Materials for Piping and Special Purpose Applications. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved April 15, 2024. Published April 2024. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1926. Last previous edition approved in 2023 as A105/A105M – 23. the ASTM website.
4
DOI: 10.1520/A0105_A0105M-24. Available from Manufacturers Standardization Society of the Valve and Fittings
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-
cation SA-105 in Section II of that Code. hq.com.
*A Summary of Changes section appears at the
...
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: A105/A105M − 23 A105/A105M − 24 Endorsed by
Manufacturers Standardization Society
of the Valve and Fittings Industry
Used in USDOE-NE Standards
Standard Specification for
1
Carbon Steel Forgings for Piping Applications
This standard is issued under the fixed designation A105/A105M; 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 U.S. Department of Defense.
1. Scope*
2
1.1 This specification covers forged carbon steel piping components for ambient- and higher-temperature service in pressure
systems. Included are flanges, fittings, valves, and similar parts ordered either to dimensions specified by the purchaser or to
dimensional standards such as the MSS, ASME, and API specifications referenced in Section 2. Forgings made to this specification
are limited to a maximum weight of 10 000 lb [4540 kg]. Larger forgings may be ordered to Specification A266/A266M.
Tubesheets and hollow cylindrical forgings for pressure vessel shells are not included within the scope of this specification.
Although this specification covers some piping components machined from rolled bar and seamless tubular products (see 5.2), it
does not cover raw material produced in these product forms.
1.2 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when
specified individually by the purchaser in the order.
1.3 Specification A266/A266M covers other steel forgings and Specifications A675/A675M and A696 cover other steel bars.
1.4 This specification is expressed in both inch-pound units and SI units. However, unless the order specifies the applicable “M”
specification designation (SI units), the material shall be furnished to inch-pound units. 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.
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.
2. Referenced Documents
2.1 In addition to those reference documents listed in Specification A961/A961M, the following list of standards apply to this
specification:
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 May 1, 2023April 15, 2024. Published May 2023April 2024. Originally approved in 1926. Last previous edition approved in 20212023 as
A105/A105M – 21.A105/A105M – 23. DOI: 10.1520/A0105_A0105M-23.10.1520/A0105_A0105M-24.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-105 in Section II of that Code.
*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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A105/A105M − 24
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2.2 ASTM Standards:
A266/A266M Specification for Carbon Steel Forgings for Pressure Vessel Components
A675/A675M Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties
A696 Specification for Steel Bars, Carbon, Hot-Wrought or Cold-Finished, Special Quality, for Pressure Piping Components
A788/A788M Specification for Steel Forgings, General Requirements
A961/A961M Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping
Applications
2.3 MSS Standards:
4
SP 44 Standard for Steel Pipe Line Flanges
2.4 ASME Stan
...
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