Designation: A 105/A 105M – 01 An American National Standard
Endorsed by
Manufacturers Standardization Society
of the Valve and Fittings Industry
Used in USDOE-NE Standards
Standard Specification for
Carbon Steel Forgings for Piping Applications
1
This standard is issued under the fixed designation A 105/A 105M; 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 (e) 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
1.1 This specification
2
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 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
A 266/A 266M. 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 4.2), 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 A 266/A 266M covers other steel forgings
and Specifications A 675, A 695, and A 696 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.
1.5 The values stated in either inch-pound units or SI are to
be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system are not
exact equivalents; therefore, each system must be used inde-
pendently of the other. Combining values from the two systems
may result in nonconformance with the specification.
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.”
2. Referenced Documents
2.1 In addition to those reference documents listed in
Specification A 961, the following list of standards apply to
this specification:
2.2 ASTM Standards:
A 266/A 266M Specification for Carbon Steel Forgings for
Pressure Vessel Components
3
A 370 Test Methods and Definitions for Mechanical Testing
of Steel Products
3
,
4
,
5
A 675/A 675M Specification for Steel Bars, Carbon, Hot-
Wrought, Special Quality, Mechanical Properties
3
A 695 Specification for Steel Bars, Carbon, Hot-Wrought,
Special Quality, for Fluid Power Applications
3
A 696 Specification for Steel Bars, Carbon, Hot-Wrought or
Cold-Finished, Special Quality, for Pressure Piping Com-
ponents
3
A 788 Specification for Steel Forgings, General Re-
quirements
3
A 961 Specification for Common Requirements for Steel
Flanges, Forged Fittings, Valves, and Parts for Piping
Applications
4
2.3 MSS Standards:
SP 44 Standard for Steel Pipe Line Flanges
6
2.4 ASME Standards:
B16.5 Dimensional Standards for Steel Pipe Flanges and
Flanged Fittings
7
B16.9 Wrought Steel Buttwelding Fittings
7
B16.10 Face-to-Face and End-to-End Dimensions of Fer-
rous Valves
7
B16.11 Forged Steel Fittings, Socket Weld, and Threaded
7
B16.34 Valves-Flanged, Threaded and Welding End
7
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 Mar. 10, 2001. Published May 2001. Originally
published as A 105 – 26 T. Last previous edition A 105/A 105M – 00.
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA-105 in Section II of that Code.
3
Annual Book of ASTM Standards, Vol 01.05.
4
Annual Book of ASTM Standards, Vol 01.01.
5
Annual Book of ASTM Standards, Vol 01.03.
6
Available from Manufacturers’ Standardization Society of the Valve and
Fittings Industry, 127 Park Street, NE Vienna, VA 22180–4602.
7
Available from ASME International, Three Park Avenue, New York, NY
10016–5990.
1
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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