Astm A 694

Designation: A 694/A 694M – 00

An American National Standard

Standard Specification for

Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings,
Valves, and Parts for High-Pressure Transmission Service1
This standard is issued under the fixed designation A 694/A 694M; 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.

TABLE 1 Tensile Requirements

1. Scope
1.1 This specification covers forged or rolled steel pipe
flanges, forged fittings, valves, and parts suitable for use with
high-strength transmission-service pipe.Included are flanges,
fittings, and similar parts ordered either to dimensions specified
by the purchaser or to ASME dimensional standards referenced
in Section 2.
1.2 Several grades of material, based on minimum yield
strength requirements, are covered, as indicated in Table 1.
1.3 Supplementary Requirements are provided. Supplementary Requirement S 1 is provided for use when purchaser
approvalis required for repair welding.
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 inch-pound units or SI units
are to be regarded separately as standard. Within the text, the
SI units areshown in brackets. The values stated in each
system are not exact equivalents; therefore, each system must
be used independently of the other. Combining values from the
two systems may result in nonconformance with the specification.

Grade

F42
F46
F48
F50
F52
F56
F60
F65
F70

Yield Strength (0.2 %
Offset), min, ksi [MPa]
42
46
48
50
52
56
60
65
70

[290]
[315]
[330][345]
[360]
[385]
[415]
[450]
[485]

Tensile Strength,
min, ksi [MPa]
60
60
62
64
66
68
75
77
82

[415]
[415]
[425]
[440]
[455]
[470]
[515]
[530]
[565]

Elongation in 2
in. or 50 mm,
min %
20
20
20
20
20
20
20
20
18

A 788 Specification for Steel Forgings, General Requirements3
A 961 Specification for Common Requirements for Steel
Flanges, Forged Fittings,Valves, and Parts for Piping
Applications2
2.3 ASME Standards:
ASME B 16.5 Steel Pipe Flanges and Flanged Fittings4
ASME B 16.9 Steel Butt-Welding Fittings4
ASME B 16.10 Face-to-Face and End-to-End Dimensions
of Ferrous Valves4
ASME B 16.11 Forged Steel Fittings, Socket Welding and
Threaded4
ASME B 16.28 Wrought Steel Butt-Welding Short Radius
Elbows4
ASME B 16.47 Large Diameter SteelFlanges4
B and PV Code Section IX, Welding Qualifications4
2.4 MSS Standards:5
MSS SP-44 Standard for Steel Pipe Line Flanges
MSS SP-75 Specification for High-Test Welding Fittings
MSS SP-95 Swage (d) Nipples and Bull Plugs
MSS SP-97 Integrally Reinforced Forged Branch Outlet
Fittings
2.5 API Standard:
5L Specification for Line Pipe6

2. Referenced Documents
2.1 In addition to thosereference documents listed in
Specification A 961, the following list of standards apply to
this specification:
2.2 ASTM Standards:
A 53/A 53M Specification for Pipe, Steel, Black and HotDipped, Zinc-Coated, Welded and Seamless2
A 106 Specification for Seamless Carbon Steel Pipe for
High-Temperature Service2
A 381 Specification for Metal-Arc-Welded Steel Pipe for
Use with High-Pressure TransmissionSystems2
A 707/A 707M Specification for Forged Carbon and Alloy
Steel Flanges for Low-Temperature Service2

3

Annual Book of ASTM Standards, Vol 01.05.
Available from American Society of Mechanical Engineers, Three Park
Avenue, New York, NY 10016-5990.
5
Available from the Manufacturers’ Standardization Society of the Valve and
Fittings Industry, 127 Park St., Northeast, Vienna, VA...