ASTM A694 is the Standard Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service, it covers several grades of material: F42, F46, F48, F50, F52, F56, F60, F65, F70.
Heat treatment of ASTM A694 carbon steel and high-strength low-alloy steel may consist of normalizing, normalizing-and-tempering, or quenching and tempering. The tempering temperature shall be at least 1000 °F [540 °C].
ASTM A694 carbon steel Chemical Composition
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C max.
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0.30
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Mn max.
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0.60
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P max
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0.025
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S max
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0.025
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Si
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0.15-0.35
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ASTM A694 Mechanical Property
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Grade Symbol
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Tensile Strength, min, ksi［Mpa］
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Yield Strength, min, ksi［Mpa］
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Elongation in 2 in.［50mm］or 4D, min, %
|
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F42
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60［415］
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42［290］
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20
|
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F46
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60［415］
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46［315］
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20
|
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F48
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62［425］
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48［330］
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20
|
|
F50
|
64［440］
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50［345］
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20
|
|
F52
|
66［455］
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52［360］
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20
|
|
F56
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68［470］
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56［385］
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20
|
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F60
|
75［515］
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60［415］
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20
|
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F65
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77［530］
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65［450］
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20
|
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F70
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82［565］
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70［485］
|
18
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ASTM A694 Carbon steel FLANGES SPECIFICATION
Specifications : ASTM A694
Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, Custom Drawings
Size : 1/8″ – 48″
Pressure Ratings :150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
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