A 694/A 694M: American Society for Testing and Materials
Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service
Scope: This specification covers forged or rolled steel pipe flanges, forged fittings, valves, and parts suitable for use with high-strength transmission-service pipe.

Chemical Composition
Composition, %
	Heat Analysis	Product Analysis
Carbon, max	0.26	0.265
Manganese, max	1.6	1.64
Phosphorus, max	0.025	0.03
Sulfur, max	0.025	0.03
Silicon	0.15–0.35	0.10–0.40

Mechanical Properties
Identification Symbol	Yield Strength(0.2% offset), min,ksi [MPa]	Tensile Strength, min, ksi [MPa]	Elongation in 2 in. or 50 mm,min%
F42	42 [290]	60 [415]	20
F46	46 [315]	60 [415]	20
F48	48 [330]	62 [425]	20
F50	50 [345]	64 [440]	20
F52	52 [360]	66 [455]	20
F56	56 [385]	68 [470]	20
F60	60 [415]	75 [515]	20
F65	65 [450]	77 [530]	20
F70	70 [485]	82 [565]	18

1.1This 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 or MSS dimensional standards referenced in Section 2.
1.2Several grades of material, based on minimum yield strength requirements, are covered, as indicated in Table 1.
1.3Supplementary Requirements are provided. Supplementary Requirement S 1 is provided for use when purchaser approval is required for repair welding.