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Forgings, Fasteners, Boltings, Stud Bolts, Screws, Nuts
ASTM A694 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.
Several grades of material, based on minimum yield strength requirements, are covered, as indicated in Table 1.
Supplementary Requirements are provided. Supplementary Requirement S1 is provided for use when purchaser approval is required for repair welding.
ASTM A694 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.
| Composition, % | C, max | Mn, max | P, max | S, max | Si | Cu A | Ni A | Cr A | Mo A | V A | Nb A | BA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Heat Analysis | 0.30 | 1.60 | 0.025 | 0.025 | 0.15-0.35 | . . . | . . . | . . . | . . . | . . . | . . . | . . . |
| ||||||||||||
| Grade | Yield Strength (0.2 % Offset), min, ksi [MPa] | Tensile Strength, min, ksi [MPa] | Elongation in 2 in. or 50 mm, min % |
|---|---|---|---|
| ASTM A694 Grade F42 | 42 [290] | 60 [415] | 20 |
| ASTM A694 Grade F46 | 46 [315] | 60 [415] | 20 |
| ASTM A694 Grade F48 | 48 [330] | 62 [425] | 20 |
| ASTM A694 Grade F50 | 50 [345] | 64 [440] | 20 |
| ASTM A694 Grade F52 | 52 [360] | 66 [455] | 20 |
| ASTM A694 Grade F56 | 56 [385] | 68 [470] | 20 |
| ASTM A694 Grade F60 | 60 [415] | 75 [515] | 20 |
| ASTM A694 Grade F65 | 65 [450] | 77 [530] | 20 |
| ASTM A694 Grade F70 | 70 [485] | 82 [565] | 18 |
| S1 | Special Flanges |
|---|