| AISI 3140, Low alloy steel (Ni – Cr Alloyed) | Equivalent Grades |
|---|---|
| UNS number | G31400 |
| US name | ASTM A519 |
| EN name | 40NiCr6, BS S148, 640M40, EN111 |
| EN number | 1.5711, 1.5710 |
| Japanese name | SNC 236 to JIS G4053 |
Tradenames of AISI 3140, Low alloy steel (Ni – Cr Alloyed): HOFORS KN-14, KRUPP 40 NICR 6
| Standards with similar compositions: |
|---|
| JIS G4052(79) SNC631H (Japan) |
| STAS 791(80) 41CrNi12 (Romania) |
| GOST 4543(71) 40ChN (Russian Federation) |
| ASTM A519(96) 3140 (USA) |
| SAE J775(93) 3140 (USA) |
| SAE J775(93) NV4 (USA) |
| AISI 3140 (USA) |
• China:
40CrNi to GB/T 17107, 40CrNi to GB/T 3077, 40CrNi to GB/T 3078
• India:
35Ni1Cr60 to IS 4368, 35Ni5Cr2 to IS 11169/1, 35Ni5Cr2 to IS 13352, 35Ni5Cr2 to IS 1570/4, 35Ni5Cr2 to IS 3930, 35Ni5Cr2 to IS 4367, 35Ni5Cr2 to IS 9175/24, 46Ni5Cr2 to IS 3445
• Japan:
SNC 236 to JIS G4053
• Romania:
40CrNi12 to STAS 791, 40CrNi12S to STAS 791, 40CrNi12X to STAS 791, 40CrNi12XS to STAS 791, 41CrNi12 to STAS 791
• Russia:
40KHN to GOST 4543, 45KHN to GOST 4543, 45KHN to GOST 8479
• South Korea:
SNC 236 to KS D 3708
• USA:
3135, 3140, 3140 to ASTM A519, 3145, G31400 to SAE J775, NV4 to SAE J775, UNS G31400, UNS K22033, X3140
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