PRODUCT | GRADE | EQUIVALENT STANDARD | CHEMICAL COMPOSITION (%) | SUPPLY CONDITION | APPLICATION | TYPE OF APPLICATION | ||||||||||
AISI | DIN | JIS | C | Si | Mn | Cr | Mo | Ni | V | W | Oth. | |||||
High Tensile Steel | ||||||||||||||||
1.7225 | 4140 | 42CrMo4 | SCM440H | 0.38-0.45 | 0.10-0.40 | 0.6-0.9 | 0.9-1.2 | 0.15-0.3 | – | – | – | P/0.035, S/0.035 | Pre-Hardened 28-33 HRC | High tensile composed of Cr-Mo-Mn suitable for spare parts, machinery parts such as drive shafts, crankshaft, connecting rod, bushing gears | ||
1.6582 | 4340 | 34CrNiMo6 | SNCM439, (SNCM8) | 0.30-0.38 | 0.4 | 0.5-0.8 | 1.3-1.7 | 0.15-0.3 | 1.3-1.7 | – | – | P/0.035, S/0.030 | Pre-Hardened 25-30 HRC | Low-alloyed composed of Cr-Mo suitable for spare parts to support high stress, such as drive shaft, crankshaft, connecting rod, bushing gear |