SATM 4140 corresponding grades: German42CrMo4, China42CrMo。
SATM 4140 is a chromium molybdenum alloy steel widely used as a universal high-strength steel for manufacturing shafts, shafts, bolts, gears, and other components.
| Standard | Grade | C | Mn | P | S | Si | Cr | Mo |
| ASTM A29 | 4140 | 0.38-0.43 | 0.75-1.00 | 0.035 | 0.040 | 0.15-0.35 | 0.8-1.10 | 0.15-0.25 |
| EN 10083/EN 10250 | 42CrMo4/1.7225 | 0.38-0.45 | 0.6-0.9 | 0.035 | 0.035 | 0.4 | 0.9-1.2 | 0.15-0.30 |
| GB/T3077-2015 | 42CrMo | 0.38-0.45 | 0.5-0.8 | 0.035 | 0.035 | 0.17-0.37 | 0.9-1.2 | 0.15-0.30 |
