🇺🇸 USA equivalent of
42CrMoS41.7227
AISI 4140 (S-version)REF
Standard: AISI · Source: ASTM A29
No exact US designation — 4140 with resulfurized variant
Other international equivalents
| Country | Standard | Grade | Match | |
|---|---|---|---|---|
| 🇪🇺 | Europe | EN | 42CrMoS4 | 100% |
| 🇪🇺 | Europe | EN | 42CrMo4 (base grade) | 95% |