41Cr4
1.7035Medium-carbon chromium steel with good hardenability. Standard grade for induction-hardened and nitrided components. Used for crankshafts, gears, axle shafts, bolts, studs, and machine parts requiring surface hardening.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 5140 | G51400 | REF |
| 🇪🇺 | EN | Europe | 41Cr4 | 1.7035 | 100% |
| 🇪🇺 | DIN | Europe | 41Cr4 / CK40 | — | 98% |
| 🇯🇵 | JIS | Japan | SCr440 | — | 93% |
| 🇨🇳 | GB | China | 40Cr | — | 93% |
Sources: ASTM A29, EN 10083-3:2006, DIN 17200, JIS G4104, GB/T 3077
Mechanical properties
Compatibility verdict
41Cr4 and 41Cr4 / CK40: 98% composition match
Related materials
42CrMo4
1.7225High-strength quenched and tempered chromium-molybdenum steel. Widely used for shafts, gears, crankshafts, connecting rods, and high-strength bolts. Excellent hardenability and good fatigue resistance.
34CrNiMo6
1.6582High-strength quenched and tempered Cr-Ni-Mo steel. Excellent hardenability and toughness, suitable for large cross-sections. Used for heavy-duty shafts, gears, turbine parts, and aerospace components.
16MnCr5
1.7131Low-carbon case-hardening steel with manganese and chromium. Excellent for carburizing to produce a hard, wear-resistant surface with a tough core. Standard choice for gears, camshafts, piston pins, and transmission components.
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