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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 4140 | G41400 | REF |
| 🇪🇺 | EN | Europe | 42CrMo4 | 1.7225 | 100% |
| 🇫🇷 | AFNOR | France | 42CD4 | — | 98% |
| 🇬🇧 | BS | United Kingdom | 708M40 / EN19 | — | 97% |
| 🇯🇵 | JIS | Japan | SCM440 | — | 96% |
| 🇨🇳 | GB | China | 42CrMo | — | 93% |
Sources: ASTM A29/A29M, EN 10083-3:2006, NF EN 10083-3, BS 970, JIS G4053, GB/T 3077
Mechanical properties
Compatibility verdict
42CrMo4 and 42CD4: 98% composition match
Related materials
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.
25CrMo4
1.7218Medium-carbon chromium-molybdenum steel with good toughness and weldability. Used for seamless tubes, pressure vessels, aircraft structural parts, and automotive components. Better weldability than 42CrMo4 due to lower carbon.
Export this comparison as PDF
Professional datasheet with equivalents, composition, and properties. Ready for your QM documentation.
Download PDF — €4.90Included with PRO subscription