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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 4340 | G43400 | REF |
| 🇪🇺 | EN | Europe | 34CrNiMo6 | 1.6582 | 100% |
| 🇨🇳 | GB | China | 34CrNiMo6 | — | 95% |
| 🇬🇧 | BS | United Kingdom | 817M40 / EN24 | — | 93% |
| 🇯🇵 | JIS | Japan | SNCM439 | — | 88% |
Sources: ASTM A29, EN 10083-3:2006, GB/T 3077, BS 970, JIS G4103
Mechanical properties — Pro
QT
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Hardness HRC | ||
| Elastic Modulus | ||
| Density |
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51CrMoV4
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