EN24 / 34CrNiMo6 Alloy Steel Manufacturer & Supplier
Nickel-chromium-molybdenum forging steel for the heaviest sections and the lowest service temperatures. The nickel addition buys low temperature toughness that 42CrMo4 cannot reach, which is why it is specified for propulsion shafting and heavy gearing.
UNS: 34CrNiMo6 / 1.6582 / EN24 | Category: Alloy Steel Forgings
Size Range
Outer Diameter: Round 100-1000 mm · forged weight 20 kg to 25 T
Chemical Composition (%)
| C | Cr | Ni | Mo |
|---|---|---|---|
| 0.30-0.38 | 1.30-1.70 | 1.30-1.70 | 0.15-0.30 |
Mechanical Properties
- Tensile Strength
- 1000-1200 MPa (Q&T)
- Yield Strength
- 800 MPa min
- Elongation
- 11% min
- Impact
- 45 J at -40 °C
Applicable Standards
- EN 10083-3
- EN 10250-3
- ASTM A829
- ASTM A388
- EN 10204 3.1
Applications
- Marine propulsion and intermediate shafts
- Heavy gear and pinion blanks
- Rotor shafts and turbine couplings
- Mill pinions and kiln tyres
- Aerospace and defence structural forgings
Industries Served
- Power & Energy
- Oil & Gas
- Chemical & Petrochemical
- Heavy Engineering
- Marine & Shipbuilding
- Cement & Mining
Equivalent Grades
- 1.6582
- 1.6582
- 34CrNiMo6
- 34CrNiMo6
- EN24
- EN24
- AISI 4340
- AISI 4340
- SNCM439
- SNCM439