1. Key Properties
31CrNiMoV 12-10 is a high-strength, low-alloy steel that is specifically designed for high-performance applications requiring superior toughness, strength, and wear resistance. This alloyed steel contains a combination of chromium, nickel, molybdenum, and vanadium, which provides excellent hardenability, impact resistance, and fatigue strength. The round bar form offers excellent machinability and precision for creating components that demand both high strength and dimensional accuracy.
The steel is especially effective in applications involving heavy loads, cyclic stresses, and resistance to wear, making it an ideal choice for demanding industrial environments.
2. Applications/Industries
Automotive (e.g., gears, crankshafts, axles)
Aerospace (e.g., turbine shafts, structural components, landing gears)
Industrial Machinery (e.g., high-strength shafts, spindles, rollers)
Oil & Gas Equipment (e.g., drill collars, pressure vessels)
Power Transmission Components (e.g., couplings, shafts, gears)
Heavy Equipment (e.g., construction machinery, mining equipment)
3. Certifications/Standards
Meets DIN 1.6582 specifications
ISO 9001 certified
4. Chemical Composition
Carbon (C): 0.35–0.45%
Manganese (Mn): 0.40–0.70%
Chromium (Cr): 1.00–1.30%
Nickel (Ni): 1.40–1.70%
Molybdenum (Mo): 0.20–0.30%
Vanadium (V): 0.05–0.15%
Phosphorus (P): ≤ 0.035%
Sulfur (S): ≤ 0.035%
5. Technical Specifications
Yield Strength: 950–1150 MPa (depending on heat treatment)
Tensile Strength: 1150–1400 MPa
Hardness: 28–34 HRC (Rockwell Hardness)