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1Cr11Ni2W2MoV Steel: High-Performance Heat-Resistant Alloy from China Suppliers and Factory for Aerospace Applications
It can maintain high strength and stability in an environment below 600°C, with a room temperature tensile strength of 885–1080 MPa, a yield strength of 735–885 MPa, and an elongation of 12%–15%.
Tungsten (W) and molybdenum (Mo) elements strengthen and refine grains through solid solution, while vanadium (V) microalloying inhibits high-temperature creep, ensuring that the material still has a high fatigue life under thermal cycling stress.
The high chromium content (10.50%–12.00%) forms a dense Cr₂O₃ oxide film that is resistant to fresh water, wet atmosphere, and weak acid and alkali corrosion.
It is "completely resistant to oxidation" (oxidation weight gain rate <0.1 g/m²·h) in air at 700°C and is suitable for high-temperature oxidation environments.
The electroslag remelting process ensures extremely low impurity content (S≤0.025%, P≤0.030), improving material purity and lateral mechanical properties.
It supports welding (TIG/MIG), forging and machining, and its annealed hardness ranges from HB 197 to 269, making it easy to form complex components.
Performance customization can be achieved through differentiated tempering systems:
High toughness requirement: Tempering at 660–710°C → impact energy ≥ 71 J, hardness HB 269–321.
High strength requirements: Tempering at 540–590°C → tensile strength ≥1080 MPa, hardness HB 311–388.
- 1. Aerospace: engine compressor blades, turbine discs, shafts and fasteners, subject to tens of thousands of cycle loads.
- 2. Energy equipment: gas turbine combustion chamber liners, nuclear power plant heat transfer tubes, high temperature and high pressure corrosion resistance.
- 3. Chemical industry and shipbuilding: pumps, valves, reactor components (non-seawater environment), replacing high-cost nickel-based alloys.