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1Cr11Ni2W2MoV Heat-Resistant Steel: Top China Suppliers & Factory for High-End Equipment Manufacturing
Core Features
1. Excellent high temperature strength and toughness
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.
2. Excellent corrosion resistance and oxidation resistance
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.
3. Optimized process performance
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.
4. Flexible heat treatment adaptability
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.
Application Areas
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 & Shipbuilding
Pumps, valves, reactor components (non-seawater environment), replacing high-cost nickel-based alloys.
Summarize
1Cr11Ni2W2MoV, with its balanced combination of high strength, high-temperature resistance, and corrosion resistance, has become a core material for high-end equipment manufacturing. Its electroslag remelting process further ensures its reliability, making it suitable for demanding applications such as aviation, energy, and military. Choosing 1Cr11Ni2W2MoV means choosing the perfect combination of superior performance and long-term stability!
Frequently Asked Questions (FAQ)
Q: What are the primary strengthening elements in 1Cr11Ni2W2MoV steel?
A: Tungsten (W) and molybdenum (Mo) strengthen and refine the grain structure through solid solution, while vanadium (V) microalloying is used to inhibit high-temperature creep under thermal cycling stress.
Q: Up to what temperature can 1Cr11Ni2W2MoV maintain its strength?
A: The alloy maintains excellent strength and stability in environments below 600°C, and is completely resistant to oxidation in air up to 700°C.
Q: What are the typical mechanical properties at room temperature?
A: It features a tensile strength of 885–1080 MPa, a yield strength of 735–885 MPa, and an elongation rate of 12%–15%.
Q: How does heat treatment adjust the properties of this material?
A: Properties can be tailored via tempering: tempering at 660–710°C targets high toughness (impact energy ≥ 71 J, HB 269–321), while tempering at 540–590°C targets high strength (tensile strength ≥ 1080 MPa, HB 311–388).
Q: Why is the electroslag remelting process important for this alloy?
A: The electroslag remelting process ensures extremely low impurity content (S≤0.025%, P≤0.030), which significantly improves the purity of the material and enhances its lateral mechanical properties.
Q: Can 1Cr11Ni2W2MoV replace nickel-based alloys?
A: Yes, in non-seawater chemical and shipbuilding environments, it is commonly used to replace higher-cost nickel-based alloys for pumps, valves, and reactor components.