chemical composition:
Carbon C: 0.10~0.16
Silicon Si: ≤0.60
Manganese Mn: ≤0.60
Sulfur S :≤0.030
Phosphorus P :≤0.035
Chromium Cr: 10.50~12.00
Nickel Ni: 1.40~1.80
Vanadium V: 0.18~0.30
Molybdenum Mo: 0.35~0.50
Tungsten W: 1.50~2.00
Mechanical properties:
Tensile strength σb (MPa): 1) ≥ 885; 2) ≥ 1080
Conditional yield strength σ0.2 (MPa): 1) ≥ 735; 2) ≥ 885
Elongation δ5 (%): 1) ≥ 15; 2) ≥ 12
Area shrinkage ψ (%): 1) ≥ 55; 2) ≥ 50
Impact work Akv (J): 1) ≥ 71; 2) ≥ 55
Hardness: 1) 269~321HB; 2) 311~388HB
Heat treatment specifications and metallographic organization:
Heat treatment specifications: 1) normalizing, 1000~1020; quenching, 1000~1020 oil cooling or air cooling; tempering, 600~710 oil cooling or air cooling; 2) normalizing, 1000~1020, quenching, 1000~1020 oil cooling or Air-cooled; tempered, 540~600 oil-cooled or air-cooled.
Metallographic organization: The tissue is characterized by martensite type.
Delivery status: Generally delivered in the state of heat treatment specification, the type of heat treatment is indicated in the contract; if not specified, it is delivered according to the state without heat treatment.
1Cr11Ni2W2MoV technical standard:
YB675-73 "Technical conditions for stainless steel and heat-resistant steel bars for aviation";
HB5270-83 "Advanced high quality stainless steel rod for aero-engine rotating parts";
YB677-71 "Aerial stainless steel cold rolled sheet steel";
HB5204-77 "Structural steel, stainless steel and heat-resistant steel forgings"