Chemical composition, mechanical properties, properties and uses of 37SiMn2MoV
Introduction of 37SiMn2MoV Material Name: Alloy Structural Steel Grade: 37SiMn2MoV Standard: GB/T 3077-1988 â—Features and scope of application: It is an advanced quenched and tempered steel with excellent comprehensive performance. It has high hardenability and high strength and toughness after quenching and tempering. use Used for the manufacture of quenched and tempered parts with large cross-sections subjected to heavy loads, such as shafts, gears, rotors, connecting rods and high-pressure seamless steel tubes for heavy machinery, used as high-pressure vessels in petrochemicals, large bolts, etc. . The steel can be used in the temperature range of -20-520 °C, and can be used to make large bolt fasteners with a working temperature below 450 °C. It can also be used instead of 35CrMo, 40CrNiMo and other steels. This steel is quenched. After low temperature tempering, it can be used as super High strength steel is used. chemical composition â—Chemical composition: Carbon C: 0.33 to 0.39 Silicon Si: 0.60~0.90 Manganese Mn: 1.60～1.90 Sulfur S: Allowable residual content ≤0.35 Phosphorus P: Allowable residual content ≤0.35 Chromium Cr: Allowable residual content ≤ 0.30 Nickel Ni: Allowable residual content ≤0.30 Copper Cu: Allowable residual content ≤ 0.30 Vanadium V: 0.05~0.12 Molybdenum Mo: 0.40~0.50 Mechanical properties â—Mechanical properties: Tensile strength σb (MPa): ≥ 980 (100) Yield strength σs (MPa): ≥ 835 (85) Elongation δ5 (%): ≥12 Area shrinkage ψ (%): ≥ 50 Impact work Akv (J): ≥ 63 Impact toughness value αkv (J/cm2): ≥78(8) Hardness: ≤ 269HB Sample size: sample blank size is 25mm Heat treatment specification â— Heat treatment specifications and metallographic organization: Heat treatment specification: quenching 870 ° C, water cooling, oil cooling; tempering 650 ° C, water cooling, air cooling. â— Delivery status: delivery by heat treatment (normalizing, annealing or high temperature tempering) or no heat treatment, delivery The status should be indicated in the contract. |
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