Material Name: Alloy Steel
Grade: 35SiMn
Standard: GB / T 3077-1988
● Features and application:
Hardenability, good cold deformation, the plastic medium, poor welding. For medium-speed, medium or high load and impact load small parts such as gears, spindles, connecting rods, worm, engine shafts, flywheels, turbine impeller, 400 ℃ the following important fasteners. In addition to low temperature (-20 ℃ or less) impact toughness somewhat less, but can fully substitute for quenched and tempered steel 40Cr, some place 40CrNi steel.
● Chemical Composition:
Carbon C: 0.32 ~ 0.40
Si Si: 1.10 ~ 1.40
Manganese Mn: 1.10 ~ 1.40
Sulfur S: to allow the residual content of ≤ 0.35
Phosphorus P: allow the residual content of ≤ 0.35
Chromium Cr: allow the residual content of ≤ 0.30
Ni: to allow the residual content of ≤ 0.30
Copper Cu: to allow the residual content of ≤ 0.30
● Mechanical Properties:
Tensile strength σb (MPa): ≥ 885 (90)
Yield strength σs (MPa): ≥ 735 (75)
Elongation δ5 (%): ≥ 15
Reduction of area ψ (%): ≥ 45
Impact energy Akv (J): ≥ 47
Impact toughness αkv (J/cm2): ≥ 59 (6)
Hardness: ≤ 229HB
Sample size: Sample size is 25mm rough
● Heat treatment and microstructure specifications:
Standard heat treatment: quenching 900 ℃, water-cooled; tempering 570 ℃, water-cooled, oil-cooling.
● Delivery status: to heat treatment (normalizing, annealing, or tempering) or heat treatment delivery, delivery status should be indicated in the contract.
Grade: 35SiMn
Standard: GB / T 3077-1988
● Features and application:
Hardenability, good cold deformation, the plastic medium, poor welding. For medium-speed, medium or high load and impact load small parts such as gears, spindles, connecting rods, worm, engine shafts, flywheels, turbine impeller, 400 ℃ the following important fasteners. In addition to low temperature (-20 ℃ or less) impact toughness somewhat less, but can fully substitute for quenched and tempered steel 40Cr, some place 40CrNi steel.
● Chemical Composition:
Carbon C: 0.32 ~ 0.40
Si Si: 1.10 ~ 1.40
Manganese Mn: 1.10 ~ 1.40
Sulfur S: to allow the residual content of ≤ 0.35
Phosphorus P: allow the residual content of ≤ 0.35
Chromium Cr: allow the residual content of ≤ 0.30
Ni: to allow the residual content of ≤ 0.30
Copper Cu: to allow the residual content of ≤ 0.30
● Mechanical Properties:
Tensile strength σb (MPa): ≥ 885 (90)
Yield strength σs (MPa): ≥ 735 (75)
Elongation δ5 (%): ≥ 15
Reduction of area ψ (%): ≥ 45
Impact energy Akv (J): ≥ 47
Impact toughness αkv (J/cm2): ≥ 59 (6)
Hardness: ≤ 229HB
Sample size: Sample size is 25mm rough
● Heat treatment and microstructure specifications:
Standard heat treatment: quenching 900 ℃, water-cooled; tempering 570 ℃, water-cooled, oil-cooling.
● Delivery status: to heat treatment (normalizing, annealing, or tempering) or heat treatment delivery, delivery status should be indicated in the contract.
