Japan Datong, The SACM645 of alloy structural steel
Product Description: SACM645 (JIS G4202)
Performance and application:
Has a high permeation performance and mechanical properties, excellent heat resistance and corrosion resistance, high fatigue strength and good heat resistance, non-temper embrittlement, Passable workability, low plasticity when cold deformation, welding poor hardenability low, generally in the quenched and tempered and infiltration helium.
Uses:
For manufacturing high fatigue strength, high abrasion resistance, the exact size after heat treatment, high strength, a variety of sizes small seepage helium Parts.
Chemical composition:
Carbon C: 0.35 ~ 0.42
Silicon Si: 0.20 ~ 0.45
Manganese Mn: 0.30 ~ 0.60
Sulfur S: allow the residual content ≤ 0.035
Phosphorus P: allow the residual content ≤ 0.035
Chromium Cr: 1.35 ~ 1.65
Ni: to allow the residual content ≤ 0.030
Cu: to allow the residual content ≤ 0.030
Molybdenum Mo: 0.15 ~ 0.25
Mechanical properties:
Tensile strength σb (MPa): ≥ 980 (100)
Yield strength σs (MPa): ≥ 835 (85)
Elongation δ5 (%): ≥ 14
Reduction of area ψ (%): ≥ 50
Impact energy Akv (J): ≥ 71
Impact toughness value of alpha kv (J/cm2): ≥ 88 (9)
Hardness: ≤ 229HB
Sample size: Sample blank dimensions of 30mm
Heat treatment process:
Heat Treatment Specification: quenching 940 ℃, water, oil cooling; tempering 640 ° C, water-cooled, oil-cooled.
Product Description: SACM645 (JIS G4202)
Performance and application:
Has a high permeation performance and mechanical properties, excellent heat resistance and corrosion resistance, high fatigue strength and good heat resistance, non-temper embrittlement, Passable workability, low plasticity when cold deformation, welding poor hardenability low, generally in the quenched and tempered and infiltration helium.
Uses:
For manufacturing high fatigue strength, high abrasion resistance, the exact size after heat treatment, high strength, a variety of sizes small seepage helium Parts.
Chemical composition:
Carbon C: 0.35 ~ 0.42
Silicon Si: 0.20 ~ 0.45
Manganese Mn: 0.30 ~ 0.60
Sulfur S: allow the residual content ≤ 0.035
Phosphorus P: allow the residual content ≤ 0.035
Chromium Cr: 1.35 ~ 1.65
Ni: to allow the residual content ≤ 0.030
Cu: to allow the residual content ≤ 0.030
Molybdenum Mo: 0.15 ~ 0.25
Mechanical properties:
Tensile strength σb (MPa): ≥ 980 (100)
Yield strength σs (MPa): ≥ 835 (85)
Elongation δ5 (%): ≥ 14
Reduction of area ψ (%): ≥ 50
Impact energy Akv (J): ≥ 71
Impact toughness value of alpha kv (J/cm2): ≥ 88 (9)
Hardness: ≤ 229HB
Sample size: Sample blank dimensions of 30mm
Heat treatment process:
Heat Treatment Specification: quenching 940 ℃, water, oil cooling; tempering 640 ° C, water-cooled, oil-cooled.