ASTM4130 Chemical Composition and Mechanical Properties

Hit：262025-12-18 17:11:07　

ASTM4130 Chemical Composition and Mechanical Properties
chemical composition
Carbon C: 0.28-0.33
Silicon Si: 0.15~0.35
Manganese Mn: 0.40-0.60
Sulfur S: allowable residual content ≤ 0.040
Phosphorus P: allowable residual content ≤ 0.035
Chromium Cr: 0.80-1.10
Nickel Ni: allowable residual content ≤ 0.030
Copper Cu: allowable residual content ≤ 0.030
Molybdenum Mo: 0.15~0.25
mechanical properties
Tensile strength σ b (MPa): ≥ 930 (95) Yield strength σ s (MPa): ≥ 785 (80)
Elongation rate δ 5 (%): ≥ 12
Shrinkage rate of cross-section (%): ≥ 50
Impact energy Akv (J): ≥ 63
Impact toughness value α kv (J/cm2): ≥ 78 (8)
Hardness: ≤ 229HB
Sample size: The sample blank size is 25mm
Heat treatment specifications: quenching at 880 ℃, water cooling, oil cooling; Tempered at 540 ℃, water-cooled or oil cooled.