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LJ
Chemical Composition of 4140 (%)
C | Si | Mn | P | S | Cr | Ni | Mo | Cu |
0.38~0.45 | 0.17~0.37 | 0.50~0.80 | ≤0.035 | ≤0.035 | 0.9~1.20 | ≤0.30 | 0.15~0.25 | ≤0.30 |
Mechanical Property
Tensile Strength σb (MPa) | Yield Strength σs (MPa) | Elongation δ5 (%) | Reduction ψ (%) | Impact Akv (J) | Hardness |
≥1080(110) | ≥930(95) | ≥12 | ≥45 | ≥63 | ≤217HB |
Chemical Composition of 4140 (%)
C | Si | Mn | P | S | Cr | Ni | Mo | Cu |
0.38~0.45 | 0.17~0.37 | 0.50~0.80 | ≤0.035 | ≤0.035 | 0.9~1.20 | ≤0.30 | 0.15~0.25 | ≤0.30 |
Mechanical Property
Tensile Strength σb (MPa) | Yield Strength σs (MPa) | Elongation δ5 (%) | Reduction ψ (%) | Impact Akv (J) | Hardness |
≥1080(110) | ≥930(95) | ≥12 | ≥45 | ≥63 | ≤217HB |