42CrMo round bar steel : China executive standard GB/T 3077-1999
Its corresponding international standard organization brand: 42CrMo4
Corresponding Japanese brand: SCM440
Corresponding German brand: 42CrMo4 or 1.7225
Corresponding American brand: 4140 or G414
42CrMo round bar steel chemical composition:
C |
Si |
Mn |
S |
P |
Cr |
Ni |
Cu |
Mo |
0.38-0.45 |
0.17-0.37 |
0.50-0.80 |
≤0.035 |
≤0.035 |
0.90-1.20 |
≤0.030 |
≤0.030 |
0.15-0.25 |
42CrMo round bar steel mechanical properties: tensile strength≥1080MPa; yiels strength≥930MPa; elongation≥12%。
42CrMo steel is ultra high strength steel, high strength and toughness, hardenability is also good, no obvious temper brittleness, after quenching and tempering treatment have high fatigue limit and anti shocksand low temperature impact toughness. The steel is suitable for making large and medium plastic moulds with certain strength and toughness.
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