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42CrMo Alloy steel round bar
Name: structural steel 42CrMo
42CrMo steel is high strength steel, high strength and toughness, hardenability is also good, no obvious temper brittleness, after quenching has a higher resistance to fatigue limit and repeated shocks, good low temperature impact toughness. The steel suitable for manufacturing requires a certain strength and toughness of the large and medium-sized plastic mold.
42CrMo structural 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 structural mechanical properties of steel:
Tensile strength σb (MPa): ≥ 1080 (110) Yield strength σs (MPa): ≥ 930 (95)
Elongation δ5 (%): ≥ 12 Reduction of area ψ (%): ≥ 45
Impact energy Akv (J): ≥ 63 Impact toughness values αkv (J/cm2): ≥ 78 (8)
Hardness: ≤ 217HB Sample size: Sample size is 25mm rough
42CrMo structural mechanical properties of steel: strength, hardenability, good toughness, when small deformation hardening, high strength and creep rupture strength at high temperatures. Required for the manufacture of higher intensity than the 35CrMo steel and tempered forgings larger cross-section, such as the big locomotive traction gears, supercharger drive gear, pressure vessel gear, rear axle, greatly affected by the load rod and spring can also be used to 2000m deep oil drill pipe joints and fishing tools, and can be used for molds and other bending machines.