42CrMo4 high strength alloy structural steel introduction
42CrM04 high strength alloy steel
42CrM04 steel belongs to ultra-high strength alloy structural steel, is a kind of pre-hardened plastic die steel, Cr.Mo elements can improve the hardenability of steel, can make steel get the best room temperature and high temperature comprehensive mechanical properties, Mo can also make steel forging easy, significantly reduce the critical cooling rate, can eliminate the tempering brittleness tendency, and can obtain dense structure and high strength. Therefore, 42CrMo4 steel has high strength and toughness, hardenability is also good, no obvious tempering brittleness, high fatigue limit and resistance to multiple shocks after tempering treatment, low temperature impact toughness.
Second, 42CrM04 implementation standard
42CrM04 steel plate implementation standard :EN10083/3-2006
Chemical composition and mechanical properties of 42CrMo4
42CrMo4 Carbon C:0.38 ~ 0.45
42CrMo4 Silicon Si: 0.17 ~ 0.37
42CrMo4 Manganese Mn: 0.35 ~ 0.65
42CrMo4 Chromium Cr: 0.90 ~ 1.30
42CrMo4 Molybdenum Mo: 0.20 ~ 0.30
42CrMo4 Nickel Ni: ≤0.30
42CrMo4 Copper Cu: ≤0.30
42CrMo4 Sulfur S: ≤0.035
42CrMo4 P :≤0.035
42CxMo4 Mechanical Properties:
42CrMo4 Tensile strength σb (MPa) : ≥1080
42CrMo4 Yield strength σs (IPa): ≥930
42CrMo4 elongation, δ5 (%) : ≥ 12
42CrMo4 section shrinkage ψ (%):≥45
42CrMo4 Impact work, Akv (J) : ≥ 63.
42CrMo4 Impact toughness value 0kv (J/cm2): ≥78
42CrMo4 Hardness: ≥217HB
Delivery status of 42CrMo4
42CrMo4 Delivery status: hot rolling, controlled rolling, normalizing and normalizing and tempering state of delivery, the specific delivery status should be indicated in the warranty.
Five, 42CrMo4 use
42CrMo4 Uses: such as locomotive traction with large gear, supercharger transmission gear, rear shaft, engine cylinder, 1200~2000m oil deep well drill pipe joint and fishing tools.
