42Crmo高强度合金结构钢板
42crmo.钢板是超高强度合金结构钢，其特点是高强度和韧性，淬火性良好，淬火稳定性高，疲劳极限和多抗冲击性，淬火和回火处理后，良好的低温冲击韧性。42CRMO高强度合金结构钢板适用于制造大型和中型塑料模具，需要一定的强度和韧性。
42crmo steel sheet material properties
42CrMo has high creep strength and long-lasting strength at high temperatures. The steel usually has a surface quenching after quenching and tempering as a heat treatment scheme. As a plastic mold steel, it has excellent workability and good mechanical properties.
42crmo steel Plate Equivalent
Its corresponding international standard organization number:42crmo4.
Corresponding Japanese grade:SCM440
Corresponding to the German grade: 42CrMo4
Approximate to the ASTM grade: 4140
42crmo钢板的化学成分
Carbon C: 0.38 to 0.45%
Silicon Si: 0.17~0.37%
Manganese Mn: 0.50 to 0.80%
Sulfur S: Allowable residual content ≤0.035%
Phosphorus P: Allowable residual content ≤0.035%
Chromium Cr: 0.90 to 1.20%
Nickel Ni: Allowable residual content ≤0.30%
Copper Cu: Allowable residual content ≤0.30%
Molybdenum Mo: 0.15 to 0.25%
42crmo Steel Plate Physical Properties
1) Critical point temperature (approximate): Ac1 = 730 ° C, Ac3 = 800 ° C, Ms = 310 ° C.
2) Linear expansion coefficient: temperature 20~100°C/20~200°C/20~300°C /20 ~400°C/20~500°C /20~600°C, linear expansion coefficient: 11.1×10K /12.1 × 10K / 12.9 × 10K / 13.5 × 10K / 13.9 × 10K14.1 × 10K.
3) Modulus of elasticity: temperature 20 ° C / 300 ° C / 400 ° C / 500 ° C / 600 ° C, elastic touch 210000MPa / 185000MPa / 175000MPa / 165000MPa / 15500oMPa
42crmo Steel Plate Characteristics And Application
This material is featured with high strength, hardenability, good toughness, small deformation during quenching, high creep strength and long-lasting strength at high temperatures. Forgings requiring higher strength and larger quenching section than35crmo.钢，如大型齿轮，用于机车牵引，增压器传动齿轮，压力容器齿轮，后轴，极具装载的连杆和弹簧夹。42CrMO合金也可用于油深井钻杆管接头和渔具，低于2000米，可用于弯曲机的模具。
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