42CrMo hot rolled steel sheet/bar

42CrMo hot rolled steel sheet/bar

undefined
undefined
undefined
undefined
+
  • undefined
  • undefined
  • undefined
  • undefined
42CrMo steel belongs to plastic mold steel in mold steel from the perspective of material classification. It has good mechanical properties and machinability, and is widely used. There are mainly two types of materials, plate and round bar. Plate is used for mold processing Production, round rods are used to machine parts directly, which has been recognized by the industry.

图片名称

hiddenValue

  • Product Detail
  • | Technical Information
  • | Packaging
    • Commodity name: 42CrMo hot rolled steel sheet/bar

    42CrMo steel belongs to plastic mold steel in mold steel from the perspective of material classification. It has good mechanical properties and machinability, and is widely used. There are mainly two types of materials, plate and round bar. Plate is used for mold processing Production, round rods are used to machine parts directly, which has been recognized by the industry.

    Product introduction

    42CrMo4 is a steel for quenching and tempering, which has a good combination of strength and toughness in the quenched and tempered condition. After the oil quenching, the steel will be through hardened up to ø60 mm bar diameter. The microstructure of larger dimensions is not fully martensite. The steel is applicable to induction hardening. The surface hardness will exceed min. 53 HRC. 42CrMo4 can be delivered M-treated in order to optimize the machinability.

    Technical data

     Chemical Composition
    Steel Grade C Si Mn P S Cr Mo Cu
    35CrMo 0.38~0.45% 0.17~0.37% 0.50~0.80% ≤0.035% ≤0.035% 0.90~1.20% 0.15~0.25% ≤0.30%


    Mechanical properties
     

    Yield strength σs/MPa (>=) Tensile strength σb/MPa (>=) Elongation
    δ5/% (>=)
    Reduction of
    area ψ/% (>=)
    Impact absorbing energy Aku2/J (>=) Hardness HBS
    100/3000 max
    ≥930(95) ≥1080(110) ≥12 ≥45 ≥78(8) ≤217HB


    In order to increase the die life to more than 800,000 die times, the pre-hardened steel can be hardened by quenching and low temperature tempering. When quenching, preheat at 500-600℃ for 2-4 hours, and then keep it at 850-880℃ for a certain period of time (at least 2 hours), then put it in oil and cool to 50-100℃ and air cooling, the hardness can reach 50 after quenching -52HRC, in order to prevent cracking, 200℃ low temperature tempering treatment should be carried out immediately. After tempering, the hardness can be maintained above 48HRC.
     

    42CrMo Steel Heat Treatment

    Annealing

    Annealing in 760±10℃, furnace cooling to 400℃ then air cooling.

    Normalizing

    Normalizing in 760±10℃, air cooling after out of the furnace.

    Notes About Quenching and Tempering Treatment

    Must pay attention to the temperature of liquid coolant. And must make sure there are no oil contamination or other impurities. Otherwise, the hardness of steel will be not enough or out of the balance.

    Quenching and tempering for billet steel material without processing, then it will get non-uniform hardness. So processing of forging or grinding is necessary before the Q+T.


Get a Free Quote


To: Tianjin Bohai Metal Company


Action
I would like some more details. Product Requirements: Customization: Delivery Time: Payment: Shipping: Usage:
((Max 5 files. Support jpg, jpeg, png, gif, txt, doc, pdf, xls, docx, xlsx, less than 5MB))

Contact & Optional Details

Send Inquiry Now