60Si2Mn hot rolled steel round bars

60Si2Mn hot rolled steel round bars

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60Si2Mn spring steel is a widely used silico-manganese spring steel with slightly higher strength, elasticity and hardenability than 55Si2Mn. GB 60SI2MN Steel is a high quality Alloy Spring Steel, It belong to the high quality high carbon alloy Spring Steel. Quenched & Tempered Hardness is 28-34 HRc. 60SI2MN steel Annealing delivery hardenss less than 250HB.

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    • Commodity name: 60Si2Mn hot rolled steel round bars

    60Si2Mn spring steel is a widely used silico-manganese spring steel with slightly higher strength, elasticity and hardenability than 55Si2Mn. GB 60SI2MN Steel is a high quality Alloy Spring Steel, It belong to the high quality high carbon alloy Spring Steel. Quenched & Tempered Hardness is 28-34 HRc. 60SI2MN steel Annealing delivery hardenss less than 250HB.

    Product introduction

    60Si2Mn spring steel is a widely used silico-manganese spring steel with slightly higher strength, elasticity and hardenability than 55Si2Mn. 60Si2Mn spring steel industry produces flat springs with large load or coil springs with diameter less than 30mm. It is also suitable for making heat-resistant springs with non-corrosive medium with working temperature below 250 °C and with alternating load and high stress. Large important coil springs for working under, as well as automotive shock absorption systems.

    Technical data

    Chemical Component:

    C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Cu(%) Yield stress (Mpa) Tensile stress (Mpa) Elongation (%)
    0.56-0.64 1.5-2.0 0.6-0.9 ≦0.035 ≦0.035 ≦0.35 ≦0.35 ≦0.35 ≧1175 ≧1275 ≧5

    Mechanical properties:

    Tensile strength σb (MPa): ≥ 1274 (130)
    Yield strength σs (MPa): ≥1176 (120)
    Elongation δ10 (%): ≥5
    Area shrinkage ψ (%): ≥25
    Hardness: hot rolling, ≤321HB; cold drawing + heat treatment, ≤321HB

    Heat specification:

    60Si2Mn heat treatment specification: quenching 870 °C ± 20 ° C, oil cooling; tempering 480 ° C ± 50 ° C (specially required, ± 30 ° C).
    Metallographic organization: tempered troostite.

    Delivery status: Hot-rolled steel is delivered in heat-treated or non-heat-treated condition, and cold-drawn steel is delivered in heat-treated state.
    Hot rolling delivery specifications: 2.0~18.0mm, with and without annealing. Cold rolling delivery specifications: 0.3~4.3mm (steel strip)

    Heat treatment method

    60Si2Mn heat treatment methods are isothermal tempering and grading quenching, sub-temperature quenching and high temperature tempering, deformation heat treatment process. The method can effectively improve the strength and service life of 60Si2Mn spring steel. 60Si2Mn belongs to spring steel, suitable for making automobile leaf spring. 60Si2Mn spring steel heat treatment isothermal tempering and grading quenching, sub-temperature quenching and high temperature tempering, deformation heat treatment process. The method can effectively improve the strength and service life of 60Si2Mn spring steel.

    density

    60Si2Mn density of 7.85g / cm3. 60Si2Mn is widely used silicon manganese spring steel, strength, elasticity and hardenability than 55Si2Mn slightly higher. Suitable for railway vehicles, automobile tractor industry to produce a larger load of flat springs or wire diameter of 30mm below the coil spring.

     


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To: Tianjin Bohai Metal Company


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