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    Heat Treated Steel

    Tool Steel Plastic Mold Steel

    Buderus 2711 ISO-B
    Similar to MR-11
    Pre Heat Treatment HRC 36-40
     
    Chemical Composition
     
      C Si Mn P S Cr Ni Mo V
    Typical analysis 0.52 0.20 0.70 0.020 0.002 0.75 1.75 0.30 0.10
    Chemical composition
    as per SEL
    0.50–
    0.60
    0.15–
    0.35
    0.50–
    0.80
    0.025 0.025 0.60–
    0.80
    1.50–
    1.80
    0.25–
    0.35
    0.07–
    0.12
     
    Register of European
    Steels (SEL)
    54 NiCrMoV 6
    AFNOR 55 NCDV 7
    AISI ~ 6 F 2
    BS ~ BH 224

    Characteristics
    High toughness, high compressive strength, polishable.
    Nitridable as delivered; hard chrome plateable, fl ame hardenable, grain reliable.

    Applications
    For larger compression and injection moulds subject to higher mechanical and thermal stress.
    Contour hardening is recommended.
    With higher working hardness,

    Physical properties (reference values)
     
    Thermal expansion
    coeffi cient (10–6/K)
    20–100 °C
    11.0
    20–250 °C
    12.4
    20–500 °C
    13.5
    Thermal conductivity
    (W/mK)
    20 °C
    33.0
    250 °C
    35.0
    500 °C
    33.0
    Young’s modulus
    (GPa)
    20 °C
    212
    250 °C
    197
    500 °C
    175

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