Mat.No. 1.2631, DIN X50CrMoW9-1-1

Mat.No. 1.2631, DIN X50CrMoW9-1-1

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  Designation by Standards   Mat. No. DIN EN AISI 1.2631 X50CrMoW9-1-1 - -   Chemical Composition (in weight %)   C Si Mn Cr Mo Ni V W Others 0.50 0.90 0.50 8.50 1.20 - - 1.20 -   Description Cold work tool steel. High toughness and resistance to dynamic loading. Applications Severely stressed machine blades for the cellulose, paper and fiberboard industries, flat-blade and circular blades for cutting 5 to 15 mm thick sheet/plate. Physical properties (...


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    Designation by Standards

     

    Mat. No. DIN EN AISI
    1.2631 X50CrMoW9-1-1 - -

     

    Chemical Composition (in weight %)

     

    C Si Mn Cr Mo Ni V W Others
    0.50 0.90 0.50 8.50 1.20 - - 1.20 -

     

    Description
    Cold work tool steel. High toughness and resistance to dynamic loading.

    Applications
    Severely stressed machine blades for the cellulose, paper and fiberboard industries, flat-blade and circular blades for cutting 5 to 15 mm thick sheet/plate.

    Physical properties (avarage values) at ambient temperature
    Modulus of elasticity [103 x N/mm2]: 210
    Density [g/cm3]: 7.80
    Thermal conductivity [W/m.K]: 26.0
    Electric resistivity [Ohm mm2/m]: 0.60
    Specific heat capacity[J/g.K]: 0.46

    Coefficient of Linear Thermal Expansion 10-6 oC-1

     

    20-100oC 20-200oC 20-300oC 20-400oC 20-500oC 20-600oC 20-700oC 20-800oC
    9.8 10.2 10.5 11.3 11.9 12.4 12.8 13.0

     

    Continuous Cooling Transformation (CCT) Diagram

    Soft Annealing
    Heat to 820-870oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 250.

    Stress Relieving
    Stress relieving to remove machining stresses should be carried out by heating to approx. 650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

    Hardening
    Harden from a temperature of 1020-1050oC followed by oil, air or warm bath (approx. 400oC.) quenching. Hardness after quenching is 61 HRC.

    Tempering
    Tempering temperature: 150-400oC

    Tempering Temperature (oC) vs. Hardness (HRC)

     

    100oC 200oC 300oC 400oC 500oC 525oC 550oC 575oC 600oC 700oC
    60 57 56 56 59 59 53 48 43 33

     

    Tempering Diagram

    Forging
    Hot forming temperature: 1050-900oC.

    Machinability
    No data.

    Disclaimer
    The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.

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