Mat.No. 1.2838, DIN 145V33

Mat.No. 1.2838, DIN 145V33

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  Designation by Standards   Mat. No. DIN EN AISI 1.2838 145V33 - -   Chemical Composition (in weight %)   C Si Mn Cr Mo Ni V W Others 1.45 0.28 0.40 - - - 3.25 - -   Description Low alloyed cold work tool steel, wear resistant, for hardening in water. Applications Dies and tools for cold and hot forging, upsetting, deep drawing, one-part nuts, stamps. Physical properties (avarage values) at ambient temperature Modulus of elasticity [103 x N/mm2]: 210 ...


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    Designation by Standards

     

    Mat. No. DIN EN AISI
    1.2838 145V33 - -

     

    Chemical Composition (in weight %)

     

    C Si Mn Cr Mo Ni V W Others
    1.45 0.28 0.40 - - - 3.25 - -

     

    Description
    Low alloyed cold work tool steel, wear resistant, for hardening in water.

    Applications
    Dies and tools for cold and hot forging, upsetting, deep drawing, one-part nuts, stamps.

    Physical properties (avarage values) at ambient temperature
    Modulus of elasticity [103 x N/mm2]: 210
    Density [g/cm3]: 7.80

    Coefficient of Linear Thermal Expansion 10-6 oC-1

     

    20-100°C 20-200°C 20-300°C 20-400°C 20-500°C 20-600°C 20-700°C
    12.45 12.78 13.3 13.78 14.12 14.50 14.73

     

    Continuous Cooling Transformation (CCT) Diagram

    Soft Annealing
    Heat to 720-760°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 230.

    Stress Relieving
    Stress relieving to remove machining stresses should be carried out by heating to approx. 650°C, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

    Hardening
    Harden from a temperature of 800-880, 840-950°C followed by water or oil quenching. Hardness after quenching is 64 HRC.

    Tempering
    Tempering temperature: 200-350°C (quenching in water), 180-300°C (quenching in oil). Average hardness after tempering is 56-62 HRC.

    Tempering Temperature (°C) vs. Hardness (HRC)

     

    100°C 200°C 300°C 400°C
    66 62 58.5 50.5

     

    Tempering Diagram

    Forging
    Hot forming temperature: 1100-900°C.

    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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