Mat.No. 1.2378, DIN X220CrVMo12-2

Mat.No. 1.2378, DIN X220CrVMo12-2

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  Designation by Standards   Mat. No. DIN EN AISI 1.2378 X220CrVMo12-2 - -   Chemical Composition (in weight %)   C Si Mn Cr Mo Ni V W Others 2.23 0.23 0.32 12.50 0.90 - 2.15 - -   Description Cold working steel. Ledeburitic chromium steel with high durability and cutting performance. Applications Tools for cutting of dynamo and transformer sheet, measuring instruments, tools for proccesing of plastics. Physical properties (avarage values) at ambient t...


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  • Product Detail

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    Designation by Standards

     

    Mat. No. DIN EN AISI
    1.2378 X220CrVMo12-2 - -

     

    Chemical Composition (in weight %)

     

    C Si Mn Cr Mo Ni V W Others
    2.23 0.23 0.32 12.50 0.90 - 2.15 - -

     

    Description
    Cold working steel. Ledeburitic chromium steel with high durability and cutting performance.

    Applications
    Tools for cutting of dynamo and transformer sheet, measuring instruments, tools for proccesing of plastics.

    Physical properties (avarage values) at ambient temperature
    Modulus of elasticity [103 x N/mm2]: 210
    Density [g/cm3]: 7.63
    Thermal conductivity [W/m.K]: 20.0
    Electric resistivity [Ohm mm2/m]: 0.65
    Specific heat capacity[J/g.K]: 0.46

    Soft Annealing
    Heat to 820-850oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 260.

    Stress Relieving
    Stress relieving to remove machining stresses should be carried out by heating to 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 1070-1100oC followed by air quenching or warm bath quenching 350-450oC. Hardness after quenching is 63-64 HRC.

    Tempering
    Tempering temperature: See the data bellow.

    Tempering Temperature (oC) vs. Hardness (HRC)

     

    100oC 200oC 300oC 400oC 500oC 550oC 600oC
    63.5 62 60 60 62.3 64 58

     

    Tempering Diagram

    Forging
    Hot forming temperature: 1050-900oC.

    Machinability
    The machinability rating of OCR12V2 is roughly 25 % that of free machining carbon steel 1018. Due to its abrasion resistant nature, machining in the hardened condition should be limited to finish grinding.

    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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