Mat.No. 1.2436, DIN X210CrW12

Mat.No. 1.2436, DIN X210CrW12

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  Designation by Standards   Mat. No. DIN EN AISI 1.2436 X210CrW12 X210CrW121 -   Chemical Composition (in weight %)   C Si Mn Cr Mo Ni V W Others 2.12 0.25 0.45 12.00 - - - 0.70 -   Description Ledeburitic chromium steel with high durability and cutting performance; low distortion on hardening. Applications Cutting tools for sheet metal thicknesses up to approximately 2 mm, paper blades,stone compression moulds, section rolling-mill rolls, deep-drawin...


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    Designation by Standards

     

    Mat. No. DIN EN AISI
    1.2436 X210CrW12 X210CrW121 -

     

    Chemical Composition (in weight %)

     

    C Si Mn Cr Mo Ni V W Others
    2.12 0.25 0.45 12.00 - - - 0.70 -

     

    Description
    Ledeburitic chromium steel with high durability and cutting performance; low distortion on hardening.

    Applications
    Cutting tools for sheet metal thicknesses up to approximately 2 mm, paper blades,stone compression moulds, section rolling-mill rolls, deep-drawing tools.

    Physical properties (avarage values) at ambient temperature
    Modulus of elasticity [103 x N/mm2]: 210
    Density [g/cm3]: 7.77
    Thermal conductivity [W/m.K]: 20.0, 20.5 (at 350oC), 24.1 (at 700oC)
    Electric resistivity [Ohm mm2/m]: 0.65
    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
    10.8 11.8 12.4 12.5 12.8 12.9 13.0

     

    Continuous Cooling Transformation (CCT) Diagram

    Time-Temperature Transformation (TTT) Diagram

    Soft Annealing
    Heat to 800-840oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 255.

    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 940-980oC followed by air,oil quenching or warm bath quenching 500-550oC. Hardness after quenching is 64 HRC.

    Tempering
    Tempering temperature: See the data bellow.

    Tempering Temperature (oC) vs. Hardness (HRC)

     

    100oC 200oC 300oC 400oC 500oC 600oC
    63 62 60 58 56 48

     

    Tempering Diagram

    Forging
    Hot forming temperature: 1050-850oC.

    Machinability
    The machinability rating of OCR12SP is roughly 20-25% 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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