Mat.No. 1.2080, DIN X210Cr12, AISI D3

Mat.No. 1.2080, DIN X210Cr12, AISI D3

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Designation by Standards Mat. No. DIN EN AISI 1.2080 X210Cr12 - D3 Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 2.05 0.25 0.30 11.50 - - - - - Description D3 is an oil hardening, high carbon/chromium type tool steel with very high wear resistance. It hardens with a very slight change in size. The alloy possesses very high compressive strength and is deep hardening. Applications Cutting tools, stamping, woodworking, drawing, deep drawing and pressing tools, co...


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    Designation by Standards

    Mat. No. DIN EN AISI
    1.2080 X210Cr12 - D3

    Chemical Composition (in weight %)

    C Si Mn Cr Mo Ni V W Others
    2.05 0.25 0.30 11.50 - - - - -

    Description
    D3 is an oil hardening, high carbon/chromium type tool steel with very high wear resistance. It hardens with a very slight change in size. The alloy possesses very high compressive strength and is deep hardening.

    Applications
    Cutting tools, stamping, woodworking, drawing, deep drawing and pressing tools, cold working rolls, measuring tools. 

    Physical properties (avarage values) at ambient temperature
    Modulus of elasticity [103 x N/mm2]: 210 
    Density [g/cm3]: 7.67
    Thermal conductivity [W/m.K]: 20.0 
    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
    11.7 12.0 12.4 12.9 13.3 13.6 14.0

    Continuous Cooling Transformation (CCT) Diagram

    Time-Temperature Transformation (TTT) Diagram

    Soft Annealing
    Heat to 800-840oC, cool slowly. This will produce a maximum Brinell hardness of 250. To secure uniform softness.

    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 oil quenching or warm bath approx. 400oC. Hardness after quenching is 64-66 HRC.

    For small parts up to thickness 30 mm. Harden from a temperature of 960-100oC followed by air, comompressed air quenching. Hardness after quenching is 63-65 HRC.

    Tempering
    Tempering temperature: 150-400oC.

    Tempering Temperature (oC) vs. Hardness (HRC)

    100oC 200oC 300oC 400oC 500oC 600oC
    64 62 60 57 53 42

    Tempering Diagram

    Forging
    Hot forming temperature: 1050-850oC. 

    Machinability
    The machinability rating of D3 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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