Mat.No. 1.2770, DIN 85NiV4

Mat.No. 1.2770, DIN 85NiV4

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  Designation by Standards   Mat. No. DIN EN AISI 1.2770 85NiV4 - -   Chemical Composition (in weight %)   C Si Mn Cr Mo Ni V W Others 0.85 0.25 0.33 0.20 - 0.80 0.13 - -   Description Low alloyed cold work tool steel. Applications Dies, impact resistant tools. 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   20-100oC 20...


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    Designation by Standards

     

    Mat. No. DIN EN AISI
    1.2770 85NiV4 - -

     

    Chemical Composition (in weight %)

     

    C Si Mn Cr Mo Ni V W Others
    0.85 0.25 0.33 0.20 - 0.80 0.13 - -

     

    Description
    Low alloyed cold work tool steel.

    Applications
    Dies, impact resistant tools.

    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

     

    20-100oC 20-200oC 20-300oC 20-400oC 20-500oC 20-600oC 20-700oC
    8.9 10.4 11.4 12.9 12.5 13.4 14.0

     

    Soft Annealing
    Heat to 700-740oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 220.

    Stress Relieving
    Stress relieving to remove machining stresses should be carried out by heating to approx. 650oC, 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 770-800oC (for diameter up to 50 mm), 800-850oC (for diameter of 50-80 mm) followed by water quenching. Hardness after quenching is 64-66 HRC.

    Tempering
    Tempering temperature: 150-250oC. Hardness after tempering is 57-63 HRC.

    Tempering Temperature (oC) vs. Hardness (HRC)

     

    100oC 200oC 300oC 400oC 500oC
    66 60.5 54.5 48 40.5

     

    Tempering Diagram


    Click the image to enlarge the diagram.

    Forging
    Hot forming temperature: 1050-850oC.

    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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