Mat.No. 1.2842, DIN 90MnCrV8, AISI O2

Mat.No. 1.2842, DIN 90MnCrV8, AISI O2

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Designation by Standards Mat. No. DIN EN AISI 1.2842 90MnCrV8 90MnV8 O2 Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 0.90 0.25 2.00 0.35 - - 0.13 - - Description Cold work tool steel with high dimensional stability at heat treatment. Very high resistance to cracking. High machinability, medium thoughness and resistance to wear.  Applications Measuring tools, machine knives for the wood, paper and metal industry, cold cutting shear blades, thread cutting tools...


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  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: Shenzhen
  • Payment Terms: L/C,D/A,D/P,T/T
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    Designation by Standards

    Mat. No. DIN EN AISI
    1.2842 90MnCrV8 90MnV8 O2

    Chemical Composition (in weight %)

    C Si Mn Cr Mo Ni V W Others
    0.90 0.25 2.00 0.35 - - 0.13 - -

    Description
    Cold work tool steel with high dimensional stability at heat treatment. Very high resistance to cracking. High machinability, medium thoughness and resistance to wear. 

    Applications
    Measuring tools, machine knives for the wood, paper and metal industry, cold cutting shear blades, thread cutting tools. 

    Physical properties (avarage values) at ambient temperature
    Modulus of elasticity [103 x N/mm2]: 210 
    Density [g/cm3]: 7.85
    Thermal conductivity [W/m.K]: 30.0 
    Electric resistivity [Ohm mm2/m]: 0.35
    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
    12.1 13.3 13.8 14.3 14.1 14.2 14.6

    Continuous Cooling Transformation (CCT) Diagram

    Time-Temperature Transformation (TTT) Diagram

    Soft Annealing
    Heat to 690-720oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 229.

    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 790-820oC followed by oil or warm bath (180-220oC) quenching. Hardness after quenching is 63-65 HRC.

    Tempering
    Tempering temperature: See the data bellow.

    Tempering Temperature (oC) vs. Hardness (HRC)

    100oC 200oC 300oC 400oC 500oC 600oC
    63 60 56 50 42 38

    Tempering Diagram

    Forging
    Hot forming temperature: 1050-850oC. 

    Machinability
    No data.

    Corrosion Resistance 
    Corrosion resistance of this alloy is better than that of plain carbon steels. However it will rust unless given protective treatment.

    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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