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38NiCrMov7-3/38NiCrMov7-7 material

  1. Mar 10, 2016 #1
    In material 38NiCrMov7-3 what is "3" Indicating.
    And any one have properties of 38NiCrMov7-7 material.
  2. jcsd
  3. Mar 10, 2016 #2


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    38 Ni Cr Mo V 7 - 3 indicates Ni 7%, Cr 3%
    Changing to 38 Ni Cr Mo V 7 - 7 increases the Cr from 3% to 7%.
    You need to find out why Cr is changed in that alloy.
    It may be changed for reason of machineability, casting characteristics, thermal or corrosion resistance, etc.
  4. Mar 10, 2016 #3
    Hi..Baluncore Thank you.

    For 38NiCrMoV7 -7, i have try to find some stuff on internet but not getting anything. Is their any equivalent material for 38NiCrMoV7-7.
  5. Mar 11, 2016 #4


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    The very rare 38 NiCrMoV 7-7, and the more common 38 NiCrMoV 7-3, are a European DIN standard specification.
    You should probably contact a company such as Böhler for further information.

    Are you able to identify and contact a manufacturer of 38 NiCrMoV 7-7 ?
    There will be equivalents in other standards to 38 NiCrMoV 7-3 but probably not for 38 NiCrMoV 7-7.
  6. Mar 11, 2016 #5

    We are still looking for manufacturers of same. We are using this material in power transmission in pump. And working temperature should be 100 degree and continuously submerged in oil.
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