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High wear material

  • 1.  High wear material

    Pune Chapter Admin
    Posted 02-24-2021 00:56
    what is the best microstructure for 25 Cr 2.5 C white cast iron.
    Also suggest suitable composition and heat treatment

    Rahul Gupta
    Managing Director
    N D Gupta Enterprises

  • 2.  RE: High wear material

    India Chapter Admin
    Posted 02-25-2021 03:58
    Good Day Mr Rahul Gupta! I will attempt to answer your question. The microstructure for this should be a complex Fe,Cr carbides in am austenitic/martensitic matrix. It should not have a continuous network of carbides. and it should not show pearlite formation, it should not have graphite visible.

    Vivek Singal

  • 3.  RE: High wear material

    Pune Chapter Admin
    Posted 02-27-2021 06:09
    Thanks for the reply Vivek.
    We following this.

  • 4.  RE: High wear material

    Posted 02-26-2021 10:39
    Greetings ,  we produce a large tonnage of Abrasive Resistance -  Wear Resistance White Cast Irons.  BS4844 Specification or ASTM Specifications and many others are available. your requirement is in the 23/28% Cr, 2.4/2.8 %C, 0.5/1.0% Si, 0.5/1.0 % Mn. operate with a 10:1 ratio Cr:C. this will give a suitable Microstructure. As cast BHN is 400/450. heat treatment to soften for machining should take you to 350BHN. hardening for best wear / abrasion resistance will give 600BHN. we melt in coreless induction furnaces, medium frequency. anneal @ 750-800Cfor 1 hour/25mm, furnace cool to 600C, then air cool to ambient temperature. harden heat slow to1000C soak for 1hr /25mm max section. complex section may need stress relieve or temper. BHN > 600. hope this helps you. microstructure  : eutectic and pro- eutectoid carbide in a predominantly martensitic matric.
    regards, Brian Seviour.  ​

    Brian George Seviour
    BG Consulting
    (082) 416-2456