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  1. MechEracing

    Hard Surfacing Valve Seat w/PTAW Process Low Hardness (CoCr Filler)

    I'm working on qualifying a weld procedure for hard surfacing of a valve and running into some hardness concerns. Base Material for weld procedure: Q&T 4340 Process: PTAW Auto Filler Material: Cobalt-Chrome based powder C: 1.58, Mn: .42, Si: 1.50, Cr: 26.79, Ni: 2.26, W: 4.40, Fe: .50, Co: Bal...
  2. MechEracing

    Help Determining Cast Material

    Thanks for the help. The chemistry matches up with ASTM A532 IIB. I never thought to look in the cast iron section of the UNS book for whatever reason.
  3. MechEracing

    Help Determining Cast Material

    We are looking to replace some old cast pieces in one of our heat treat ovens. I haven't been able to locate the original specs on the part. We ran an Arcmet and Xmet analysis on the material to narrow down the material type. However, I haven't been able to cross-reference it with anything...

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