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  • Users: CastMetal
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  1. CastMetal

    Acceptable Heat Treatment Warpage

    Recently had a 8"x8"x3" (milled down from a larger size) H-13 tool steel block with a 3"x2"x1" pocket machined out of it sent out for heat treat. It was hardened to ~40 HRC from 30 HRC. All surfaces came back out ~.005". Question is what do you consider an acceptable amount of warpage? With...
  2. CastMetal

    Effects of Temperature on Burnout

    The situation is this, An alloy containing magnesium begins to lower its magnesium content when heated above 1166 deg F (magnesium ignition temperature) When said alloy is heated above this temperature (1500-1700F) what are the effects on the rate of loss of magnesium? Is it a marginal...
  3. CastMetal

    AL alloy Liquid Density

    Does anyone know of a place to find liquid density of various alloys? Specifically AL 6061 in this case. If not any good ideas on how to measure it more precisely than simply marking a level on a ladle and finding final weight of an ingot poured at that level?
  4. CastMetal

    Caliper Selection

    Hi All, Looking for Suggestions for Digital calipers, +-.0005 accuracy 8" maximum measurement. Any trusted brands or preferences on specs. $200 price range digital output a plus.

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