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  1. thinksmall

    4340 hardening processes

    What reference can I check to find out what the hold period should be for the normalizing? Will the hold period depend of the size/mass of the parts?
  2. thinksmall

    4340 hardening processes

    My company uses rings (1.6" OD x 1.4" ID x 0.5" W) made from 4340 HTSR as targets for an inductive type proximity sensor. The rings are machined from HTSR bar (HRC ~35). We are experiencing problems with electrical runout. Our theory is that non-uniform structures generated during the quench...

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