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  1. Rnel

    Brittle fracture of metal stamped part

    I have a metal stamped part with two 90° bends. Material thickness is 0.070”, material type is S55C, heat treated (Austempered) to HRC 45. The part is then deburred and plated – Yellow Zinc per ASTM B633 Type 2, FeZn5. The part is experiencing brittle fracture through one of the 90° bends at...

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