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  • Users: sromkee1
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  1. sromkee1

    Is porosity common in 440C rod stock?

    I am (swiss screw) machining some .0469 pins out of 1/8" 440C bar stock, then hardening to 58RC. I have found porosity in the last 2 lots of Carpenter material. Is this a common problem with 440C? I am considering switching to 440A drawn to size (.0469)to eliminate this defect. The yield...

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