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.311 hole in 4140 that needs heat treating

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.311 hole in 4140 that needs heat treating
TomG Offline
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#6
03-01-2016, 10:27 AM
Yes Darren, the box is opened before the part is quenched in oil. There is already adequate carbon in 4140, so adding charcoal isn't necessary.

Tom
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RE: .311 hole in 4140 that needs heat treating - by TomG - 03-01-2016, 10:27 AM



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