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    Nitriding and NACE Code MR0175-3-2009

    There appears to be a lack of definition in the NACE code to whether they are talking about "Effective Case Hardening" or "Total Case Hardening". The way nitriding is called out on typical drawings implies "Total Case Hardening" which may not exceed the "Effective Case Hardening". Total case...
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    Nitriding and NACE Code MR0175-3-2009

    Looking at NACE MR0175 Second Edition 2009-10-15, section A.1.5.1, Requirements for overlays, surface treatments, plating, coatings, linings, ect... It it says, "Nitriding with a maximum case depth of 0.15 mm (0.006 in) is an acceptable surface treatment." I would think the metal would have...
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    4130 Steel at HRC 30-35

    All I have found tying 4130 to HRC is the ultimate strength change, and not the yield strength shift.
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    4130 Steel at HRC 30-35

    I am trying to find yield strength and ultimate strength for 4130 steel at Rockwell C 30 to 35. I have an old design that I need to replicate for a much lower strength quickly, and need to verify if the advantage of the heat treatment for hardening is really required for my new application.

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