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Post Reply - More Scans of The Green Finish On M1 Carbines |
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Topic - More Scans of The Green Finish On M1 Carbines Posted: Nov 17 2021 at 8:05am By New2brass |
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Parco-Lubrite did have copper in their parkerizing solution, this is what lead to lower temperatures needed for the process. Park does display different shades on different compositions of metal as well over time in the batch. In the mornings it was found that the acidity climbed. The copper helped reduce the swing. I believe the addition of copper actually creates a blacker finish, but not positive. I believe the receivers were 4140, which is composed of
From your other post I replied
then looking closer there were some interesting elements which lead me to ask if the sample was cleaned to eliminate residual items Blackfish, what do you think of the presence of Titanium Tungsten Potassium Bismuth Rubidium all in addition to the said copper?
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