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Old January 18, 2021, 04:58 PM   #16
Senior Member
Join Date: February 16, 2006
Location: IOWA
Posts: 8,250
Galling is worse. .... !!!

I just want to clarify, Is galling, wearing?
Galling is not like your "normal" wear. Galling actually digs into the metal. Ask any pipe fitter or electrician. If you take two dry surfaces of metal and rub them together with some reasonable force, most times they will just show rub marks. If you run the same test on "some" metals, they "catch" and even dig in to a point of damage.

Case in point is aluminum pipe fitting. If you don't lube them, they will gall together. If you are dealing with two dissimilar meatal, you will likely get a pass. Galling is more prevalent when dealing with two surfaces of "identical" metals. Black pipe fitting will probably gall up. .....

Be Safe !!!
'Fundamental truths' are easy to recognize because they are verified daily through simple observation and thus, require no testing.
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