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Downeast · February 4, 2013, 08:48 PM

Actually Rhodium as deposited is about 800 knoop hardness. I know because we had to test it.This is approximately equal to 63 Rockwell "C". Hard Chrome is typically 65-70 Rockwell "C", so Rhodium does get close to chrome hardness. As a member of the Platinum group it also has excellent corrosion resistance. The problem with it, as mentioned is it's just so damn expensive. Really not a great choice for a gun finish unless you have the money of an Arabian oil sheik or similar income.

February 4, 2013, 08:48 PM	#11
Downeast Member Join Date: August 8, 2012 Posts: 24	Actually Rhodium as deposited is about 800 knoop hardness. I know because we had to test it.This is approximately equal to 63 Rockwell "C". Hard Chrome is typically 65-70 Rockwell "C", so Rhodium does get close to chrome hardness. As a member of the Platinum group it also has excellent corrosion resistance. The problem with it, as mentioned is it's just so damn expensive. Really not a great choice for a gun finish unless you have the money of an Arabian oil sheik or similar income.