In my opinion Vickers is not the most applicable method for this, but the ivory tower people like it. They are calling out "tempered steel" to be approximately 55 HRc and this gold composite to be comparable to around 70 HRc.
-AJ
It's the addition of boron carbide to the gold which makes the difference. So my question is: is this boron carbide only able to be dissolved in gold or can it be added to steel? I've always wondered what would happen if you added sub micron diamonds to steel.
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