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<p>[QUOTE=&quot;Oldhoopster, post: 3474848, member: 84179&quot;]I did some very very quick and dirty calculations.&nbsp; It appears that the test ball is 1/16&quot;.&nbsp; In order to get a 60 hardness measurement (listed in [USER=77814]@Clawcoins[/USER] post above) the depth of the penetration would only be 0.005&quot;.&nbsp; I didn&#039;t do the math but the dia of the mark would be pretty small as well.&nbsp; I would expect a mark that small to be completely obliterated during the striking process, as Fred mentioned above.</p><p><br /></p><p>It might be a good idea for one of the metallurgical guys to check my math.&nbsp; I&#039;ve done Vickers Indentation tests but never did Rockwell on metals.&nbsp; The small penetration depth makes sense, however.[/QUOTE]</p><p><br /></p>

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