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<p>[QUOTE=&quot;GSDykes, post: 2255165, member: 73321&quot;]This link takes you to a page which demonstrates the simple math used to calculate the SG for alloys. There are various methods (as Kurt shared with me his preferred method), this method below uses the &quot;reciprocal&quot; method:</p><p><br /></p><p><a href="http://www.tmtpages.com/specific-gravity.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.tmtpages.com/specific-gravity.htm" rel="nofollow">www.tmtpages.com/specific-gravity.htm</a></p><p><br /></p><p>Believe me, going out to 5 or even 6 decimal places can increase accuracy!</p><p>Also below (again) the link to my 12 page paper on World Coin Alloys and Their Specific Gravities - (which is always available and up to date)</p><p><br /></p><p><a href="http://www.Biblical-data.org/GSDykes_specific_gravity_tests.pdf" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.Biblical-data.org/GSDykes_specific_gravity_tests.pdf" rel="nofollow">www.Biblical-data.org/GSDykes_specific_gravity_tests.pdf</a></p><p><br /></p><p>Gary in Washington[/QUOTE]</p><p><br /></p>

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