Message:

<p>[QUOTE=&quot;NSP, post: 7822445, member: 74849&quot;]This sounds vaguely familiar, but I can’t quite remember the details. However, this article goes through how alloying elements can affect the hardness and ductility of silver:</p><p><br /></p><p><a href="https://www.riogrande.com/article?name=MetalHardnessSilver" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.riogrande.com/article?name=MetalHardnessSilver" rel="nofollow">https://www.riogrande.com/article?name=MetalHardnessSilver</a></p><p><br /></p><p>The article includes the following graph of hardness versus copper content (taken from <i>Silver: Economics, Metallurgy and Use):</i></p><p><i><br /></i></p><p><i>[ATTACH=full]1344278[/ATTACH] </i></p><p><i><br /></i></p><p>They mention that this is hardness for annealed silver, so it may not be a perfect approximation for a coin (since the striking process would introduce some work hardening), but the .900 fine silver is around 80 HV while pure silver (essentially .999 fine) is around 35 HV.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in