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<p>[QUOTE="Pete Apple, post: 3574600, member: 103982"]Here is copy and paste. I could also forward or send as .pdf to an email address. Here I have blanked out my email.</p><p><br /></p><p>Inquiries <Inquiries@usmint.treas.gov></p><p>Wed 6/19/2019 2:27 PM</p><p><br /></p><p>Dear Mr. Apple,</p><p><br /></p><p><br /></p><p>Thank you for your question concerning the quality of United States Mint dies.</p><p><br /></p><p><br /></p><p>Yes, the United States Mint performs hardness testing on production dies. We use the Rockwell-C hardness scale.</p><p><br /></p><p><br /></p><p>We appreciate your interest and hope this information is helpful.</p><p><br /></p><p><br /></p><p>Sincerely,</p><p><br /></p><p>United States Mint</p><p><br /></p><p><br /></p><p><b>From:</b> Pete Apple <xxxxxxxx.com> </p><p><b>Sent:</b> Wednesday, June 19, 2019 10:29 AM</p><p><b>To:</b> Inquiries <Inquiries@usmint.treas.gov></p><p><b>Subject:</b> Quality of dies question</p><p><br /></p><p><br /></p><p><br /></p><p>Can you tell me if the US Mint does Rockwell Hardness Testing on selected dies before they begin production. If so can you tell me which Rockwell Scales are used? I know that Alloy 52100 for small diameter coins and L6 for quarter on up is used.</p><p><br /></p><p><br /></p><p>Thanks for your help,</p><p><br /></p><p><br /></p><p>Pete Apple[/QUOTE]</p><p><br /></p>
[QUOTE="Pete Apple, post: 3574600, member: 103982"]Here is copy and paste. I could also forward or send as .pdf to an email address. Here I have blanked out my email. Inquiries <Inquiries@usmint.treas.gov> Wed 6/19/2019 2:27 PM Dear Mr. Apple, Thank you for your question concerning the quality of United States Mint dies. Yes, the United States Mint performs hardness testing on production dies. We use the Rockwell-C hardness scale. We appreciate your interest and hope this information is helpful. Sincerely, United States Mint [B]From:[/B] Pete Apple <xxxxxxxx.com> [B]Sent:[/B] Wednesday, June 19, 2019 10:29 AM [B]To:[/B] Inquiries <Inquiries@usmint.treas.gov> [B]Subject:[/B] Quality of dies question Can you tell me if the US Mint does Rockwell Hardness Testing on selected dies before they begin production. If so can you tell me which Rockwell Scales are used? I know that Alloy 52100 for small diameter coins and L6 for quarter on up is used. Thanks for your help, Pete Apple[/QUOTE]
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