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<p>[QUOTE=&quot;longnine009, post: 2096488, member: 1886&quot;]The U.S Mint uses tool steel for their dies. Google it and you&#039;ll see tungsten as one of the alloys; an alloy that is strong enough to be used in tank armor. </p><p><br /></p><p>The die only has to be harder than the planchet. Yes, stainless steel is harder than copper or silver. That only means the dies will wear out and fail sooner.&nbsp; They&#039;ll still strike stainless steel coins, until they do fail. Besides, maybe someone&#039;s nephew in Brazil sold tool steel to the mint. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie7" alt=":p" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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