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Rifles, Reloading, Optics, Equipment
Gunsmithing
Back Spindle Spider
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<blockquote data-quote="Trickymissfit" data-source="post: 832763" data-attributes="member: 25383"><p>8620 is a mild hot roll steel. Machines much better than CRS. If memory is right it has a little sulphur in it to aid in machining. Downside like cold roll steel is that it will not harden without carbon being injected into the surface of the metal. yet 8620 is not gummy to machine like CRS. 70% of my mild steel machine work was done with 8620, as it was just that good.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 832763, member: 25383"] 8620 is a mild hot roll steel. Machines much better than CRS. If memory is right it has a little sulphur in it to aid in machining. Downside like cold roll steel is that it will not harden without carbon being injected into the surface of the metal. yet 8620 is not gummy to machine like CRS. 70% of my mild steel machine work was done with 8620, as it was just that good. gary [/QUOTE]
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