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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Help with cleaning barrel
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<blockquote data-quote="Hugnot" data-source="post: 2551187" data-attributes="member: 115658"><p>Black film in stainless barrel subject to heat?</p><p></p><p>"It means that stainless steel's most prominent stainless property is corrosion resistance, which results from its ability to form and regenerate a chromium oxide layer in the presence of oxygen. However, stainless steel does not provide corrosion resistance below the oxide layer. As a result, once corrosion initiates, it progresses rapidly.</p><p></p><p>Heat tints occur because the oxygen in an active gas or the atmosphere forms a heavy oxide layer, consuming the chromium that is immediately below the top surface layer. Layers that have a silver to straw color are good, while heavier layers that progress from a purple/bluish tint to a gray/black tint are not so good."</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2551187, member: 115658"] Black film in stainless barrel subject to heat? "It means that stainless steel's most prominent stainless property is corrosion resistance, which results from its ability to form and regenerate a chromium oxide layer in the presence of oxygen. However, stainless steel does not provide corrosion resistance below the oxide layer. As a result, once corrosion initiates, it progresses rapidly. Heat tints occur because the oxygen in an active gas or the atmosphere forms a heavy oxide layer, consuming the chromium that is immediately below the top surface layer. Layers that have a silver to straw color are good, while heavier layers that progress from a purple/bluish tint to a gray/black tint are not so good." [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Help with cleaning barrel
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