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Rifles, Reloading, Optics, Equipment
Reloading
Salt Bath Annealing Doesn't Work! by AMP
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<blockquote data-quote="J E Custom" data-source="post: 1637529" data-attributes="member: 2736"><p>This is not based on any study because brass cartridge cases don't need to be stress relieved, only annealed. The alloy is such that cartridge cases need to be malleable in order to be shaped/sized to fit your chamber. They don't have or need the tinsel strength to withstand the chamber pressures. Basically, they are containers with a low yield strength. If you changed the alloy the yield strength could go up or down rendering the case unusable.</p><p></p><p>Normally tumbling, polishing does not effect hardness, only sizing, firing or reshaping (Wildcatting) the reason for annealing is to keep the case in a malleable state in certain areas. If it becomes to hard, it will fail because it is no longer malleable and will crack in most cases.</p><p></p><p>If you tried to bake the brass, it would not change unless you reached annealing temperatures, then you would anneal the entire case rendering it useless. The neck and shoulder area are the normal areas that need annealing, and the rest of the case can remain stronger and</p><p>support the rest of the case and the pressure to a point.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1637529, member: 2736"] This is not based on any study because brass cartridge cases don't need to be stress relieved, only annealed. The alloy is such that cartridge cases need to be malleable in order to be shaped/sized to fit your chamber. They don't have or need the tinsel strength to withstand the chamber pressures. Basically, they are containers with a low yield strength. If you changed the alloy the yield strength could go up or down rendering the case unusable. Normally tumbling, polishing does not effect hardness, only sizing, firing or reshaping (Wildcatting) the reason for annealing is to keep the case in a malleable state in certain areas. If it becomes to hard, it will fail because it is no longer malleable and will crack in most cases. If you tried to bake the brass, it would not change unless you reached annealing temperatures, then you would anneal the entire case rendering it useless. The neck and shoulder area are the normal areas that need annealing, and the rest of the case can remain stronger and support the rest of the case and the pressure to a point. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Salt Bath Annealing Doesn't Work! by AMP
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