cartridge brass


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cartridge brass

[′kär·trij ‚bras]
(metallurgy)
An alloy containing 70% copper and 30% zinc; uses include cartridge cases, automotive radiator cores and tanks, lighting fixtures, eyelets, rivets, springs, screws, and plumbing products.
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X 10 cm long 470 Mineral Glasses for Slices Microanalysis (2 X 2 X 12) [mm.sup.3] 478 Cartridge Brass Cube and Cylinder 479a Fe-Cr-Ni Alloy Wafer 480 Tungsten Wafer 20 % Molybdenum 481 Gold-Silver Alloys Six wires 482 Gold-Copper Alloys Six wires 483 Iron--3 % Silicon Small sheet 1871-1875 Glasses for Microanalysis Slices (1872, 1873 in stock) (2 X 2 X 12) [mm.sup.3] 2063a Microanalysis Thin Film Film on 3 mm Cu Mg-Si-Ca-Fe grid 2066 K-411 Glass Microspheres 50 mg of 1 [micro]m to 40 [micro]m diameter spheres 661 AISI 4340 Steel 3.2 mm X 51 mm 662 AISI 84B17 Steel Cr-V rods 663 Steel High-Carbon 664 Steel (Modified) SRM no.
Pressure-tested up to 65,000 psi, it's much stronger than conventional cartridge brass but also approximately 50 percent lighter.
The metal in primer cups is thinner and softer than cartridge brass. As pressure increases the edges of the primer cup flatten and extend further into the primer pocket of the case.
Eventually a mild brass alloy known as gilding metal became standard, containing 5 to 10 percent zinc as compared to around 30 percent for cartridge brass.
"Responding to two Democratic senators representing outraged private gun owners, the Department of Defense announced last night it has scrapped a new policy that would deplete the supply of ammunition by requiring destruction of fired military cartridge brass," World Net Daily reported on March 31.
Then you need to stock cartridge brass. Having a supply of .45-70 brass will keep most BPCR Silhouette shooters happy, because it is the case they squeeze down to make .40-65s.