In the ammunition industry, manufacturers constantly monitor brass sales to determine price and supply trends across many parts of the world. While different variants of brass can be used in shells and casings, the most in demand type is cartridge brass. Given the UNS code C26000, this high-strength and versatile alloy is made with 70% copper and 30% zinc.
Analyses of Cartridge Brass
Spectroscopy is used to determine the quality and strengths of cartridge brass. In recent years, newer spectroscopic tools have been discovered not only for assessing the quality of the alloy, but also determining its sources by geographic region. These processes then allow manufacturers to find the best material for the highest quality ammunition for sport or military use.
Many manufacturers follow the traditional style of drawing. From brass rods, each cartridge case is drawn and stretched to become thinner and longer. The piece is then cut to size then pressed to harden and strengthen it.
Another method is extruding, in which brass is heated to workable temperatures, then pushed through a cylindrical mold or die under high pressure to form a case. After the final shape of the cartridge case is achieved, the pieces are then washed and further processed before undergoing quality control.
The munitions industry is constantly growing, with ammo makers ranging from small assembly lines to massive producers. Demand for the best quality brass sales is expected to increase in the near future and beyond.