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Definition:

Brass

An alloy that is 70% copper,30% zinc. One of the most widely used of the copper zinc alloys; malleable and ductile; excellent cold working but poor hot working and machining properties; excellent for soft soldering; good for silver alloy brazing or oxyacetylene welding, but fair for resistance or carbon arc welding. Used for drawn cartridges, tubes, eyelets machine items and snap fasteners.