Brass is a metal alloy of copper and zinc. Brass is appreciated because of its strength, workability, and resistance to corrosion. Brass's durability is measured using the Mohs hardness scale, which measures hardness from 1 (softest) to 10 (hardest). At 10 is the hardest diamond and at 1 is the softest talc. Brass's hardness is usually rated from 3 to 4, depending on the composition and how the...