Brass is the most well-known alloy made by copper with different proportions of zinc. It is the alloy that has been in the service of mankind most since the Bronze Age (M.6 3000 - 1200). In the elapsed time, very different mechanical properties have been obtained by adding trace amounts of lead (Pb) to the alloy, other than zinc, or by changing the copper (Cu) - zinc (Zn) ratios. For example, the brass alloy containing 58% copper, called MS58, is not suitable for machining in this state, so it can be easily removed with approximately 1-2% Pb doves. However, the same alloy cannot be made into a plate due to its hardness and brittleness, and the copper ratio for plate production is increased to 70%. In addition to brass, some bronze alloys are also obtained by adding nickel (Ni) and/or aluminum (Al) to the copper-zinc pair.

SPECIFIC WEIGHT: 8.43 gr/cm3
BRINELL HARDNESS: 90 (annealed)