Special Brass Is Classified As:

Lead brass: Lead is actually insoluble in brass and is distributed as a free particle at grain boundaries. Lead brass has α and (α+β) according to its structure. Alpha lead brass can only be cold deformed or hot extruded due to the large harmful effect of lead and low plasticity at high temperature. (α+β) lead brass has good ductility at high temperature and can be forged.

Tin brass: the addition of tin in brass can significantly improve the heat resistance of alloy, especially the ability to improve the corrosion resistance of seawater, so tin brass is called "navy brass".

Manganese brass: Manganese has greater solubility in solid brass. The strength and corrosion resistance of the alloy can be significantly improved without decreasing the ductility by adding 1% ~ 4% manganese into brass.

Iron brass: iron brass, iron to iron rich phase particles precipitation, as crystal nucleus and refined grain, and can prevent recrystallization grain growth, so as to improve the mechanical properties and process properties of the alloy.

Nickel brass: Nickel and copper can form a continuous solid solution, significantly expanding the α phase region. The corrosion resistance of brass in air and sea water can be improved by adding nickel. Nickel can also increase the recrystallization temperature of brass and promote the formation of finer grains.

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