Iron brass
In iron brass, iron precipitates as iron-rich particles, which serve as crystal nuclei to refine grains and prevent recrystallized grains from growing, thus improving the mechanical and technological properties of the alloy. The iron content in iron brass is usually below 1.5%, and its structure is (α+β), which has high strength and toughness, good plasticity at high temperature and deformation in cold state. Commonly used brand is Hfe59-1-1.
nickel silver
Nickel and copper can form a continuous solid solution, which significantly enlarges the α phase region. Adding nickel to brass can significantly improve the corrosion resistance of brass in the atmosphere and seawater. Nickel can also increase the recrystallization temperature of brass and promote the formation of finer grains.
HNi65-5 nickel brass has single-phase α structure, which has good plasticity at room temperature and can be deformed in hot state, but the content of impurity lead must be strictly controlled, which will seriously deteriorate the hot workability of the alloy.
