Mechanical properties of brass

Due to different zinc content in brass, mechanical properties are not the same, brass mechanical properties with different zinc content and change. For α brass, σ B and δ increase with the increase of zinc content. For (α+β) brass, the strength at room temperature increases when the zinc content is increased to about 45%.

If the zinc content is further increased, the strength of the alloy decreases sharply due to the appearance of a more brittle R phase (solid solution based on Cu5Zn8 compound) in the microstructure. The ductility of (α+β) brass decreases with increasing zinc content. Therefore, copper-zinc alloys containing more than 45% zinc have no practical value.

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