Tin bronze density specific gravity ρ (8.82). Bronze can be divided into two categories: tin bronze and special bronze (ie Wuxi bronze). For casting products, add the word “Z” before the code, such as: Qal7 means that the aluminum content is 5%, and the rest is copper. Copper casting tin bronze Tin bronze is a copper-tin alloy with tin as the main element, also known as tin bronze. When the tin content is less than 5~6%, tin dissolves in copper to form a solid solution, and the plasticity increases. When the amount is greater than 5~6%, the tensile strength decreases due to the appearance of Cu31sb8-based solid solution, so the tin content of the scale tin bronze is mostly between 3~14%. When the tin content is less than 5%, it is suitable for cooling. Deformation processing, when the tin content is 5-7%, it is suitable for hot deformation processing. When the tin content is more than 10%, it is suitable for casting. Since the potentials of a and & are similar, and the tin in the composition is nitrided to form a dense tin dioxide film, the corrosion resistance of the atmosphere and seawater is improved, but the acid resistance is poor. Because tin bronze has a wide crystallization temperature range and poor fluidity, it is not easy to form concentrated shrinkage holes, but it is easy to form dendrite segregation and dispersed shrinkage holes. Complex shape. The conditions of large wall thickness are not suitable for castings requiring high density and good sealing. Tin bronze has good anti-friction, anti-magnetic and low temperature toughness.
Post time: May-25-2022