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copper nickel tin alloy is used in a wide range of applications, from aerospace parts to industrial equipment. The combination of copper and tin creates an alloy that is durable and corrosion resistant. However, the exact amount of tin and copper that is used in these types of alloys can change their properties. The article below will discuss some of the basics about these alloys and how they can be adjusted to meet specific needs.
Typical copper-nickel-tin (Cu-15Ni-8Sn or Cu-9Ni-6Sn) alloys display good mechanical properties such as strength, hardness and conductivity. These properties are influenced by the microstructure evolution during solidification and the phase composition. Therefore, the development and influencing factors for the formation of discontinuous precipitation of the g phase in these alloys should be researched systematically.
It is well known that the generation of discontinuous g phase precipitates in copper-nickel-tin alloys negatively influences their ductility. This effect can be countered by avoiding numerous generations of the g phase in the alloys. This can be achieved by introducing the metal additives V, Si and Cr in appropriate amounts to the base composition of copper, nickel and tin.
The resulting tin bronze alloy displays superior anti-seizure and low friction properties, high corrosion resistance, excellent embedding capability and high fatigue strength, all of which can contribute to reducing production interruptions due to sucker rod coupling failures. It also has the advantage of being non-magnetic and has excellent anti-galling properties, making it a suitable alternative to nickel alloys and beryllium coppers.