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Is it good to use tin bronze for copper sleeves?

2023-10-18
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Using tin bronze to make copper sleeves, we first need to understand what tin bronze is, what are its applications, and what are its properties?
Tin bronze is a copper-based alloy with tin as the main alloy element. It is widely used in shipbuilding, chemical industry, machinery, instrumentation and other industries. It is mainly used to manufacture wear-resistant parts such as bearings and bushings, and elastic components such as springs. As well as corrosion-resistant and anti-magnetic parts, it has high strength, elasticity, wear resistance and anti-magnetic properties.
It has good pressure processability in hot and cold states, has high flame resistance to electric sparks, can be welded and brazed, and has good processability. The main brands include ZCuSn6Zn6Pb3, ZCuSn10Pb5, ZCuSn5Zn5Pb5, etc.
Due to different grades, the hardness can sometimes vary greatly.
Pure copper hardness: 35 degrees (Bolling hardness tester)
5~7% tin bronze hardness: 50~60 degrees
9~11% tin bronze hardness: 70~80 degrees
The test force unit of 590HB is in cattle, which is often misleading and this value generally refers to C83600 (35 bronze) or the test force unit in the CC491K national standard is in cattle. When applied, it is multiplied by a coefficient of 0.102. The Brinell hardness of this material is generally around 60. .
Once you understand its materials and performance, you can see if it is suitable according to your own needs.
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