1. CuSn6 - UNS.C51900 Phosphor Bronze Strips
C51900 Details & Applications
CuSn6 - UNS.C51900 Phosphor Bronze Alloys, which is a 6% tin bronze distinguished by a very good combination of strength and electrical conductivity. It is used for connector and current-carrying springs in contacts. Among the 4-8% tin bronze C51900 exhibits a high electrical conductivity, the highest reachable strength is significantly higher than C51100 and C51000. By means of an additional further tempering after the cold forming process the bendability can be further improved.
Its adequate conductivity makes it particularly interesting for springy conductive components. It is wear-resistant, has very good corrosion resistance and can be readily soldered. Due to the higher strength and springiness and good workability, C51900 is used for all types of springs as well as for flexible metal hoses. In addition, it is applied in the paper, pulp, textile and chemical industries, as well as in shipbuilding, mechanical engineering and process equipment manufacture.
Chemical Composition for C51900 Phosphor Bronze Alloys
Sn: 5.50-7.00%
P: 0.03-0.35%
Zn: 0.30% Max.
Fe: 0.10% Max.
Pb: 0.05% Max.
Zn: Balance
Note: Copper plus additions equal 99.50% minimum.
2. CuSn8 - UNS.C52100 Phosphor Bronze Strips
C52100 Details & Applications
CuSn8 - UNS.C52100 Phosphor Bronze Alloys, which is a 8% tin bronze distinguished by a very good combination of strength and electrical conductivity. It is used for connector and current-carrying springs in contacts. Among the 4-8% tin bronze C52100 exhibits the lowest electrical conductivity, the highest reachable strength is significantly higher than C51100 and C51000 and C51900. By means of an additional further tempering after the cold forming process the bendability can be further improved.
In addition, it has better corrosion resistance and good sliding properties. C52100 is used for springy components and sliding elements when increased strength and wear-resistance are required.
Chemical Composition for C51900 Phosphor Bronze Alloys
Sn: 7.50-8.50%
P: 0.03-0.35%
Zn: 0.20% Max.
Fe: 0.10% Max.
Pb: 0.05% Max.
Zn: Balance
Note: Copper plus additions equal 99.50% minimum.