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Product Details
CuSn12 Bronze Casting
CuSn12 Bronze Casting is a high-tin bronze specified under ISO 1338 CuSn12, containing nominally 88% copper and 12% tin. CuSn12 is used where maximum hardness and wear resistance are required among standard ISO tin bronzes, particularly for heavy-duty worm gears and extreme-pressure bearings. Indicative price: US$ 11.00/kilogram.
CuSn12 Chemical Composition (ISO 1338)
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | rem | — |
| Tin (Sn) | 11.0 | 13.0 |
| Phosphorus (P) | 0.01 | 0.40 |
| Lead (Pb) | — | 0.10 |
| Zinc (Zn) | — | 0.10 |
CuSn12 Mechanical Properties (Sand Cast – ISO 1338)
| Property | Value |
|---|---|
| Tensile Strength | 280 MPa min |
| Yield Strength (0.2%) | 155 MPa min |
| Elongation | 5% min |
| Brinell Hardness | 92 HB typical |
| Density | 8.65 g/cm³ |
International Equivalents of CuSn12
| Standard | Designation | Common Name |
|---|---|---|
| ISO 1338 | CuSn12 | High Tin Bronze |
| Europe – EN 1982 | CC492K | CuSn11Pb2 |
| Germany – DIN | 2.1060 | CuSn14 |
| UK – BS 1400 | PB2 | High Tin Phosphor Bronze |
| USA – UNS | C91100 | High Tin Bronze (84-16) |
| Japan – JIS H5111 | CAC403 | Tin Bronze |
Typical Applications
CuSn12 bronze castings are used for: heavy-duty worm gear wheels, maximum-load slow-speed bearings, bridge expansion plates, specialized wear parts in mining and steel industries, and high-pressure hydraulic pump components.