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Product Details
CuSn10 Bronze Casting

CuSn10 Bronze Casting is a high-tin bronze specified under ISO 1338 CuSn10, containing nominally 90% copper and 10% tin. This alloy is the ISO designation for unleaded high-tin bronze, delivering excellent hardness, wear resistance, and load-bearing capacity for gears, bearings, and heavy engineering applications. Indicative price: US$ 10.00/kilogram.
CuSn10 Chemical Composition (ISO 1338)
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | rem | — |
| Tin (Sn) | 9.0 | 11.0 |
| Phosphorus (P) | 0.01 | 0.40 |
| Lead (Pb) | — | 0.10 |
| Zinc (Zn) | — | 0.10 |
CuSn10 Mechanical Properties (Sand Cast – ISO 1338)
| Property | Value |
|---|---|
| Tensile Strength | 270 MPa min |
| Yield Strength (0.2%) | 140 MPa min |
| Elongation | 8% min |
| Brinell Hardness | 85 HB typical |
| Density | 8.77 g/cm³ |
International Equivalents of CuSn10
| Standard | Designation | Common Name |
|---|---|---|
| ISO 1338 | CuSn10 | Tin Bronze |
| Europe – EN 1982 | CC490K | CuSn10 |
| Germany – DIN | 2.1050 | CuSn10 |
| UK – BS 1400 | PB1 | Phosphor Bronze |
| USA – UNS | C90700 | Tin Bronze (89-11) |
| Japan – JIS H5111 | CAC402 | Tin Bronze |
Typical Applications
CuSn10 bronze castings are used for: gears and worm wheels, high-load bearings, bridge bearings, pump impellers, piston rings, and industrial machinery components requiring high wear resistance.

































































