Product
Product Details
CAC403 Bronze Casting
CAC403 Bronze Casting is a high-tin bronze specified under JIS H 5111 CAC403 (formerly BC3), containing nominally 88% copper and 12% tin. It provides the highest hardness among standard JIS tin bronze casting alloys, used for demanding worm gear and heavy bearing applications in Japanese industrial machinery. Indicative price: US$ 11.00/kilogram.
CAC403 Chemical Composition (JIS H 5111)
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | rem | — |
| Tin (Sn) | 11.0 | 13.0 |
| Zinc (Zn) | — | 1.0 |
| Lead (Pb) | — | 0.50 |
| Phosphorus (P) | 0.05 | 0.30 |
| Iron (Fe) | — | 0.10 |
CAC403 Mechanical Properties (Sand Cast – JIS H 5111)
| Property | Value |
|---|---|
| Tensile Strength | 295 MPa min |
| Yield Strength (0.2%) | 160 MPa min |
| Elongation | 5% min |
| Brinell Hardness | 95 HB typical |
| Density | 8.65 g/cm³ |
International Equivalents of CAC403
| Standard | Designation | Common Name |
|---|---|---|
| Japan – JIS H5111 | CAC403 (formerly BC3) | High Tin Bronze |
| 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) |
Typical Applications
CAC403 high-tin bronze castings are used for: worm gear wheels against hardened steel worms, maximum-hardness bearings, bridge expansion bearings, heavy industrial machinery gears, piston rings, and wear-resistant components in steel mill and mining equipment.