Product
Product Details
CAC407 Bronze Casting
CAC407 Bronze Casting is a high-strength gunmetal specified under JIS H 5111 CAC407 (formerly BC7), containing nominally 87% copper, 10% tin, 1% lead, and 2% zinc. CAC407 provides higher strength and hardness than CAC406, making it suitable for more demanding structural and bearing casting applications. Indicative price: US$ 9.50/kilogram.
CAC407 Chemical Composition (JIS H 5111)
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | rem | — |
| Tin (Sn) | 9.0 | 11.0 |
| Zinc (Zn) | 1.0 | 3.0 |
| Lead (Pb) | 0.5 | 2.0 |
| Nickel (Ni) | — | 1.0 |
| Iron (Fe) | — | 0.20 |
CAC407 Mechanical Properties (Sand Cast – JIS H 5111)
| Property | Value |
|---|---|
| Tensile Strength | 295 MPa min |
| Yield Strength (0.2%) | 145 MPa min |
| Elongation | 12% min |
| Brinell Hardness | 80 HB typical |
| Density | 8.77 g/cm³ |
International Equivalents of CAC407
| Standard | Designation | Common Name |
|---|---|---|
| Japan – JIS H5111 | CAC407 (formerly BC7) | High Strength Gunmetal |
| ISO 1338 | CuSn10 | Tin Bronze |
| Europe – EN 1982 | CC491K | CuSn10Pb2 |
| Germany – DIN | 2.1052 | CuSn10Pb |
| UK – BS 1400 | LG4 / PB1 | Leaded Gunmetal / Phosphor Bronze |
| USA – UNS | C90500 / C92600 | Gun Metal / Leaded Tin Bronze |
Typical Applications
CAC407 gunmetal castings are used for: high-strength marine fittings and propeller hubs, pressure-tight valve bodies, heavy-duty pump casings and impellers, structural engineering castings, bearing housings, and corrosion-resistant fittings for industrial applications.