Product
Product Details
PB2 Bronze Alloy Casting
PB2 Bronze Alloy Casting is a high-tin phosphor bronze specified under BS 1400 PB2, containing nominally 85% copper, 14% tin, and controlled phosphorus. PB2 is the highest-tin standard British casting alloy, providing maximum hardness and exceptional wear resistance for the most demanding worm gear and high-load bearing applications. Indicative price: US$ 11.50/kilogram.
PB2 Chemical Composition (BS 1400)
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | 83.0 | 87.0 |
| Tin (Sn) | 12.5 | 15.0 |
| Phosphorus (P) | 0.10 | 0.50 |
| Lead (Pb) | — | 0.10 |
| Zinc (Zn) | — | 0.10 |
| Iron (Fe) | — | 0.10 |
PB2 Mechanical Properties (Sand Cast – BS 1400)
| Property | Value |
|---|---|
| Tensile Strength | 280 MPa min |
| Yield Strength | 175 MPa min |
| Elongation | 3% min |
| Brinell Hardness | 95 HB typical |
| Density | 8.67 g/cm³ |
International Equivalents of PB2 Bronze
| Standard | Designation | Common Name |
|---|---|---|
| UK – BS 1400 | PB2 | High Tin Phosphor Bronze |
| USA – UNS | C91100 | High Tin Bronze (84-16) |
| Europe – EN 1982 | CC492K | CuSn11Pb2 |
| Germany – DIN | 2.1060 | CuSn14 |
| ISO 1338 | CuSn12 | High Tin Bronze |
| Japan – JIS H5111 | CAC403 | High Tin Bronze |
Typical Applications
PB2 high-tin phosphor bronze alloy castings are used for: worm gear wheels against hardened steel worms, heavy-duty slow-speed gears, bridge bearings and expansion plates, extreme pressure bearing applications, and specialized wear-resistant components.