PB1 (Phosphor Bronze)
PB1 Phosphor Bronze is a copper, tin and phosphorus alloy known for good strength, wear resistance and corrosion resistance. It is commonly used for gears, bearings, heavy load bushes and other industrial bronze components.
- Description
- Product Specifications
Description
PB1 Phosphor Bronze, also known as tin bronze, is designed for applications where durability, bearing performance and resistance to wear are important. The tin content supports corrosion resistance and strength, while phosphorus improves stiffness and wear resistance.
This alloy is commonly supplied in cast form and is suitable for industrial components such as gears, bearings and heavy load bushes. It is also used across applications such as bushings, shafts, gears, thrust washers, valve parts and other wear-resistant components.
Key Features:
- Copper, tin and phosphorus bronze alloy
- Good wear resistance
- Good corrosion resistance
- Suitable for heavy load applications
- Commonly used for gears, bearings and bushes
- Machinability rating of 30
- Available in cast form
- Suitable for industrial bronze components
| Element | Composition | Nominal |
|---|---|---|
| Copper (Cu) | Balance | 87.7% |
| Tin (Sn) | 10.2-11.5% | 11% |
| Phosphorus (P) | 0.6-1.0% | 1% |
| Lead (Pb) | 0.25% max | 0.2% |
| Zinc (Zn) | 0.05% max | – |
| Nickel (Ni) | 0.10% max | 0.1% |
| Iron (Fe) | 0.10% max | – |
| Cu + Named Elements | 99.5% min | – |
| Cast Type | Tensile Strength | Yield Strength | Elongation | Brinell Hardness |
|---|---|---|---|---|
| Continuous Cast | 360 MPa | 170 MPa | 8% | 80 HB |
| Centrifugal Cast | 340 MPa | 170 MPa | 7% | 80 HB |
| Density | 8.8 g/cm³ at 20°C |
|---|---|
| Specific Gravity | 8.8 |
| Machinability Rating | 30 |
| Stress Relieve Temperature | 260°C |
| Maximum Work Temperature | 250°C |
| Common Temper | Cast |
| Applicable Specifications | AS 90710, BS 1400 PB1, UNS C90710, SAE 65 and BS EN CC481K |
| Typical Uses | Gears, bearings and heavy load bushes |
