Bronze powders are typically produced in a 90% Cu / 10% Sn composition and deliver excellent wear resistance, high thermal conductivity, and high strength.
These properties make bronze powders well-suited for PTFE powders and plastic compounding, as well as for components that demand reliable load‑bearing capability and efficient heat dissipation.
What Is Bronze Filled PTFE Compounding?
In
PTFE compounding, bronze powder is used as a functional filler, typically at 40–60% by weight, to significantly improve the performance of the base polymer. PTFE itself is known for its:
- Excellent chemical resistance
- Very low friction
- Wide operating temperature range
When combined with bronze powder, the resulting composite gains dramatically
enhanced mechanical and thermal properties, making it suitable for demanding applications.
What are the Bronze Powder Benefits for PTFE Compounding?
Pure PTFE is soft and lacks wear resistance under load. Our pure bronze powder reinforces the PTFE matrix and provides performance improvements, including:
- Improved wear resistance for longer service life
- Increased thermal conductivity for better heat dissipation in dynamic applications
- Enhanced compressive strength for handling greater loads
- Reduced creep to minimize long‑term deformation
Typical Properties of Bronze‑Filled PTFE
The table summarizes the typical property changes and advantages when bronze powder is added to PTFE.
| Property |
Description |
Benefits |
| Coefficient of friction |
Still low, but slightly higher than virgin PTFE. |
Improved wear resistance and reduced creep allow reliable performance even with the small increase in friction. |
| Hardness |
Higher than pure PTFE. |
Enhanced compressive strength for handling greater loads and reducing surface deformation. |
| Temperature range |
−200 °C to +260 °C (similar to PTFE). |
Maintains PTFE’s broad operational temperature window while improving heat dissipation through increased thermal conductivity. |
| Chemical resistance |
Slightly reduced compared to virgin PTFE (bronze can oxidize in certain environments). |
Suitable for many industrial environments while gaining mechanical improvements from bronze reinforcement. |