Bronze Filled PTFE
The bronze filler in PTFE is mostly 40% or 60%. The Bronze-filled PTFE can be in rod, sheet and tube shapes.
Welcome to Learning About Bronze Filled PTFE
Bronze-filled PTFE increases hardness and compressive strength while also increasing thermal and electrical conductivity. The addition of Bronze to PTFE gives better dimensional stability and lowers creep, cold flow and wear. This material also has excellent abrasion resistance and compressive strength.
Bronze is the most popular metallic PTFE filler. Bronze is used in PTFE in high amounts (40% to 60%) to increase thermal conductivity and reduce deformation under load when bronze-filled PTFE material is subjected to load at extreme temperatures.
Advantages
- Extremely good wear properties of any filled PTFE
- Extremely hard-wearing material
- Great deformation strengths
- Good thermal conductivity
- Electrically conductive
Applications
Bronze-filled PTFE is an extremely versatile material. It is typically used for bearing and wear ring applications. We also use the material to produce backup rings, high-performance seals and other parts.
Physical Properties of Bronze Filled PTFE
| Test Items | Test Methods | Unit | 40% Bronze | 60% Bronze |
|---|---|---|---|---|
| Density | ASTM D792 | g/cm3 | 3.2 | 3.8 |
| Hardness Shore D | ASTM D2240 | Sh.D | 65 | 67 |
| Tensile strength | ASTM D638 | mpa | 19 | 18 |
| Elongation at break 23°C | ASTM D638 | % | 290 | 260 |
| Coefficient of dynamic friction | ASTM D1894 | - | 0.07 | 0.09 |
| Max water absorption | ASTM D570 | % | 0 | 0 |
| Working temperature | - | °C | -200 to 260 | -200 to 260 |
