Bronze is the most popular metallic PTFE filler. Bronze is an alloy of copper and tin, so it is attacked by acids and bases. Also, bronze oxidizes during the sintering process, but this has no influence on the quality of the compound.
Bronze is used in high amounts to increase the thermal conductivity and reduce the deformation under load when bronze-filled PTFE materials are subjected to load at extreme temperatures. Bronze-filled PTFE materials have very good abrasion resistance and compressive strength. Bronze-filled PTFE materials are typically used for bearing and wear ring applications.
PBY Material Codes:
PB10800 - 40% Bronze-Filled PTFE
PB10801 - 5% Moly 55% Bronze-Filled PTFE
PB10802 - 60% Bronze-Filled PTFE
Bronze-Filled PTFE Spec. Summary
|Property||Test Method||Units||60 BRONZE||40 Bronze||5 Moly 55 Bronze|
|Specific Gravity||ASTM D792||-||3.850 - 4.154||2.950 - 3.350||3.500 - 4.000|
|Hardness Shore - D||ASTM D2240||-||65 - 75||62 - 72||65 - 75|
|Tensile Strength, min.||ASTM D4745||PSI [MPa]||1,800 ||2,400 [16.5]||1,500 [10.3]|
|Elongation at Break, min.||ASTM D4745||%||50||100||80|
|Second Melt Peak Temp.||ASTM D3418||°F [°C]||621 ||621 ||621 |
|Glass Transition Temp.||ASTM D3418||°F [°C]||-143 [-97]; 246 ||-143 [-97]; 246 ||-143 [-97]; 246 |
Material Available In:
Bronze-Filled PTFE Rods
Bronze-Filled PTFE Tubes
Bronze-Filled PTFE Sheets
Bronze-Filled PTFE Material Properties
Extremely hard-wearing material
Great deformation strengths
Good thermal conductivity
Extremely good wear properties of any filled PTFE
Typical Applications for Bronze-Filled PTFE
Bearing and wear rings
Often used in hydraulic systems, particularly superb as linear bearings, e.g., slides, gibs, guide ways
Bronze-Filled PTFE Requirements
PB10800 meets ASTM D4745 Type I Grade 10 and AMS 3678/14 requirements.
PB10801 meets ASTM D4745 Type I Grade 12 requirements.
PB10802 meets ASTM D4745 Type I Grade 11 and AMS 3678/6 requirements.
Bronze-Filled PTFE Material Data Sheet Downloads
PB10800 - Material Data Sheet
PB10801 - Material Data Sheet
PB10802 - Material Data Sheet
Bronze-Filled PTFE Spec. Compliance
- Wypych, George. Handbook of Polymers. 2nd Ed., ChemTec/Publishing, 2016.
- Ebnesjjad, Sina. Fluoroplastics Vol1 & Vol2. 2nd Ed., Elsevier Inc., 2015.
- Aerospace Materials Specifications for PTFE materials (AMS3678)
- American Society for Testing and Materials (ASTM) Standards