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 the very good abrasion resistance and compressive strength. Bronze-filled PTFE materials are typically used for bearing and wear ring applications.
PBY Material Codes:
PB10800T - 40% Bronze Filled PTFE
PB10800T - 5% Moly 55% Bronze Filled PTFE
Bronze Filled PTFE Properties:
Extremely hard-wearing material
Great deformation strengths
Good thermal conductivity
Extremely good wear properties of any filled PTFE
Bearing and wear rings
Often used in hydraulic systems, particularly superb as linear bearings, e.g. slides, gibs, guide ways
PB10800T meets ASTM D4745 Type I Grade 10 and AMS 3678/14 requirements.
PB10801T meets ASTM D4745 Type I Grade 12.
PB10800T - Material Data Sheet
PB10801T - Material Data Sheet
|Property||Test Method||Units||40 Bronze||5 Moly 55 Bronze|
|Specific Gravity||ASTM D792||-||2.950 - 3.350||3.500 - 4.000|
|Hardness Shore - D||ASTM D2240||-||62 - 72||65 - 75|
|Tensile Strength, min.||ASTM D4745||PSI [MPa]||2,400 [16.5]||1,500 [10.3]|
|Elongation at Break, min.||ASTM D4745||%||100||80|
|Second Melt Peak Temp.||ASTM D3418||°F [°C]||621 ||621 |
|Glass Transition Temp.||ASTM D3418||°F [°C]||-143 [-97]; 246 ||-143 [-97]; 246 |
- 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