40% Bronze (60% Virgin PTFE + 40% Bronze)

 

 

This material offers an excellent combination of properties typical of fluoropolymer resins:
• Service Temperature: offers excellent resistance to continuous service temperatures – working conditions from -100° C (-148°F) up to 250° C (482°F) and, for limited periods, even to higher temperatures; product’s low temperature resistance allows satisfactory performance down to –200° C (-328°F).
• Chemical resistance: offers high inertness towards nearly all known chemicals. Only attacked elemental alkali metals, chlorine trifluoride and elemental fluorine at high temperature and pressures might affect properties.
Bronze filled PTFE has limited chemical resistance in some acids and alkalis.
• Solvents resistance: offers insoluble properties in all solvents up to temperatures as high as 300° C (572° F). Certain highly fluorinated oils only swell and dissolve PTFE at temperatures close to the crystalline melting point.
Oxidation of the bronze can result in a discolouration of the finished part without affecting on the quality of the product.

Properties
• Improved thermal dimensional stability
• High thermal conductivity
• Improved deformation under load
• Good chemical stability
• Reduced cold flow
• Reduced friction & wear; Low friction behaviour
• Improved compression strength
• Exceptional temperature resistance
• Improved surface hardness
• High resistance to abrasion

Main applications
Bronze Compound offers excellent properties in the chemical processing, in automotive industries, in sealing application and in mechanical applications in general for bushing, sliding pads, for slide ways for machine tools, piston rings, compressors, pumps, hydraulics presses. High wear, abrasion resistance and good wear compression properties are suitable for the majority of dry bearing applications against hard countersurfaces.
Bronze Compound is commonly used filler for dynamic seal applications requiring high wear resistance under strong compression but where high chemical resistance is not required. Large quantities of bronze reduce deformation under load and raise the thermal and electrical conductivity of PTFE compound. These two characteristics are beneficial to applications where a part is subjected to load at extreme temperatures
Bronze Compound can be easily machined. It’s useful in applications which undergo high mechanical loads or high-speed rubbing contacts where the bronze filler supplies the strength and conductivity to carry away excess, unwanted heat.