KYNAR® (PVDF) is a high molecular weight thermoplastic polymer with excellent chemical inertness. It is highly resistant to oxidizing agents and halogens and is almost completely resistant to allphatic, aromatics, alcohols, acids and chlorinated solvents. It is resistant to most acids and bases. Mechanically strong. High dielectric strength. Thermally stable. Resistant to low temperatures. Stable to ultraviolet and extreme weather conditions. Self-extinguishing and non-toxic.
Melting point : 352° F
Heat deflection at 66 psi (ASTM D 648) : 300° F
Heat deflection at 264 psi (ASTM D 648) : 235° F
Maximum serving temperature for short term : 340° F
Maximum serving temperature for long term : 285° F
Thermal conductivity (ASTM C 177) : 1.32 Btu-inch/hr-ft~2- ° F
Specific heat : 0.23 Btu/lb- ° F
Coefficient of linear thermal expansion (ASTM D 696) : 7.1x10~5
Applicable temperature range for thermal expansion : 50-300° F
Specific gravity (ASTM D 792) : 1.78
Tensile strength, Ultimate (ASTM D 638) : 7,800 p.s.i.
Elongation at break (ASTM D 638) : 80%
Tensile modulus (ASTM D 638) : 3.5x10~5 p.s.i.
Rockwell hardness (ASTM D 785) : R100
Impact strength (73° F) (ASTM D 256) (notched) : 3.0 ft-lb/inch
Flexural strength (ASTM D 790) : 10,750 p.s.i.
Flexural modulus (ASTM D 790) : 3.3x 10~5 p.s.i.
Wear factor against steel 40 psi 50fpm : 1000x10~10
Coefficient of friction 40psi 50fpm : 0.24 Dynamic