... ≥30.027.4Elongation at Break, %≥300Bulk Density, g/L345~440Average Particle Size, μm20~4040~7020~4040~70Accumulated Heat Weight Loss,%≤0.050 ... . The impurities should be no more than 2 and their size should be no more than 1mm.Its plate is with ... , aircraft, machine and national defense industries. PTFE Molding Powders (small particle size)