NEOFLON Daikin ETFE EP521 EP541 EP521 EP541 grade manufacturers (Origin) Daikin type ETFE purpose grade level NEOFLON? EP521 EP541 NEOFLON?'s EP521 EP541 tetrafluoroethylene copolymer Daikin Daikin America Corporation Datasheet NEOFLON ETFE features good flexibility Uses nominal thick-walled parts form pellets Unit Test Method Specific Gravity Sport 1.83 to 1.88 g / cm 3 U.S. ASTM D3159 Melt flow rate (MFR) (297 ° C/5.0 kg) 9.0 to 18g/10 nominal value of U.S. ASTM D3159 Machinery Unit Test Method Tensile strength (yield) from 28.0 to 33.0 MPa U.S. ASTM D3159 Elongation (break) 300-400% U.S. ASTM D3159 Test Method for Thermal Units nominal melt temperature 218 至 228 ° C between the U.S. ASTM D3159