PP (polypropylene # pleated plastic | soft) / K9026 / Yanshan Petrochemical raw materials specification level description Washing Compound raw technical data Performance Project test conditions [state] method of test data Data unit Physical properties of melt flow rate of 230 ℃ / 2.16kg ASTM D-1238 25 g / 10min Mechanical properties of tensile yield stress? ASTM D-638 19.5 MPa Elongation at break? ASTM D-638 350% Charpy notched impact strength 23 ℃ ASTM D-256 56 Kj / m2 Charpy notched impact strength -20 ℃ ASTM D-256 11 Kj / m2 Rockwell hardness? 23 ℃ ASTM D-785 75.9 R-Scale flexural modulus? ASTM D-790A 913 MPa Thermal heat distortion temperature? ASTM D- 648 81 ℃