① material description specification levels: injection grade Color: --- Application: --- Remarks: --- ② raw technical data Performance Project test conditions [state] method of test data Superior grade First grade Qualified Data unit Basic properties of melt flow rate of 230 ℃, 2.16kg --- 1.6-2.0 1.4-2.2 1.0-2.2 g / 10min Mechanical properties of tensile yield strength --- --- ≥22.5 ≥21.0 ≥20.0 MPa Izod impact strength -20 ℃ --- ≥4.0 ≥3.3 ≥3.0 KJ / m2 Rockwell hardness --- --- ≥75 ≥75 ≥75 R thermal performance of Vicat softening point --- --- ≥135 ≥135 ≥135 ℃ Other properties powder ash --- --- ≤0.02 ≤0.03 ≤0.05% (m / m) color tablets --- --- ≤5 ≤10 ≤20 grain / kg resin