Description POM? FG311DP is a high viscosity acetal homopolymer, having improved thermal stability and improved in order to more accurately molded. It has been developed for consideration into applications such as parts for the food industry. Features rigidity good dimensional stability, high strength homopolymer impact resistance, good creep resistance good fatigue resistance of high viscosity gear conveyor uses non-specific food applications engineering parts pipe fasteners automotive interior parts Physical Performance Rated Value Unit Test Method Density 1.42 g/cm3 ISO 1183 melt flow rate (190 ° C/2.16 kg) 7.0 g/10 min ISO 1133 melt volume flow rate (MVR) (190 ° C/2.16 kg) 6.00 cm3/10min ISO 1133 Shrinkage ISO 294-4 Across Flow: 2.00 mm 1.8% Flow: 2.00 mm 1.9% Water absorption ISO 62 23 ° C, 24 hr 0.40% saturated, 23 ° C 0.90% balance, 23 ° C, 50% RH 0.20% Mechanical Nominal Value Unit Test Method Tensile Modulus (23 ° C) 3300 MPa ISO 527-2 Tensile stress (yield, 23 ° C) 73.0 MPa ISO 527-2 Tensile strain (yield, 23 ° C) 15 % ISO 527-2 off sheets rate (23 ° C) 35% ISO 527-2 flexural modulus (23 ° C) 3100 MPa ISO 178 Impact Nominal Value Unit Test Method Charpy notched impact strength ISO 179/1eA - 40 ° C 8.0 kJ/m2 -30 ° C 9.0 kJ/m2 23 ° C 10 kJ/m2 Charpy notched impact strength ISO 179/1eU -30 ° C 250 kJ/m2 23 ° C 300 kJ/m2 rated thermal performance Value Unit Test Method Heat Deflection Temperature 0.45 MPa, Unannealed 165 ° C ISO 75-2 / B 1.8 MPa, without annealing 103 ° C ISO 75-2 / A melting temperature of 4 178 ° C ISO 11357-3 ISO linear expansion coefficient 11359-2: -40 to 23 ° C 0.000096 cm / cm / ° C flow: 23 到 55 ° C 0.00011 cm / cm / ° C flow: 55 到 100 ° C 0.00013 cm / cm / ° C Horizontal: -40 to 23 ° C 0.000095 cm / cm / ° C Lateral: 23 到 55 ° C 0.00011 cm / cm / ° C Lateral: 55 到 100 ° C 0.00014 cm / cm / ° C Injection Nominal Value Unit Drying drying temperature 80.0 ° C Time - hot air dryer 2.0 to 4.0 hr maximum recommended moisture content <0.20% processing (melt) temperature of 210 到 220 ° C Melt Temperature, Optimum - Injection Molding 215 ° C mold temperature 80.0 到 100 ° C Mold Temperature, Optimum - Injection Molding 90 ° C