PROPIEDADES FISICAS DEL POLIPROPILENO   PROPERTIES ASTM TEST METHOD HOMOPOLYMER POLYPROPYLENE COPOLYMER POLYPROPYLENE Density-g/cm3 D 792 .905 .897 Resistencia a la tensión-PSI D 638 4,800 4,000 Tensile Elongation al Yield % D 638 12% 23% Flexural Modulus-PSI D638 195,000 N.A. Flexural Strength-PSI D 790 7,000 5,400 Flexural Modulus-PSI D 790 180,000 160,000 IZOD Impact Notched Ft lb/in @ 73°F D 256 1.9 7.5 Heat Deflection Temp. °F @ 66 PSI D 648 210 173 Mean Coefficient of Linear Thermal Expansion In/in °F D 696 6.2 X 10-5 6.6 X 10-5 Hardness - Rockwell R D 785 92 75 Water Absorption % D 570 .008 .01 Flammability Rating UL- 94 not rated not rated Maximum Operating Temperature °F Poly HI Solidur recommends 180 170