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MechanicalOpticalPolycastProperties test Method UnitPolycast UF3 UF4 UF96 UVTUltra-VioletTransmitting)Ballistic Protection - - - - - -Specific Gravity ASTM D-792 - 1.19 1.19 1.19 1.19 1.19Tensile StrengthYieldElongation, RuptureModulus of ElasticityFlexural Strength(Rupture)Modulus of ElasticityCompressive Strength(Yield)Modulus of ElasticityCompressive Deformation (Under Load)4000 PSI 122F, 24hrASTM D-638ASTM D-790ASTM D-695ASTM D-621psi%psipsipsipsipsi11,2506.4450,00015,250475,00018,000440,00011,2506.4450,00015,250475,00018,000440,00011,2506.4450,00015,250475,00018,000440,00011,2506.4450,00015,250475,00018,000440,00011,2506.4450,00015,250475,00018,000440,000% 0.75 0.75 0.75 0.75 0.75Shear Strength ASTM D-732 psi 9,000 9,000 9,000 9,000 9,000Impact StrengthIzod Milled NotchFalling Steel Ball, 0.5lb (Breakage drop height (ft)ASTM D-256 ft-lbs/in 0.375*18Rockwell Hardness ASTM D-785 - M98* M98* M98* M98* M98*Barcol Hardness ASTM D-2583 - 50* 50* 50* 50* 50*Residual Shrinkage (Internal Strain)PolycastPolycast Mil SpecASTM D-4802%%0.375*180.375*180.375*180.375*182.2 2.2 2.2 2.2 2.2Refractive Index ASTM D-542 - 1.49 1.49 1.49 1.49 1.49Luminous Transmittance (As Cast)TotalHazeYellowness IndexAfter 1000 hrs. Accelerated WeatheringTotalHazeEffect Of Accelerated Weathering-On AppearanceCrazing / Discoloration / WarpingASTM D-1003ASTM D-1925ASTM G26% 92