Machine Grade Polycarbonate is a transparent amorphous thermoplastic which offers very high impact strength and high modulus of elasticity. The material has a 290°F (145°C) heat deflection temperature at 264 psi, absorbs very little moisture and resists acidic solutions. These properties, in addition to good electrical characteristics, make Machine Grade Polycarbonate shapes an excellent choice for electrical/electronic applications. Its strength, impact resistance and transparency also make it an ideal material for certain transparent structural applications such as sight glasses and windows.
Unit of Measure

Tolerance

N/A + 0.002 in- 0.00 in

Weight

N/A 0.154 lb/ft

Specific Gravity (ASTM D792)

N/A 1.20

Refractive Index at 77°F (ASTM D542A)

N/A 1.586

Light Transmission - Average, 0.125" Disc

N/A 86 %

Hardness - Rockwell (ASTM D785)

N/A R118/M70

Water Absorption, Equilibrium, 24 Hours (ASTM D570)

N/A 0.15 %

Tensile Strength at Yield (ASTM D638)

N/A 9000 psi

Tensile Strength - Ultimate (ASTM D638)

N/A 9500 psi

Tensile Modulus (ASTM D638)

N/A 345000 psi

Flexural Strength

N/A 13500 psi

Flexural Modulus

N/A 345000 psi

Compressive Strength

N/A 12500 psi

Compressive Modulus

N/A 345000 psi

Elongation (ASTM D638)

N/A 110 %

Poissons Ratio

N/A 0.38

Izod Impact Strength - Notched at 0.125" (ASTM D256A)

N/A 12 - 16 ft·lb/in

Izod Impact Strength - Unnotched at 0.125" (ASTM D256A)

N/A 60 ft·lb/in

Shear Strength at Yield (ASTM D732)

N/A 6000 psi

Shear Strength - Ultimate (ASTM D732)

N/A 10000 psi

Shear Modulus (ASTM D732)

N/A 114000 psi

Coefficient of Linear Thermal Expansion

N/A 3.75 x 10-5 in/in/ºF

Heat Deflection Temperature at 264 psi

N/A 270 ºF

Heat Deflection Temperature at 66 psi

N/A 280 ºF

Brittle Temperature (ASTM D746)

N/A -200 ºF

Volume Resistivity (ASTM D257)

N/A 8.2 x 1016 ohm·cm