GE Plastics Lexan® Polycarbonate, unfilled, machine grade, extruded

Material Notes:
Lexan* polycarbonate is a mechanical grade of extruded polycarbonate that offers high strength, stiffness, and impact resistance with temperature resistance to 290°F. This material also has excellent electrical properties, making it a candidate for both the electronics industry and structural applications requiring transparency. A food grade polycarbonate is also available that is compliant with FDA, NSF, Canada AG, and USP Class VI regulations

Physical Properties	Metric	English	Comments
Density	1.2 g/cc	0.0434 lb/in³	ASTM D792
Water Absorption	0.2 %	0.2 %	24 hour immersion; ASTM D570
Water Absorption at Saturation	0.4 %	0.4 %	Immersion; ASTM D570
Outgassing - Total Mass Loss	0 %	0 %
Chemical Properties
Ionic Impurities - Na (Sodium)	0.2 ppm	0.2 ppm
Ionic Impurities - K (Potassium)	0.1 ppm	0.1 ppm
Ionic Impurities - Fe (Iron)	0.3 ppm	0.3 ppm
Mechanical Properties
Hardness, Rockwell M	75	75	ASTM D785
Hardness, Rockwell R	126	126	ASTM D785
Hardness, Shore D	80	80	ASTM D2240
Tensile Strength, Ultimate	72.4 MPa	10500 psi	ASTM D638
Elongation at Break	100 %	100 %	ASTM D638
Tensile Modulus	2.21 GPa	320 ksi	ASTM D638
Flexural Modulus	2.41 GPa	350 ksi	ASTM D790
Flexural Yield Strength	89.6 MPa	13000 psi	ASTM D790
Compressive Yield Strength	79.3 MPa	11500 psi	10% Deflection; ASTM D695
Compressive Modulus	2.07 GPa	300 ksi	ASTM D695
Machinability	30 %	30 %	QEPP 10 to 100 scale
Shear Strength	63.4 MPa	9200 psi	ASTM D732
Limiting Pressure Velocity	0.035 MPa-m/sec	1000 psi-ft/min	PTM55007
Izod Impact, Notched	0.801 J/cm	1.5 ft-lb/in	ASTM D256A
Electrical Properties
Surface Resistivity per Square	Min 1e+013 ohm	Min 1e+013 ohm	EOS/ESD S11.11
Dielectric Constant	3.17	3.17	1 MHz; ASTM D150(2)
Dielectric Strength	15.7 kV/mm	400 V/mil	Short Term; ASTM D149(2)
Dissipation Factor	0.0009	0.0009	1 MHz; ASTM D150(2)
Thermal Properties
CTE, linear 68°F	70.2 µm/m-°C	39 µin/in-°F	ASTM E831 (TMA)
Thermal Conductivity	0.187 W/m-K	1.3 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	121 °C	250 °F	Continuous Service Without Load
Deflection Temperature at 1.8 MPa (264 psi)	143 °C	290 °F	ASTM D648
Glass Temperature	145 °C	293 °F	ASTM D3418
Flammability, UL94	HB	HB	UL94
Descriptive Properties
Compliance - Canada AG	Not Compliant
Compliance - Dairy 3A	Not Compliant
Compliance - FDA	Not Compliant
Compliance - NSF	Not Compliant
Compliance - USDA	Not Compliant
Compliance - USP Class VI	Not Compliant
Service in Alcohols	Acceptable
Service in Aliphatic Hydrocarbons	Limited
Service in Aromatic Hydrocarbons	Unacceptable
Service in Chlorinated Solvents	Unacceptable
Service in Continuous Sunlight	Limited
Service in Ethers	Unacceptable
Service in Inorganic Salt Solutions	Acceptable
Service in Ketones	Unacceptable
Service in Steam	Acceptable
Service in Strong Acids	Unacceptable
Service in Strong Alkalies	Unacceptable
Service in Weak Acids	Acceptable
Service in Weak Alkalies	Acceptable