Properties of Lexan 241R

• LEXAN is a polycarbonate that was originally introduced in the 1950s. It contains high levels of optical, thermal and mechanical properties that allow it to be used in a wide range of products. Just a few of these products include automobiles, lighting, electronic equipment, eyewear and compact discs. Because of the properties of this material, 3 million metric tons are sold each year. LEXAN 241R is a multipurpose grade polycarbonate with medium viscosity. It is also used as a molding compound and formed into pellets for filler in packaging applications. The properties of LEXAN 241R differ by region. Listed below are the properties for LEXAN in the Americas and the Asian regions of the globe.

Physical

• The water absorption rate is 0.150 percent in a 24-hour period. Its specific gravity is 1.20 g/cc while its density is 0.0430 pounds per inch. The linear mold flow shrinkage is 0.00500 to 0.00700 cm at a thickness of 0.126 inches. The melt flow is 10.5 g per 10 minutes at a 2.65 pound load and temperature of 572 degrees F.

Mechanical

• The tensile strength is 9860psi while the tensile strength at yield is 899. Elongation at break is 130 percent, while at yield is it is 7 percent. The flex yield strength is 13900psi. Its falling dart impact is 125 feet per pound and notched Izod impact is 15 feet per pound.

Thermal

• Linear CTE at a temperature range of -40.0 to 203 degrees F is 38.0 µin/in- degrees F. The specific heat capacity is 0.299 BTU/lb- degrees F. The deflection temperature at 0.46 MPa and 66psi is 279 degrees F at a thickness 0.252 inches. The Vicat softening point is 309 degrees F. It's UL flammability is V-2 at a thickness of 0.0429 inches.

Electrical

• Volume resistivity is greater than or equal to 1.00e+17 ohm-cm. The comparative tracking index is 250 to 400 volts. Hot Wire Ignition (HWI) is 30.0 to 60.0 per second. High Amp Arc Ignition (HAI) is 60.0 to 120 arcs. The High Voltage Arc-Tracking Rate (HVTR) is 1.00 to 3.15 in/min. Dielectric strength is 378 kV/in at a thickness of 0.126 inches. Dissipation factor is 0.000900 at 50.0 to 60.0 Hz frequency.

Optical

• The refractive Index is 1.586. Its haze is 1 percent at a thickness of 0.100 inches while its visible transmission is 88 percent at a thickness of 0.100 inches.