Glass-reinforced polycarbonate is effective in designs where metals, particularly die-cast aluminum and zinc, are commonly used. The addition of glass fibers to polycarbonate increases tensile strength, stiffness, compressive strength, and lower the thermal expansion coefficient. The greater the amount of glass fiber added to the polycarbonate, the greater the effect on each property will be. The coefficient of thermal expansion is reduced by nearly 75%, thus equaling that of some metals. While glass-reinforced has less impact strength than standard grades, it is still tougher and more impact resistant than most other plastics and die cast aluminum.Lexan® 3412R is a ​20% glass-reinforced polycarbonate with higher temperature and tensile properties than the unfilled Polycarbonate. Typical property characteristics include superior impact strength, outstanding mechanical strength and stiffness, excellent dimensional stability, and good machinability.
Unit of Measure

Material

N/A GF20 PC

Color

N/A Black

ASTM (Resin Spec)

N/A D3935 PC0120G20A00000

Thickness

N/A 3.500 in

Thickness Tolerance

N/A plus only in

Sheet Size

N/A 24x48 in

Optional Sheet Size

N/A 12x12

Availability

N/A stock

Weight

N/A 24.57 lb/ft²

Specific Gravity (ASTM D792)

N/A 1.35 gm/cc

Water Absorption - 24 hrs, 73°F (ASTM D570)

N/A .16

Water Absorption - Equilibrium, 73°F (ASTM D570)

N/A .29

Tensile Strength at Break (ASTM D638)

N/A 15900 psi

Flexural Strength - 73°F (ASTM D790)

N/A 18900 psi

Flexural Modulus

N/A 799000 psi

Izod Impact Strength - Unnotched, 73ºF (ASTM D4812)

N/A 19 ft·lb/in

Izod Impact Strength - Notched at 73ºF (ASTM D256)

N/A 2 ft·lb/in

Deflection Temperature at 264 psi, 0.250" (ASTM D648)

N/A 295 ºF

Deflection Temperature at 66 psi, 0.250" (ASTM D648)

N/A 300 ºF

Dielectric Strength

N/A 490 V/mil

Flammability at 0.059" UL94

N/A V1

Flammability at .118" UL94

N/A V0 & 5VA

Characteristics

N/A Lexan® 3412R offers excellent rigidity along with highly stable mechanical, electrical, optical and thermal properties. Provides optimum combination of high modulus plus excellent impact strength and flame retardance. Exhibits outstanding dimensional stability.