Polycarbonate for CNC Machining
Polycarbonate is a tough, transparent plastic material with outstanding strength, stiffness, and impact resistance.
Updated: 8/20/26
Transparent thermoplastic known for its strength, stiffness, and outstanding impact resistance
Polycarbonate
Polycarbonate, also known as PC, is a tough, transparent plastic material with outstanding strength, stiffness, and impact resistance.
It boasts almost twice the tensile strength of ABS, in addition to its superb mechanical and structural properties.
Performance Characteristics
- Good electrical insulation
- Easy to fabricate and machine
- Bonds easily with solvent cements
- Good optical clarity and toughness
Common Brands
- TUFFAK
- Sustanat
- TECANAT
Polycarbonate Properties
- Mechanical Properties
- Thermal Properties
- Electrical Properties
- Optical Properties
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Mechanical Properties
Tensile Strength 9,500 psi Tensile Modulus of Elasticity 345,000 psi Tensile Elongation 135% Flexural Strength 13,500 psi Flexural Modulus of Elasticity 345,000 psi Compressive Strength 12,500 psi Hardness R118 Izod Impact 12.0 - 16.0 ft-lbs/in -
Thermal Properties
Coefficient of Linear Thermal Expansion 3.8 in/in/°F x 10-5 Heat Deflection Temperature (66 psi/264 psi) 280 / 270 °F Max Continuous Service Temperature in Air 240 °F -
Electrical Properties
Dielectric Strength 380 V/mil -
Optical Properties
Light Transmittance 86% Haze <1%
