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Grade: Lexan® 940
Formula: PC
Form: Rod
Material: Polycarbonate (PC)
CAS Number: 25766-59-0
Commodity: Polymers
Diameter: 12mm

Lexan® 940 Polycarbonate Rod

Lexan® 940 Polycarbonate Rod is recognized for its exceptional toughness, dimensional stability, and optical clarity, qualities that make it a versatile material in both industrial and research applications. In rod form, it provides structural integrity, excellent machinability, and consistent performance under impact and thermal stress. Industries such as aerospace, automotive, electronics, and optics leverage this material for high-precision components and load-bearing applications. Specific uses include transparent housings, optical fixtures, and protective components in demanding environments. Research into Lexan polycarbonates has demonstrated their resilience under ion implantation, irradiation, and high strain-rate impacts, revealing improvements in hardness, wear resistance, and optical properties. These findings reinforce its dual role as both a robust engineering plastic and a platform for advanced materials research. By combining durability, processability, and adaptability, Lexan® 940 Polycarbonate Rod serves as a critical material in pushing forward both industrial technology and scientific innovation.
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Tolerances

Rod
Diameter +20% / -10%

Material Properties for Polymers

Physical Properties
Element Value
Abbe number 34
Flammability V0-V2
Radiation resistance Fair
Refractive index 1.584-6
Resistance to Ultra-violet Fair
Limiting oxygen index( % ) 25-27
Water absorption - equilibrium( % ) 0.35
Water absorption - over 24 hours( % ) 0.1
Density( gcm⁻³ ) 1.2
Chemical Resistance
Element Value
Acids - concentrated Good
Acids - dilute Good
Alcohols Good
Alkalis Good-Poor
Aromatic hydrocarbons Poor
Greases and Oils Good-Fair
Halogenated Hydrocarbons Good-Poor
Halogens Poor
Ketones Poor
Mechanical Properties
Element Value
Coefficient of friction 0.31
Hardness - Rockwell M70
Poisson's ratio 0.37
Elongation at break( % ) 100-150
Tensile modulus( GPa ) 2.3-2.4
Izod impact strength( J m⁻¹ ) 600-850
Abrasive resistance - ASTM D1044( mg/1000 cycles ) Oct-15
Tensile strength( MPa ) 55-75
Electrical Properties
Element Value
Dielectric constant @1MHz 2.9
Dissipation factor @ 1MHz 0.01
Dielectric strength( kV mm⁻¹ ) 15-67
Surface resistivity( Ohm/sq ) 10¹⁵
Volume resistivity( Ohmcm ) 10¹⁴-10¹⁶
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 140
Heat-deflection temperature - 1.8MPa( C ) 128-138
Lower working temperature( C ) -135
Upper working temperature( C ) 115-130
Specific heat( J K⁻¹ kg⁻¹ ) 1200
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.19-0.22@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 66-70
Pultrusions
Element Value
Compressive strength( MPa ) >80

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