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GEHR PC® is a transparent material and belongs to the group of amorphous engineering plastics as well as to the polyester family of plastics. It has a high stiffness and extremely high impact strength. It also has a high glass transition temperature and heat deflection temperature (approx. +130 °C). The continuous operating temperature of PC ranges between approximately -60 °C and +120 °C. The material is highly resistant to high-energy radiation. However, it must be stabilized against UV rays, otherwise yellowing may occur. Like all polyesters, PC is not resistant to hot water (from approx. +60 °C) in the long term.

Polymer Name: Polycarbonate (PC)

Physical Form: Custom, Rods, Sheets

Features: Amorphous, Chemical Resistant, Dimensional Stability, Excellent Mechanical Strength, Excellent Transparency Properties, Good Impact Strength, High Glass Transition Temperature, High Heat Deflection Temperature, High Stiffness, High Temperature Insulation Properties, High Temperature Resistance, Radiation Resistant

Density: 1150.0 - 1250.0 kg/m³

Color: Transparent

Technical Data Sheet
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Identification & Functionality

Chemical Family
Polymer Name
Technologies

Features & Benefits

Properties
  • Extremely high impact strength
  • High mechanical strength
  • High dimensional stability
  • High temperature resistance
  • Good insulating properties
  • High resistance to radiation
  • Medium chemical resistance
  • Notch-sensitive and susceptible to stress crack formation
  • Hydrolysis-sensitive

Applications & Uses

Plastics & Elastomers Processing Methods
Applications
  • Components in the electrical industry and medical Technology
  • Dosing stations
  • Fixings and spacers

Properties

Flame Rating
Physical Form
Form and Condition
Rods. Sheets. Profiles / Solid
Odor
Odorless
Insoluble in
Water
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Strength at Yield75MPaISO 527
Elongation at Yield (S)3%ISO 527
Elongation at Break (R)75%ISO 527
Impact Strength (an)No breakkJ/m2ISO 179
Notch impact Strength (ak)9kJ/m2ISO 179
Ball Indentation (Rockwell Hardness)100MPaISO 2039
Hardness85Shore DISO 868
Modulus of elasticity (Et)2370MPaISO 527
Physical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.2ISO 1183
Water Absorption0.4%ISO 62
Humidity Absorption0.15%ISO 62
Maximum Permissible Service Temperature120°CUL746B
Lower Permissible Service Temperature-60°CUL746B
Thermal Properties
ValueUnitsTest Method / Conditions
Heat Deflection Temperature (HDT/B)140°CISO 75
Heat Deflection Temperature (HDT/A)135°CISO 75
Coefficient of Linear Thermal Expansion0.7K-1.10-4ISO 11359
Thermal Conductivity (20°C)0.25W/(m.K)ISO 22007-4
Thermal Conductivity (20°C)0.21W/(m.K)ISO 22007-4
Glass Transition Temperature (Tg)150°CISO 3146
Melting Temperature (Tm)150°CISO 3146
Typical Properties
ValueUnitsTest Method / Conditions
Density1.15 - 1.25g/cm³
Melting Temperature150 - 200°C
Ignition Temperature (ca)450°C
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivitymin. 10^13Ω.cmIEC 60093
Surface Resistivity (Ro)min. 10^13ΩIEC 60093
Dielectric Constant (1MHz)3-IEC 60250
Dielectric Loss Factor (1 MHz)6-IEC 60250
Dielectric Strength27kV/mmIEC 60243-1
Additional Information
ValueUnitsTest Method / Conditions
BondabilityYes--
Physiological Indifference (EEC)Yes-
Physiological Indifference (FDA)Yes-
FlammabilityHB-UL 94
Limiting Oxygen Index (LOI, 9)26%ASTM D2863

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Fire-fighting Measures

Suitable extinguishing agents

Water, foam, dry chemical, carbon dioxide (CO2).

Potential combustion products

Carbon dioxide (CO2), carbon monoxide (CO). Formation of further decomposition and oxidation products depend upon the fire conditions. Under special fire conditions traces of other toxic substances are possible.

Special protective equipment

Wear a self-contained breathing apparatus. If exposed to combustion fumes bring the victim into fresh air.

Further information

Dispose of fire debris and contaminated extinguishing water in accordance with official regulations..

Safety & Health

Safety Measures

The general industrial safety measures should be considered. A thermal damage during machining should be avoided.

Storage & Handling

Machining

The product can be machined with standard machinery and tools. Before machining the product should be stored at room temperature 24 h. Evacuate swarf to prevent slipping or tripping. Observe the maximum allowable concentration of dust and formaldehyd levels on the working area which apply in your country. Wear safety goggles during machining. General dust limit value: Respirable dust (6 mg/m3); Inhalable dust (10 mg/m3 ).

Storage

The products shall be stored indoor to keep away from any source of degradation such as sunlight, UV-jets, ionizing radiation, chemicals.