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GEHR E-CTFE® is a linear block copolymer and belongs to the group of amorphous high-performance plastics. It is highly UV and weather resistant and also withstands high-energy (radioactive) radiation. Ethylen-Chlortrifluorethylene exhibits an extraordinary impact strength at temperatures ranging from -76 °C to +150 °C. A great part of the product properties attributes to the very smooth surface and differentiates HALAR® from other fluoropolymers. Due to the fact that E-CTFE is very pure, this material is being used to process chemicals and ultrapure water for the semiconductor industry. Also the permeation resistance to oxygen, carbon dioxide, chlorine gas and hydrochlorid acid is 10 to 100 times better than PTFE.

Polymer Name: Ethylene Chlorotrifluoroethylene Copolymer

Physical Form: Custom

Features: Amorphous, Chemical Resistant, Excellent Performance, Good Impact Strength, Good Sliding Properties, Good Smoothness, Good UV Resistance, Good Weather Stability, High Density, High Gas Permeability, High Temperature Insulation Properties, Radiation Resistant

Density: 1710.0 - 1710.0 kg/m³

Color: Natural

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Technologies

Features & Benefits

Properties
  • Extremely high impact strength (down to -76 °C)
  • Good insulation properties
  • Very good weather resistance
  • High resistance to radiation
  • Very high chemical resistance
  • Very good sliding properties
  • Physiologically harmless
  • High density
  • Limited protection against stress cracking at temperatures > 140 °C

Applications & Uses

Plastics & Elastomers Processing Methods
Applications
  • Parts which come in contact with aggressive media (e.g. plant construction industry)
  • Lining of tanks, pumps, flanges, fittings, parts in centrifuges
  • Parts for ultra pure applications
  • Adapters, dosing stations, filter frames
  • Sliding bearings, roller conveyors
  • Valves, pump- and sealing bodies

Properties

Color
Flame Rating
Physical Form
Form and Condition
Rods / Solid
Odor
Odorless
Insoluble in
Water
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Strength at Yield30MPaISO 527
Elongation at Yield (S)5%ISO 527
Tensile Strength at Break47MPaISO 527
Elongation at Break (R)250%ISO 527
Impact Strength (an)No breakkJ/m2ISO 179
Notch impact Strength (ak)n.b.kJ/m2ISO 179
Ball Indentation (Rockwell Hardness)R 90MPaISO 2039
Hardness69Shore DISO 868
Flexural Strength (B 3,5 %)54MPaISO 178
Modulus of elasticity (Et)1845MPaISO 527
Physical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.71ISO 1183
Water Absorption0.7%ISO 62
Maximum Permissible Service Temperature150°CUL746B
Lower Permissible Service Temperature-76°CUL746B
Thermal Properties
ValueUnitsTest Method / Conditions
Heat Deflection Temperature (HDT/B)82°CISO 75
Heat Deflection Temperature (HDT/A)158°CISO 75
Heat Deflection Temperature (HDT/A)78°CISO 75
Coefficient of Linear Thermal Expansion0.9K-1.10-4ISO 11359
Thermal Conductivity (20°C)0.15W/(m.K)ISO 22007-4
Glass Transition Temperature (Tg)85°CISO 3146
Melting Temperature (Tm)230°CISO 3146
Typical Properties
ValueUnitsTest Method / Conditions
Density1.71g/cm³
Melting Temperature220 - 230°C
Thermal Decompositionmin. 350°C
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivitymin. 10^13Ω.cmIEC 60093
Surface Resistivity (Ro)min. 10^12ΩIEC 60093
Dielectric Constant (1MHz)2.6-IEC 60250
Dielectric Strength15kV/mmIEC 60243-1
Tracking ResistanceCTI 600VIEC 60112
Additional Information
ValueUnitsTest Method / Conditions
BondabilityLimited--
FlammabilityV-0-UL 94
Limiting Oxygen Index (LOI, 9)52%ASTM D2863
UV Stabilisation (6, 9)Yes--

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.