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Ensinger PEI

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Hippe PTFE  (discontinued **)
Categories: Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE)

Material Notes: Good chemical resistance. High thermal stability. Flame resistance. Lowest coefficient of friction among all solid plastics. Very good dielectric properties. Very high weathering resistance.

Information provided by Hippe.

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Physical PropertiesOriginal ValueComments
Specific Gravity 2.18 g/ccDIN 53 479
Moisture Absorption at Equilibrium <= 0.050 %Absorption of humidity in standard operating environment; DIN 53 715
Water Absorption at Saturation <= 0.050 %DIN 53 495
 
Mechanical PropertiesOriginal ValueComments
Ball Indentation Hardness 30.0 MPa
@Time 30.0 sec
DIN 53 456
Tensile Strength 25.0 MPaDIN 53 455
Elongation at Break 500 %DIN 53 455
Tensile Modulus 0.700 GPaDIN 53 457
Charpy Impact, Notched NBDIN 53 453
Coefficient of Friction, Dynamic 0.080 - 0.10Against steel, p=0.05 N/mm², v=0.6 m/s, hardened and ground
Abrasion 21µm/km; Against steel, p=0.05 N/mm², v=0.6 m/s, hardened and ground
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+18 ohm-cmDIN 53 482, VDE 0303, Part 3
Dielectric Constant 2.1
@Frequency 1e+6 Hz
DIN 53 483, IEC-250
Dielectric Strength 48.0 kV/mmBreakdown; DIN 53 481, IEC-243, VDE 0303 Part 1
Dielectric Loss Index 0.00020
@Frequency 1e+6 Hz
DIN 53 483, IEC-250
 
Thermal PropertiesOriginal ValueComments
CTE, linear 200 µm/m-°C
Specific Heat Capacity 1.00 J/g-°C
Thermal Conductivity 0.250 W/m-K
Melting Point 327 °CDIN 53 736
Maximum Service Temperature, Air 260 °CContinuous use
 260 °CShort Periods
Deflection Temperature at 0.46 MPa (66 psi) 121 °CISO-R 75 Method B
Deflection Temperature at 1.8 MPa (264 psi) 55.0 °CISO-R 75 Method A
Glass Transition Temp, Tg -20.0 °Cdynamic; DIN 53 736
Flammability, UL94 V-0
 
Descriptive Properties
Colorwhite
Creep ResistanceGrade CTI 600DIN 53 480, IEC-112, VDE 0303 Part 1
Resistance to hot water, sudsresistant

**
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