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Ensinger PEI

Performance Polymers IPS II PPL-C4219 PEKK (Polyetherketoneketone) Linear Wear Grade  (discontinued **)
Categories: Polymer; Thermoplastic; Polyketone; PEKK, Reinforced

Material Notes: Black pellets; Carbon fiber/PTFE/Graphite compound

Information provided by Infinite Polymer System II.

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Physical PropertiesMetricEnglishComments
Density 1.46 g/cc0.0527 lb/in³ASTM D792
Water Absorption 0.040 %0.040 %24 hr; ASTM D570
Linear Mold Shrinkage 0.0020 cm/cm0.0020 in/in
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 9090ASTM D785
Tensile Strength at Break 172 MPa24900 psiASTM D638
Elongation at Break 2.0 %2.0 %ASTM D638
Modulus of Elasticity 12.4 GPa1800 ksiASTM D638
Flexural Yield Strength 248 MPa36000 psiASTM D790
Flexural Modulus 12.4 GPa1800 ksiASTM D790
Compressive Yield Strength 220 MPa31900 psiASTM D695
Shear Strength 138 MPa20000 psiASTM D732
Izod Impact, Notched 0.560 J/cm
@Thickness 3.17 mm
1.05 ft-lb/in
@Thickness 0.125 in
ASTM D256
Izod Impact, Unnotched 6.70 J/cm
@Thickness 3.17 mm
12.6 ft-lb/in
@Thickness 0.125 in
ASTM D256
Coefficient of Friction 0.170.17ASTM D1894
Coefficient of Friction, Static 0.250.25ASTM D1894
Taber Abrasion, mg/1000 Cycles 2323based on 11.5 mg lost per 1Kg load/500 cycles/CS-10 wheel; ASTM D4060
 
Thermal PropertiesMetricEnglishComments
CTE, linear 45.0 µm/m-°C25.0 µin/in-°FBelow glass transition temp; ASTM D696
Thermal Conductivity 0.250 W/m-K1.74 BTU-in/hr-ft²-°FASTM C177
Melting Point 360 °C680 °FDSC
Maximum Service Temperature, Air 260 °C500 °FUL Continuous Use Temp.
Deflection Temperature at 1.8 MPa (264 psi) 260 °C500 °FASTM D648
Glass Transition Temp, Tg 160 °C320 °FDSC
Flammability, UL94 V-0V-0

**
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