PEEK Properties

Teflon Properties from Tef Cap

Poly Ether Ether Ketone

PropertiesUnits / ASTMPFA
MECHANICAL PROPERTIES
Specific GravityD7921.32
Elongation %D63850
Tensile Strength (psi)D6382,100
Flexural Strength (psi)D790
Compressive StrengthD69517,100
Tensile Elastic Modulus (Young's Modulus) (psi)D638520,000
Flexural Modulus 103MPa (103kgf/cm2)D790530,000
Flex Life (MIT cycles)D2176
Hardness Durometer Shore DD2240>85
Coefficient of Friction on steel.34
Abrasion Resistance 1000 revs.Taber
Impact Strength IZOD 73°F/23°C, notched ft/lbs/inD256655
THERMAL PROPERTIES
Melting Point°F650
Upper Service Temperature (20,000h)°F500
Flame RatingUL 94V-O
Thermal ConductivityBTU/hr/ft2/deg °F in1.2
Linear Coefficient of Thermal ExpansionD69647
Heat of FusionBTU/LB
Heat of CombustionBTU/LB
Low Temperature Embrittlement°F
ELECTRICAL PROPERTIES
Dielectric ConstantD150/103Hz ( 106Hz )2.8
Dielectric Strength 10 mil filmD149500
Volume Resistivity ohm-cmD25710^16
Surface Resistivity ohm/sq.D257
GENERAL PROPERTIES
Chemical/Solvent ResistanceD543Excellent
Water Absorption, 24hr / %.1 - .45
Deformation Under LoadD621/110°C
Refractive Index
Limiting Oxygen Index %D286335