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PEEK Detailed Properties

(Polyetheretherketone)

The table below lists a generally accepted summary of properties that we believe to be reliable.   Please note that many of these resins are produced in several varieties and property characteristics may vary.  Therefore, determination of resin is dependent on the application and this table is only meant to serve as a general guideline.    

 

PEEK Properties ASTMUNIT PEEK
MECHANICAL PROPERTIES
Specific GravityD792  1.30~1.32
Elongation D638 %20~60
Tensile Strength D638psi 14,065~14,500
Flexural Strength D790 psi24,650
Compressive Strength D695 17,110
Transversal Contraction
(Poisson's Ratio)
  0.4
Tensile Elastic Modulus 
(Young's Modulus) 
D638psi522,000
Flexural ModulusD790psi n.a.
D790 103MPa(103kgf/cm2)589,000~594,500
Flex LifeD2176 (MIT cycles)n.a.
Hardness Durometer  D636 Shore DD85~86
Coefficient of Friction  D1984 Dynamic0.18
Abrasion ResistanceTaber1000 revs. n.a.
Impact Strength IZOD
73F/23C
D256notched ft/lbs/in 1.16
THERMAL PROPERTIES
Melting Point  C
(F)
340
(644)
Upper Service
Temperature(20,000h)
  C
(F)
260
(500)
Flame Rating**  UL94VO
Thermal Conductivity  BTU/hr/sq ft/deg F in1.73
C117cal/sec/cm2,C/cm n.a.
Heat of Fusion  BTU/LB
 cal/g
n.a.
n.a.
Heat of Combustion  BTU/LB
 cal/g
n.a.
n.a.
Low Temperature Embrittlement  C
(F)
n.a.
n.a.
ELECTRICAL PROPERTIES
Dielectric Constant  50Hz-10kHz3.20~3.30
 D150/106Hz n.a
Dissipation Factor  D150/103Hz n.a
  D150/106Hzn.a
Dielectric Strength  125MILV.
10MILV.
n.a.
500
Volume Resistivity  D257 ohm-cm4.9 x 1016
Surface Resistivity  ohm/sq. 2.0 x 1016
GENERAL PROPERTIES
Chemical/Solvent
Resistance
   Excellent
Water Absorption, 24h  %0.5
Refractive Index   2.15
Arc Resistivity  %n.a
D495sec n.a.