Wire & Cable Technical Resources


Back to TexWire Home Page

Go Back

ULTEM Detailed Properties

(Polyetherimide)

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.    

 

ULTEM Properties ASTM UNIT ULTEM
MECHANICAL PROPERTIES
Specific Gravity D792   1.27~1.51
Elongation  D638 % 60
Tensile Strength  D638 psi 16,500
Flexural Strength D790 psi 20,000
Compressive Strength D695   22,000
Tensile Elastic Modulus 
(Young's Modulus) 
D638 psi 475,000
Flexural Modulus D790 psi n.a.
D790 103MPa(103kgf/cm2) 500,000
Flex Life D2176 (MIT cycles) n.a.
Hardness Durometer    Shore M M109
Coefficient of Friction   D1984 Static n.a.
Abrasion Resistance Taber 1000 revs. 10
Impact Strength IZOD
73F/23C
D256 notched ft/lbs/in 1.0
THERMAL PROPERTIES
Melting Point   C
(F)
349
(660)
Upper Service
Temperature(20,000h)
  C
(F)
200
(392)
Flame Rating**   UL94 VO
Thermal Conductivity   BTU/hr/sq ft/deg F in n.a.
C117 cal/sec/cm2,C/cm 0.22
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-10kHz 3.15
  D150/106Hz n.a
Dissipation Factor   D150/103Hz n.a
  D150/106Hz n.a
Dielectric Strength   125MILV.
10MILV.
830
n.a.
Volume Resistivity   D257 ohm-cm 6.7 x 1016
Surface Resistivity   ohm/sq. n.a
GENERAL PROPERTIES
Chemical/Solvent
Resistance
    Good
Water Absorption, 24h   % 0.25
RefractiveIndex     1.63~1.68
Arc Resistivity   % n.a
D495 sec n.a