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ULTEM

 
GENERAL PROPERTIES
Ultem Material (c) Boedeker Plastics 2001Ultem® PolyEtherImide (PEI) is an amber transparent high performance polymer which combines high strength and rigidity at elevated temperatures with long term heat resistance. Ultem® offers excellent dimensional stability combined with broad chemical resistance. 

Ultem® is also inherently flame resistant and low smoke generating. It excels in medical reusable applications requiring repeated sterilization and is available in FDA compliant colors. 

ULTEM® GRADES
Ultem® 1000 - unfilled
Unfilled Ultem® excels in hot air and water environments. It's hydrolitically stable -- it retains 85% of tensile strength after 10,000 hour boiling water immersion and 100% of tensile strength after 2,000 steam autoclave cycles at 270°F. It is also UV and gamma radiation resistant. 

Ultem® 2100 - 10% glass filledUltem®2200 - 20% glass filled,
Ultem® 2300 - 30% glass filled
Glass reinforced Ultem® provides even greater rigidity and dimensional stability while maintaining many of the useful characteristics of basic Ultem®. The glass reinforcement yields a product with an exceptional strength-to-weight ratio and increased tensile strength.
( see also Semitron ESd 410 or or Tempalux CN Static-Dissipative Ultem Specifications)

 

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TYPICAL PROPERTIES of ULTEM® 
 
ASTM or UL test Property Ultem®1000
unfilled
Ultem®2300
30% glass
PHYSICAL
D792 Density (lb/in³)
(g/cm³)
0.046
1.28
0.055
1.51
D570 Water Absorption, 24 hrs (%) 0.25 0.18
MECHANICAL
D638 Tensile Strength (psi) 16,500 17,000
D638 Tensile Modulus (psi) 475,000 800,000
D638 Tensile Elongation at Break (%) 80 3.0
D790 Flexural Strength (psi) 20,000 30,000
D790 Flexural Modulus (psi) 500,000 900,000
D695 Compressive Strength (psi) 22,000 32,000
D695 Compressive Modulus (psi) 480,000 620,000
D785 Hardness, Rockwell M112 / R125 M114 / R127
D256 IZOD Notched Impact (ft-lb/in) 0.5 1.0
THERMAL
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
3.1 1.1
D648 Heat Deflection Temp (°F / °C)
at 264 psi

392 / 200

410 / 210
D3418 Glass Transition Temp (°F / °C) 419 / 215 419 / 215
-
 
Max Operating Temp (°F / °C) 340 / 171 340 / 171
C177 Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10-4 cal/cm-sec-°C)

0.90
3.10

0.90
3.10
UL94 Flammability Rating V-O V-O
ELECTRICAL
D149 Dielectric Strength (V/mil) short time, 1/8" thick 830 770
D150 Dielectric Constant at 1 MHz 3.15 3.70
D150 Dissipation Factor at 1 MHz 0.0013 0.0015
D257 Volume Resistivity (ohm-cm)at 50% RH 6.7 x 1017 3.0 x 1016