Typical Properties of Ultem®


Test Method

Ultem (unfilled)

Ultem (30% glass)

Mechanical Properties

Specific Gravity (g/cm³) ASTM D792 1.27 1.51
Tensile Strength (p.s.i.) ASTM D638 15,200 24,500
Tensile Modulus (p.s.i.) ASTM D638 430,000 1,300,000
Elongation (%) ASTM D638 7-8 3
Flexural Strength (p.s.i.) ASTM D790 22,000 33,000
Flexural Modulus (p.s.i.) ASTM D790 480,000 1,300,000
Compressive Strength (p.s.i.) ASTM D695 21,900 30,700
Compressive Modulus (p.s.i.) ASTM D695 480,000 938,000
Shear Strength (p.s.i.) ASTM D732 15,000 14,000
Izod Impact Notched (ft-lbs/in2) ASTM D256 1.0 2.0
Rockwell Hardness ASTM D785 M109 M114

Thermal Properties

Heat Deflection Temperature at 66 psi (°F) ASTM D648 410 423
Heat Deflection Temperature at 264 psi (°F) ASTM D648 392 410
Coefficient of Linear Thermal Expansion (in/in/°F) ASTM D696 0.000031 0.000011
Continuous Usage Temperature (°F) UL 338 356
Flammability Rating UL94 V-0 V-0

Electrical Properties

Dielectric Strength (Volts/mil) ASTM D149 830 770
Volume Resistivity (Ohm-cm) ASTM D257 6.7×1017 3×1016

Water Absorption Rates

Water Absorption -24 hrs.(%) ASTM D570 .25 .16


NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets.