ISO 9001:2015 Certified | Cage Code: 7L0f6

TYPICAL PROPERTIES of VESPEL® SP-22

ASTM or UL test Property SP-22
Filler Material 40% Graphite
PHYSICAL
D792 Density (lb/in³)
(g/cm³)
0.060
1.65
D570 Water Absorption, 24 hrs @ 73°F (%)
48 hrs @ 122°F (%)
0.14
0.42
MECHANICAL
D638 Tensile Strength, Ultimate @ 73°F (psi)
@ 500°F (psi)
7,500
3,400
D638 Tensile Modulus (psi)
D638 Tensile Elongation, Ultimate @ 73°F (%)
@ 500°F (%)
3.0
2.0
D790 Flexural Strength, Ultimate @ 73°F (psi)
@ 500°F (psi)
13,000
6,500
D790 Flexural Modulus @ 73°F (psi)
@ 500°F (psi)
700,000
400,000
D695 Compressive Strength, 10% strain @ 73°F (psi) 16,300
D695 Compressive Modulus (psi) 475,000
D785 Hardness, Rockwell E5-25
D256 IZOD Notched Impact (ft-lb/in)
Poisson’s Ratio
THERMAL
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
2.1
D648 Heat Deflection Temp (°F / °C)
at 264 psi
Max Continuous Operating Temp (°F / °C) 500 / 260
C177 Thermal Conductivity
UL94 Flammability Rating
ELECTRICAL
D149 Dielectric Strength (V/mil) short time, 1/8″ thick
D150 Dielectric Constant at 1 MHz
D150 Dissipation Factor at 1 MHz
D257 Volume Resistivity (ohm-cm)at 50% RH