ISO 9001:2015 Certified | Cage Code: 7L0f6

TYPICAL PROPERTIES of VESPEL® SP-1 UNFILLED

ASTM or UL test Property SP-1
Filler Material Unfilled
PHYSICAL
D792 Density (lb/in³)
(g/cm³)
0.051
1.43
D570 Water Absorption, 24 hrs @ 73°F (%)
48 hrs @ 122°F (%)
0.24
0.72
MECHANICAL
D638 Tensile Strength, Ultimate @ 73°F (psi)
@ 500°F (psi)
12,500
6,000
D638 Tensile Modulus (psi)
D638 Tensile Elongation, Ultimate @ 73°F (%)
@ 500°F (%)
7.5
6.0
D790 Flexural Strength, Ultimate @ 73°F (psi)
@ 500°F (psi)
16,000
9,000
D790 Flexural Modulus @ 73°F (psi)
@ 500°F (psi)
450,000
250,000
D695 Compressive Strength, 10% strain @ 73°F (psi) 19,300
D695 Compressive Modulus (psi) 350,000
D785 Hardness, Rockwell E45-60
D256 IZOD Notched Impact (ft-lb/in) 0.8
Poisson’s Ratio 0.4
THERMAL
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
3.0
D648 Heat Deflection Temp (°F / °C)
at 264 psi
680 / 360
Max Continuous Operating Temp (°F / °C) 500 / 260
C177 Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10-4 cal/cm-sec-°C)
2.0
6.9
UL94 Flammability Rating V-0
ELECTRICAL
D149 Dielectric Strength (V/mil) short time, 1/8″ thick 560
D150 Dielectric Constant at 1 MHz 3.55
D150 Dissipation Factor at 1 MHz 0.0034
D257 Volume Resistivity (ohm-cm)at 50% RH 1014
1015