Overview of materials for Silicone, RTV, Encapsulation Grade

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Overview of materials for Silicone, RTV, Encapsulation Grade
Categories:	Polymer; Thermoset; Silicone; Silicone, RTV, Encapsulation Grade
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Silicone, RTV, Encapsulation Grade". Each property range of values reported is minimum and maximum values of appropriate MatWeb entries. The comments report the average value, and number of data points used to calculate the average. The values are not necessarily typical of any specific grade, especially less common values and those that can be most affected by additives or processing methods.
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Physical Properties	Metric	English	Comments

Density	0.710 - 3.20 g/cc	0.0257 - 0.116 lb/in³	Average value: 1.37 g/cc Grade Count:82
Water Absorption	0.0500 - 0.500 %	0.0500 - 0.500 %	Average value: 0.147 % Grade Count:7
Viscosity	50.0 - 880000 cP	50.0 - 880000 cP	Average value: 23600 cP Grade Count:80
Linear Mold Shrinkage	0.00200 - 0.0200 cm/cm	0.00200 - 0.0200 in/in	Average value: 0.00756 cm/cm Grade Count:17

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	13.0 - 87.0	13.0 - 87.0	Average value: 49.9 Grade Count:64
	40.0 - 40.0 @Temperature 150 - 150 °C	40.0 - 40.0 @Temperature 302 - 302 °F	Average value: 40.0 Grade Count:1
Tensile Strength, Ultimate	0.310 - 6.86 MPa	45.0 - 995 psi	Average value: 3.28 MPa Grade Count:59
Tensile Strength, Yield	1.17 - 1.72 MPa	170 - 250 psi	Average value: 1.42 MPa Grade Count:3
Elongation at Break	15.0 - 400 %	15.0 - 400 %	Average value: 142 % Grade Count:52
Elongation at Yield	80.0 - 160 %	80.0 - 160 %	Average value: 110 % Grade Count:3
Penetration	5.00 - 300	5.00 - 300	Average value: 131 Grade Count:4
Penetration P(0), 1/10 mm	55.0 - 200	55.0 - 200	Average value: 103 Grade Count:3
Tear Strength Test	45.0 - 45.0 @Temperature 150 - 150 °C	45.0 - 45.0 @Temperature 302 - 302 °F	Average value: 45.0 Grade Count:1
Tear Strength	1.40 - 20.0 kN/m	8.00 - 114 pli	Average value: 5.70 kN/m Grade Count:29

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.00e+13 - 1.20e+16 ohm-cm	1.00e+13 - 1.20e+16 ohm-cm	Average value: 9.40e+14 ohm-cm Grade Count:69
	1.00e+13 - 1.00e+13 ohm-cm @Temperature 125 - 125 °C	1.00e+13 - 1.00e+13 ohm-cm @Temperature 257 - 257 °F	Average value: 1.00e+13 ohm-cm Grade Count:1
Dielectric Constant	2.00 - 5.30	2.00 - 5.30	Average value: 3.46 Grade Count:67
Dielectric Strength	7.40 - 27.0 kV/mm	188 - 686 kV/in	Average value: 19.7 kV/mm Grade Count:71
Dissipation Factor	0.000100 - 0.0700	0.000100 - 0.0700	Average value: 0.00975 Grade Count:72

Thermal Properties	Metric	English	Comments
CTE, linear	1.40 - 730 µm/m-°C	0.778 - 406 µin/in-°F	Average value: 223 µm/m-°C Grade Count:55
Thermal Conductivity	0.0159 - 140 W/m-K	0.110 - 972 BTU-in/hr-ft²-°F	Average value: 4.34 W/m-K Grade Count:70
Maximum Service Temperature, Air	125 - 300 °C	257 - 572 °F	Average value: 213 °C Grade Count:65
Minimum Service Temperature, Air	-115 - -40.0 °C	-175 - -40.0 °F	Average value: -64.7 °C Grade Count:60
Glass Transition Temp, Tg	-110 - -40.0 °C	-166 - -40.0 °F	Average value: -72.4 °C Grade Count:5
Flammability, UL94	HB - V-0	HB - V-0	Grade Count:17

Optical Properties	Metric	English	Comments
Refractive Index	1.39 - 1.42	1.39 - 1.42	Average value: 1.41 Grade Count:15
Transmission, Visible	90.0 %	90.0 %	Average value: 90.0 % Grade Count:15

Processing Properties	Metric	English	Comments
Processing Temperature	25.0 °C	77.0 °F	Average value: 25.0 °C Grade Count:27
Cure Time	5.00 - 5760 min	0.0833 - 96.0 hour	Average value: 1180 min Grade Count:29
	5.00 - 480 min @Temperature 50.0 - 200 °C	0.0833 - 8.00 hour @Temperature 122 - 392 °F	Average value: 82.5 min Grade Count:25
Pot Life	1.00 - 10100 min	1.00 - 10100 min	Average value: 246 min Grade Count:65

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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