Rogers Corporation Bisco™ HT-820 Cellular Silicone Foam

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Rogers Corporation Bisco™ HT-820 Cellular Silicone Foam
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE); Silicone; Silicone Foam
Material Notes:	Firm grade silicone sponge. UL recognized for flame retardance. Applications: Gaskets where higher closure force is available or necessary, Cushions in heavier-load applications Gasketing and sealing rating is JMLU-2 (Listed) per UL 157. No UV degradation per SAE J-1960. Ozone effect rating is 0 (no cracks) per ASTM D-1171. No staining per ASTM D-925(A). Passes AMS-3568 corrosion resistance. Passes SMP-800-C & BSS toxic gas emission rating. Passes hot flex at 230°C (446°F) per ASTM D-573. General BISCO™ silicone information: BISCO™ Cellular Silicones are used as sealing cushioning, vibration isolation, insulation, and thermal management gaskets. Their resistance to environmental extremes, mechanical resilience, and safety features lead to their use in transportation equipment, communications and electrical enclosures, electronic products and components, industrial machinery, and appliances. Data provided by Rogers Corporation.
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Physical Properties	Metric	English	Comments

Density	0.384 g/cc	0.0139 lb/in³	ASTM D3574
Water Absorption	0.80 %	0.80 %	ASTM D471

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	0.414 MPa	60.0 psi	ASTM D412
Elongation at Break	65 %	65 %	ASTM D412
Compressive Yield Strength	0.0970 MPa	14.1 psi	at 25% deflection; ASTM D1056
Compression Set	<= 1.0 % @Temperature 70.0 °C	<= 1.0 % @Temperature 158 °F	ASTM D1056
	<= 5.0 % @Temperature 100 °C	<= 5.0 % @Temperature 212 °F	ASTM D1056

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.00e+14 ohm-cm	1.00e+14 ohm-cm	ASTM D257
Dielectric Constant	1.5	1.5
Dielectric Strength	3.70 kV/mm	94.0 kV/in	ASTM D150
Arc Resistance	96 sec	96 sec	Dry; ASTM D495

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.110 W/m-K	0.763 BTU-in/hr-ft²-°F	ASTM C158
Maximum Service Temperature, Air	200 °C	392 °F	Recommended use; SAE J-2236
	250 °C	482 °F	Intermittent; Rogers internal test
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F	Recommended use; SAE J-2236
Brittleness Temperature	-55.0 °C	-67.0 °F	Low temp embrittlement; ASTM D746(B)
Flammability, UL94	V-0	V-0	Listed (may vary with thickness, color, density)
Flame Spread Index	<= 25	<= 25	I_S; ASTM E162
Smoke Density	<= 20 min	<= 20 min	D_X at 1.5 minutes; ASTM E662
	<= 50 min	<= 50 min	D_X at 4 minutes; ASTM E662
Oxygen Index	42 %	42 %	ASTM D2863

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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