Wacker Elastosil® R 750/40 Silicone Rubber

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Wacker Elastosil® R 750/40 Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Vulcanizates of ELASTOSIL® R 750/40 silicone rubber possess particularly good resistance to high temperature, oxygen and dry heat. Application: ELASTOSIL® R 750/40 is optimized for applications at high temperatures and can be used for extrusion and molding applications. Vulcanizates of ELASTOSIL® R 750/40 can withstand temperatures of 300 °C for at least seven days. Information provided by Wacker Chemie AG.
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Physical Properties	Metric	English	Comments

Density	1.12 g/cc	0.0405 lb/in³	ISO 1183-1 A

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	35	35	using 3% EL AUX STAB H6, curing Agent E
	38	38	using 3% EL AUX STAB H6, curing Agent C1
	40	40	curing Agent C1; DIN 53505 A
	40	40	curing Agent E; DIN 53505 A
	60 @Treatment Temp. 300 °C, Time 259000 sec	60 @Treatment Temp. 572 °F, Time 72.0 hour	using 3% EL AUX STAB H6, curing Agent E, Hot-air aged
	63 @Treatment Temp. 300 °C, Time 259000 sec	63 @Treatment Temp. 572 °F, Time 72.0 hour	using 3% EL AUX STAB H6, curing Agent C1, Hot-air aged
	71 @Treatment Temp. 300 °C, Time 605000 sec	71 @Treatment Temp. 572 °F, Time 168 hour	using 3% EL AUX STAB H6, curing Agent C1, Hot-air aged
	72 @Treatment Temp. 300 °C, Time 605000 sec	72 @Treatment Temp. 572 °F, Time 168 hour	using 3% EL AUX STAB H6, curing Agent E, Hot-air aged
Tensile Strength at Break	9.40 MPa	1360 psi	using 3% EL AUX STAB H6, curing Agent E
	9.80 MPa	1420 psi	using 3% EL AUX STAB H6, curing Agent C1
	10.3 MPa	1490 psi	curing Agent E; DIN 53504 S1
	11.2 MPa	1620 psi	curing Agent C1; DIN 53504 S1
	5.30 MPa @Treatment Temp. 300 °C, Time 605000 sec	769 psi @Treatment Temp. 572 °F, Time 168 hour	using 3% EL AUX STAB H6, curing Agent C1, Hot-air aged
	5.40 MPa @Treatment Temp. 300 °C, Time 259000 sec	783 psi @Treatment Temp. 572 °F, Time 72.0 hour	using 3% EL AUX STAB H6, curing Agent C1, Hot-air aged
	6.40 MPa @Treatment Temp. 300 °C, Time 605000 sec	928 psi @Treatment Temp. 572 °F, Time 168 hour	using 3% EL AUX STAB H6, curing Agent E, Hot-air aged
	7.00 MPa @Treatment Temp. 300 °C, Time 259000 sec	1020 psi @Treatment Temp. 572 °F, Time 72.0 hour	using 3% EL AUX STAB H6, curing Agent E, Hot-air aged
Elongation at Break	587 %	587 %	using 3% EL AUX STAB H6, curing Agent E
	610 %	610 %	curing Agent E; DIN 53504 S1
	638 %	638 %	using 3% EL AUX STAB H6, curing Agent C1
	740 %	740 %	curing Agent C1; DIN 53504 S1
	159 % @Treatment Temp. 300 °C, Time 605000 sec	159 % @Treatment Temp. 572 °F, Time 168 hour	using 3% EL AUX STAB H6, curing Agent E, Hot-air aged
	160 % @Treatment Temp. 300 °C, Time 605000 sec	160 % @Treatment Temp. 572 °F, Time 168 hour	using 3% EL AUX STAB H6, curing Agent C1, Hot-air aged
	236 % @Treatment Temp. 300 °C, Time 259000 sec	236 % @Treatment Temp. 572 °F, Time 72.0 hour	using 3% EL AUX STAB H6, curing Agent C1, Hot-air aged
	256 % @Treatment Temp. 300 °C, Time 259000 sec	256 % @Treatment Temp. 572 °F, Time 72.0 hour	using 3% EL AUX STAB H6, curing Agent E, Hot-air aged
Rebound	46 %	46 %	curing Agent C1; DIN 53512
	49 %	49 %	curing Agent E; DIN 53512
Tear Strength	27.0 kN/m	154 pli	curing Agent E; ASTM D624 B
	29.0 kN/m	165 pli	curing Agent C1; ASTM D624 B
Compression Set	15 % @Temperature 175 °C, Time 79200 sec	15 % @Temperature 347 °F, Time 22.0 hour	curing Agent C1; DIN ISO 815-B
	30 % @Temperature 175 °C, Time 79200 sec	30 % @Temperature 347 °F, Time 22.0 hour	curing Agent E; DIN ISO 815-B

Processing Properties	Metric	English	Comments
Cure Time	10.0 min @Treatment Temp. 135 °C	0.167 hour @Treatment Temp. 275 °F	post cured 4h/200°C, E crosslinker
	15.0 min @Treatment Temp. 165 °C	0.250 hour @Treatment Temp. 329 °F	post cured 4h/200°C, C1 crosslinker

Descriptive Properties
Appearance	translucent

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.

PWACK9230 / 204759

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