Elkem (Bluestar Silicones) BLUESIL™ RTV 1556 B Fast Cure Silicone Rubber

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Elkem (Bluestar Silicones) BLUESIL™ RTV 1556 B Fast Cure Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Description: BLUESIL™ RTV 1556 is a two component, high strength, addition cure, room temperature or heat vulcanized silicone rubber compound. Designed specifically for moldmaking applications, it offers low viscosity, high tear cut resistance, and easy release for long lasting molds. BLUESIL™ RTV 1556 has high temperature and chemical resistance with excellent flexibility, low shrinkage, and excellent detail reproduction which makes it well suited for production and prototyping use with all types of casting resins. Applications: Conventional production and prototype molds Giftware, furniture, and artistic molding Finished rubber parts Electronic encapsulation Stereolithography (SLA) molds Epoxy laminate molding Picture frames, mirrors, and furniture molding Information provided by Bluestar Silicones
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Physical Properties	Metric	English	Comments

Specific Gravity	1.10 g/cc	1.10 g/cc
Viscosity	10000 cP	10000 cP	Part B, Catalyst Component
	12000 cP	12000 cP	Mixed
	15000 cP	15000 cP	Part A, Base Component
Linear Mold Shrinkage	<= 0.0010 cm/cm @Time 86400 sec	<= 0.0010 in/in @Time 24.0 hour
	0.0010 cm/cm @Time 605000 sec	0.0010 in/in @Time 168 hour
Storage Temperature	24.0 °C	75.2 °F

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	30	30	ASTM D2240
Tensile Strength	7.136 MPa	1035 psi	ASTM D412
Elongation at Break	660 %	660 %	ASTM D412
Tear Strength	22.8 kN/m	130 pli	ASTM D624, Die B

Electrical Properties	Metric	English	Comments
Volume Resistivity	7.00e+14 ohm-cm	7.00e+14 ohm-cm
Dielectric Constant	3.0 @Frequency 1000 Hz	3.0 @Frequency 1000 Hz
Dielectric Strength	18.1 kV/mm	460 kV/in
Dissipation Factor	0.0040 @Frequency 1000 Hz	0.0040 @Frequency 1000 Hz

Thermal Properties	Metric	English	Comments
CTE, linear	290 µm/m-°C	161 µin/in-°F
Thermal Conductivity	0.250 W/m-K	1.74 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	249 °C	480 °F
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F

Processing Properties	Metric	English	Comments
Cure Time	10100 min	168 hour	50% RH
Pot Life	15.0 min	15.0 min
Shelf Life	18.0 Month	18.0 Month

Descriptive Properties
Color	Translucent		Part A, Base Component
	Translucent		Part B, Catalyst Component
Mix Ratio	10:1		A:B
Work Life	30-60 mins

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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PBLUST040 / 191016

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