Reynolds Mold Star® 15 SLOW Platinum Silicone Rubbers

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Reynolds Mold Star® 15 SLOW Platinum Silicone Rubbers
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Product Overview: Mold Star™ rubbers are easy to use platinum silicones which are mixed 1A:1B by volume (no weighing scale necessary). Mold Star™ silicones feature relatively low viscosities and vacuum degassing is not required for most applications. The pot life of Mold Star™ 15 SLOW is 50 minutes and cure time is 4 hours at room temperature. Mold Star™ 16 FAST is a faster material with a 6 minute pot life and 30 minute cure time. Mold Star™ 30 is a harder material, with a 30A Shore hardness. Mold Star™ silicones cure to soft, strong rubbers which are tear resistant and exhibit very low long term shrinkage. Molds made with Mold Star™ will last a long time in your mold library and are good for casting wax, gypsum, resins, and other materials. Cured Mold Star™ rubber is heat resistant up to 450°F (232°C) and is suitable for casting low-temperature melt metal alloys. Information provided by Reynolds Advanced Materials
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Physical Properties	Original Value	Comments

Specific Gravity	1.18 g/cc	ASTM D-1475
Viscosity	12500 cP	Mixed; ASTM D-2393
Linear Mold Shrinkage	<= 0.0010 in/in	ASTM D-2566

Mechanical Properties	Original Value	Comments
Hardness, Shore A	15	ASTM D-2240
Tensile Strength	400 psi	ASTM D-412
Elongation at Break	440 %	ASTM D-412
100% Modulus	55.0 psi	ASTM D-412
Tear Strength	88.0 pli	Die B; ASTM D-624

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	232 °C
Minimum Service Temperature, Air	-53.0 °C

Processing Properties	Original Value	Comments
Cure Time	4.00 hour
Pot Life	50.0 min	ASTM D-2471

Descriptive Properties
Color	Green
Mix Ratio	1A:1B	by volume
	1A:1B	by weight
Specific Volume	23.5	[cu. in./lb.]

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PREYN112 / 296813

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