CHT Group QM 240T 40 Shore A, Translucent, Addition Cure Moldmaking Material

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CHT Group QM 240T 40 Shore A, Translucent, Addition Cure Moldmaking Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QM 240T is a two-component, room temperature, addition cure, silicone material. The cured rubber has excellent mechanical properties and good shelf-life stability. This material has been designed for the prototyping industry. However, it is also a good choice for molding of furniture, picture frames and architectural materials. Key Features: Translucent Casting resin resistance Fast demold time Excellent dimensional stability Main Applications: Rapid prototyping Molds for architectural replication Molds for polyester, epoxy resin casting, and rigid or foam polyurethane Molds for technical articles and prototypes Molds for furniture and picture frame replication Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017
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Physical Properties	Original Value	Comments

Specific Gravity	0.980 g/cc	QM 240TB, Uncatalyzed
	1.10 g/cc	QM 240TA, Uncatalyzed
Viscosity	2500 cP	QM 240TB, Uncatalyzed
	60000 cP	Catalyzed
	85000 cP	QM 240TA, Uncatalyzed
Linear Mold Shrinkage	<= 0.0010 cm/cm	Cured 3 days at 25°C

Mechanical Properties	Original Value	Comments
Hardness, Shore A	40	Cured 3 days at 25°C
Tensile Strength	900 psi	Cured 3 days at 25°C
Elongation at Break	350 %	Cured 3 days at 25°C
Tear Strength	120 pli	Cured 3 days at 25°C

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	204 °C	Cured 3 days at 25°C
Minimum Service Temperature, Air	-55.0 °C	Cured 3 days at 25°C

Processing Properties	Original Value	Comments
Cure Time	18.0 - 24.0 hour	Demold time, Catalyzed
	72.0 hour @Temperature 25.0 °C
Pot Life	45.0 min	Catalyzed

Descriptive Properties
Color	Clear	QM 240TB, Uncatalyzed
	Translucent	Catalyzed
	Translucent	QM 240TA, Uncatalyzed

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PACC2050 / 199438

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