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	Metric	English	Comments

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

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	40	40	Cured 3 days at 25°C
Tensile Strength	6.21 MPa	900 psi	Cured 3 days at 25°C
Elongation at Break	350 %	350 %	Cured 3 days at 25°C
Tear Strength	21.0 kN/m	120 pli	Cured 3 days at 25°C

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	204 °C	399 °F	Cured 3 days at 25°C
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F	Cured 3 days at 25°C

Processing Properties	Metric	English	Comments
Cure Time	1080 - 1440 min	18.0 - 24.0 hour	Demold time, Catalyzed
	4320 min @Temperature 25.0 °C	72.0 hour @Temperature 77.0 °F
Pot Life	45.0 min	45.0 min	Catalyzed

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

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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PACC2050 / 199438

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