CHT Group QM 270 Green 70 Shore A, Addition Cure Moldmaking Material

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CHT Group QM 270 Green 70 Shore A, Addition Cure Moldmaking Material
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product Description: QM 270 is a two-component, room temperature, addition cure, silicone material. The cured rubber has excellent mechanical properties, good shelf-life stability, excellent physical properties and resin resistance. This material is a good choice for the molding of furniture, picture frames and architectural materials. QM 270 is exceptionally good where high durometer and dimensional stability are required. Key Features: High durometer Casting resin resistance Fast demold time Excellent dimensional stability Main Applications: 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	1.01 g/cc	QM 270 Green B, Uncatalyzed
	1.33 g/cc	QM 270 Green A, Uncatalyzed
Viscosity	600 cP	QM 270 Green B, Uncatalyzed
	50000 cP	Catalyzed
	75000 cP	QM 270 Green A, Uncatalyzed
Linear Mold Shrinkage	<= 0.0010 cm/cm	Cured 3 days at 25°C

Mechanical Properties	Original Value	Comments
Hardness, Shore A	75	Cured 3 days at 25°C
Tensile Strength	1000 psi	Cured 3 days at 25°C
Elongation at Break	110 %	Cured 3 days at 25°C
Tear Strength	100 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	-60.0 °C	Cured 3 days at 25°C

Processing Properties	Original Value	Comments
Cure Time	8.00 - 12.0 hour	Demold time, Catalyzed
	72.0 hour @Temperature 25.0 °C
Pot Life	55.0 min	Catalyzed

Descriptive Properties
Color	Beige	QM 270 Green A, Uncatalyzed
	Green	QM 270 Green B, Uncatalyzed
	Light Green	Catalyzed

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PACC2059 / 199447

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