DuPont Silastic® Q7-4780 Dow-Corning Biomedical Grade ETR Elastomer

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DuPont Silastic® Q7-4780 Dow-Corning Biomedical Grade ETR Elastomer (Unverified Data**)
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Information provided by Multibase Former Dow (Multibase) grade.
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Physical Properties	Original Value	Comments

Specific Gravity	1.20 g/cc	as molded- 10 minutes at 116°C

Mechanical Properties	Original Value	Comments
Hardness, Shore A	76	as molded- 10 minutes at 116°C
	83	post cured- 2 hours at 177°C
	83	post cured- 4 hours at 177°C
	84	post cured- 8 hours at 177°C
Tensile Strength, Ultimate	876 psi	post cured- 8 hours at 177°C
	970 psi	post cured- 4 hours at 177°C
	1010 psi	post cured- 2 hours at 177°C
	1111 psi	as molded- 10 minutes at 116°C
Tensile Strength, Yield	548 psi	at 200%, as molded- 10 minutes at 116°C
	597 psi	at 200%, post cured- 2 hours at 177°C
	606 psi	200%, post cured- 4 hours at 177°C
	611 psi	200%, post cured- 8 hours at 177°C
Elongation at Break	384 %	post cured- 8 hours at 177°C
	444 %	post cured- 4 hours at 177°C
	483 %	post cured- 2 hours at 177°C
	654 %	as molded- 10 minutes at 116°C
Tear Strength	122 pli	post cured- 8 hours at 177°C; Die B
	129 pli	post cured- 4 hours at 177°C; Die B
	150 pli	post cured- 2 hours at 177°C; Die B
	243 pli	as molded- 10 minutes at 116°C; Die B
Compression Set	62.5 %	22 hours at 177°C, post cured- 4 hours at 177°C
	70.9 %	22 hours at 177°C, as molded-10 minutes at 116°C
	73.4 %	22 hours at 177°C, post cured- 8 hours at 177°C
	81.2 %	22 hours at 177°C, post cured- 2 hours at 177°C

Thermal Properties	Original Value	Comments
Shrinkage	1.9 % @Temperature 116 °C, Time 601 sec	as molded
	2.3 % @Temperature 177 °C, Time 7200 sec	post cured
	2.4 % @Temperature 177 °C, Time 14400 sec	post cured
	2.7 % @Temperature 177 °C, Time 28800 sec	post cured

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PMULTI155 / 54059

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