Wacker Elastosil® LR 3005/70 A/B Liquid Silicone Rubber

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Wacker Elastosil® LR 3005/70 A/B Liquid Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	Liquid silicone rubber of the ELASTOSIL® LR 3005 series are a paste-like, easily-pigmentable two component compounds with extremely short curing times. The vulcanizates are noted for their excellent mechanical and electrical properties. Due to the excellent compression set, there is no need to postcure technical parts. Properties: Narrow Shore hardness range. The products can be used within a temperature range of - 55°C to + 210°C. The addition of heat stabilizers at service temperatures of more than 180 °C is recommended. Application: These grades are particularly suitable for the economical production of large series of injection molded articles. Parts made from ELASTOSIL® LR 3005 are particularly suitable for the economical production of large series of injection moulded articles. They can generally be used for technical applications without post-curing, but do not comply with regulations in the pharmaceutical and food industry. Information provided by Wacker Chemie AG.
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Physical Properties	Metric	English	Comments

Density	1.15 g/cc	0.0415 lb/in³	DIN EN ISO 1183-1 A
Viscosity	540000 cP @Shear Rate 10.0 1/s	540000 cP @Shear Rate 10.0 1/s	DIN 53019
	1.74e+6 cP @Shear Rate 0.900 1/s	1.74e+6 cP @Shear Rate 0.900 1/s	DIN 53019

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	70	70	DIN 53505
Tensile Strength at Break	9.00 MPa	1310 psi	DIN 53504 S 1
Elongation at Break	350 %	350 %	DIN 53504 S 1
Rebound	65 %	65 %	DIN 53512
Tear Strength	31.0 kN/m	177 pli	ASTM 624 B
Compression Set	13 % @Temperature 175 °C, Time 79200 sec	13 % @Temperature 347 °F, Time 22.0 hour	post cure 6h/200°C; DIN ISO 815-B

Electrical Properties	Metric	English	Comments
Volume Resistivity	6.00e+16 ohm-cm	6.00e+16 ohm-cm	DIN IEC 93
Dielectric Constant	2.7 @Frequency 50 Hz	2.7 @Frequency 50 Hz	DIN VDE 0303
Dielectric Strength	26.0 kV/mm @Thickness 1.00 mm	660 kV/in @Thickness 0.0394 in	DIN IEC 243-2
Dissipation Factor	0.000014 @Frequency 50 Hz	0.000014 @Frequency 50 Hz	DIN VDE 0303

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	210 °C	410 °F	with heat stabilizer
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F

Optical Properties	Metric	English	Comments
Transmission, Visible	90 %	90 %	"Transparent" but manufacturer does not quantify.

Processing Properties	Metric	English	Comments
Cure Time	5.00 min @Treatment Temp. 165 °C	0.0833 hour @Treatment Temp. 329 °F	in press, postcuring for 4h/200°C (in ventilated air)

Descriptive Properties
Appearance	transparent

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PWACK9111 / 204640

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