Wacker Elastosil® R 512/70 Silicone Rubber

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Wacker Elastosil® R 512/70 Silicone Rubber
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Product description: ELASTOSIL® R 512/70 is a peroxide crosslinking HCR silicone for the manufacture of silicone-insulated safety cables that maintain circuit integrity in case of fire. Properties: The color of the rubber base is white. Therefore, preliminary tests are required to match the RAL color of the masterbatches used in paste or pellet form in the compound (pastel colors). Special features: good mechanical and electrical properties good rheological properties good heat stability in case of fire formation of a ceramic-like layer with high insulation resistance and good mechanical stability without formation of corrosive or toxic gases in case of fire low smoke density remains functional above 950°C in case of fire Application: For flame resistant cable constructions (safety cables). Cables made of ELASTOSIL® R 512/70 have successfully passed standards, like NFC 32070 CR1, DIN 4102 part 12, UL 2196, EN 50200, IEC 60331-11, etc. Ratio: ELASTOSIL® R 512/70-1 : ELASTOSIL® R 512/70-2 Information provided by Wacker Chemie AG.
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Physical Properties	Original Value	Comments

Density	1.26 g/cc	2:8; DIN 53479
	1.32 g/cc	3:7; DIN 53479
	1.35 g/cc	DIN 53479
	1.37 g/cc	4:6; DIN 53479

Mechanical Properties	Original Value	Comments
Hardness, Shore A	70	2:8; DIN 53505
	70	3:7; DIN 53505
	70	4:6; DIN 53505
	75	DIN 53505
Tensile Strength at Break	6.00 MPa	4:6; DIN 53504 S1
	7.00 MPa	3:7; DIN 53504 S1
	8.00 MPa	2:8; DIN 53504 S1
	8.00 MPa	DIN 53504 S1
Elongation at Break	300 %	3:7; DIN 53504 S1
	300 %	4:6; DIN 53504 S1
	320 %	2:8; DIN 53504 S1
	380 %	DIN 53504 S1
Tear Strength	20.0 kN/m	2:8; ASTM D624 B
	20.0 kN/m	3:7; ASTM D624 B
	20.0 kN/m	4:6; ASTM D624 B
	20.0 kN/m	ASTM D624 B

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+14 ohm-cm	2:8; DIN IEC 93
	1.00e+14 ohm-cm	3:7; DIN IEC 93
	1.00e+14 ohm-cm	4:6; DIN IEC 93
	1.00e+14 ohm-cm	DIN IEC 93
Dielectric Constant	2.8	2:8; DIN VDE 0303
	3.0	3:7; DIN VDE 0303
	3.0	4:6; DIN VDE 0303
	3.2 @Frequency 50 Hz	DIN VDE 0303
Dielectric Strength	16.0 kV/mm	4:6; DIN IEC 243-1
	19.0 kV/mm	2:8; DIN IEC 243-1
	20.0 kV/mm	3:7; DIN IEC 243-1
	25.0 kV/mm	DIN IEC 243-1

Descriptive Properties
Appearance	opaque

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