Pyrotek ISOMAG® 175 Structural Insulation Board

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Pyrotek ISOMAG® 175 Structural Insulation Board
Categories:	Ceramic; Oxide; Magnesium Oxide; Silicon Oxide
Material Notes:	Isomag® 70 is a high strength insulating board suitable as an electrical insulator or a thermal barrier material in a variety of industrial applications. Its magnesia silicate based formulation provides a product with an outstanding combination of high compressive strength and low thermal conductivity. Incombustible, Isomag® 175 is totally free of asbestos and may be cut or machined with readily available tools. Applications Platen press insulation Arc chutes Resistor grids Induction furnaces Pot pads Buss support insulation Foundry bottom boards Blow boards Advantages Low heat loss at higher temperatures Low shrinkage at temperature use limit High temperature rating Asbestos and ceramic fiber free Information provided by Pyrotek.
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Physical Properties	Original Value	Comments

Specific Gravity	1.55 g/cc
Density	1.54 g/cc
Water Absorption	<= 0.50 %	with silicone treatment
	25 %
Open Porosity	44.1 %

Mechanical Properties	Original Value	Comments
Flexural Strength	27.6 MPa
Compressive Strength	37.9 MPa
	27.0 MPa @Strain 5.0 %, Temperature 500 °C
Izod Impact, Notched	0.900 ft-lb/in

Electrical Properties	Original Value	Comments
Volume Resistivity	6.90e+14 ohm-cm
Dielectric Constant	4.1 @Frequency 1000 Hz
Dielectric Strength	9.80 kV/mm
Dielectric Breakdown	28100 V
Dissipation Factor	0.050
Arc Resistance	292 sec

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.270 W/m-K @Temperature 195 °C
	0.280 W/m-K @Temperature 315 °C
	0.340 W/m-K @Temperature 600 °C
Maximum Service Temperature, Air	1000 °C	Continuous use
	1050 °C
Flammability, UL94	V-0	V-0
Shrinkage	1.5 % @Temperature 1000 °C	Linear
	4.3 % @Temperature 1000 °C	Thickness

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CPYRO080 / 1818

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