Röchling GLASTHERM HT250 Insulation Sheet

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Röchling GLASTHERM HT250 Insulation Sheet
Categories:	Polymer; Thermoset; Composite SMC; Filled/Reinforced Thermoset; Polyester, TS
Material Notes:	Glastherm Grade HT250 is a high compressive strength, heat-resistant composite material. It is ideal for insulation between the fold and the press or within the mold itself. Grade HT250 is asbestos-free and rugged to withstand rough handling during installation. Grade HT250 is employed to save energy during pressing and is mainly used in hydraulic, wood and tire presses. Information provided by Glastic Corporation
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Physical Properties	Original Value	Comments

Specific Gravity	2.00 g/cc	ASTM D-792
Water Absorption	0.15 %	% by wt.; ASTM D-570

Mechanical Properties	Original Value	Comments
Flexural Strength	43500 psi	ASTM D-790
Compressive Strength	65200 psi @Temperature 180 °C	ASTM D-695
	87000 psi @Temperature 20.0 °C	ASTM D-695

Electrical Properties	Original Value	Comments
Dielectric Strength	12.0 kV/mm	Perpendicular S/T in Air; ASTM D-149

Thermal Properties	Original Value	Comments
CTE, linear	13.0 µm/m-°C @Temperature 20.0 °C	Across Surface; ASTM D-696
	116 µm/m-°C @Temperature 20.0 °C	Across Thickness; ASTM D-696
Thermal Conductivity	0.230 W/m-K	ASTM C-177
Maximum Service Temperature, Air	482 °F
	752 °F

Descriptive Properties
Standard Color	Light Green
Thickness Tolerance in	± 0.0039	5-10mm
	± 0.006	11-20mm
Thickness Tolerance, %	1	21-50mm

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