Röchling Glastic Grade HT250 Composite Material

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Röchling Glastic Grade HT250 Composite Material
Categories:	Other Engineering Material
Material Notes:	High Hot Compressive Strength Low Thermal Conductivity Oil and Moisture Resistant Reduces Heat Loss Helps Control Temperature Faster Mold Startup Grade HT250 is a high compressive strength, heat-resistant composite material. Finished to a close thickness tolerance, it is ideal for insulation between the fold and the press or within the mold itself. It is completely asbestos-free and rugged to withstand rough handling during installation. It is easily cut and chained with standard metal working equipment. Diamond cutting tools are recommended for long life. Information provided by Röchling.
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Physical Properties	Metric	English	Comments

Density	2.00 g/cc	0.0723 lb/in³	ASTM D792
Water Absorption	0.15 %	0.15 %	ASTM D570

Mechanical Properties	Metric	English	Comments
Flexural Strength	300 MPa	43500 psi	ASTM D790
Compressive Strength	450 MPa @Temperature 180 °C	65200 psi @Temperature 356 °F	ASTM D695
	600 MPa @Temperature 23.0 °C	87000 psi @Temperature 73.4 °F	ASTM D695

Electrical Properties	Metric	English	Comments
Dielectric Strength	12.0 kV/mm	305 kV/in	ASTM D149

Thermal Properties	Metric	English	Comments
CTE, linear	13.0 µm/m-°C	7.22 µin/in-°F	Across Surface; ASTM D696
	116 µm/m-°C	64.4 µin/in-°F	Across Thickness; ASTM D696
Thermal Conductivity	0.230 W/m-K	1.60 BTU-in/hr-ft²-°F	ASTM C177
Maximum Service Temperature, Air	250 °C	482 °F	Continuous
	400 °C	752 °F	Max

Descriptive Properties
Color	Brown

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