Röchling GLASTHERM HT Insulation Sheet
Categories: Polymer; Thermoset; Composite SMC; Filled/Reinforced Thermoset; Polyester, TS

Material Notes: Glastherm Grade HT 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 HT is completely asbestos-free and is rugged to withstand rough handling during installation. Features of Grade HT include
  • High hot compressive strength
  • Low thermal conductivity
  • Oil and moisture resistant
  • Reduces heat loss
  • Helps control temperature
  • Faster mold startup
  • Information provided by Glastic Corporation

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    Physical PropertiesMetricEnglishComments
    Density 1.97 g/cc0.0712 lb/in³ASTM D-792
    Water Absorption 0.20 %0.20 %% by wt.; ASTM D-570
    Mechanical PropertiesMetricEnglishComments
    Flexural Strength 214 MPa31000 psiASTM D-790
    Compressive Strength  117 MPa
    @Temperature 288 °C
    17000 psi
    @Temperature 550 °F
    ASTM D-695
     124 MPa
    @Temperature 200 °C
    18000 psi
    @Temperature 392 °F
    ASTM D-695
     186 MPa
    @Temperature 150 °C
    27000 psi
    @Temperature 302 °F
    ASTM D-695
     338 MPa
    @Temperature 23.9 °C
    49000 psi
    @Temperature 75.0 °F
    ASTM D-695
    Compressive Modulus 12.4 GPa1800 ksiASTM D-695
    Izod Impact, Notched 4.27 J/cm8.00 ft-lb/inASTM D-256
    Electrical PropertiesMetricEnglishComments
    Dielectric Strength 2.00 kV/mm50.8 kV/inPerpendicular S/T in Air; ASTM D-149
    Thermal PropertiesMetricEnglishComments
    CTE, linear  22.1 µm/m-°C
    @Temperature 20.0 °C
    12.3 µin/in-°F
    @Temperature 68.0 °F
    Across Surface; ASTM D-696
     116.2 µm/m-°C
    @Temperature 20.0 °C
    64.56 µin/in-°F
    @Temperature 68.0 °F
    Across Thickness; ASTM D-696
    Thermal Conductivity 0.270 W/m-K1.87 BTU-in/hr-ft²-°FASTM C-177
    Maximum Service Temperature, Air 211 °C412 °F
     288 °C550 °F
    Flammability, UL94 HB
    @Thickness 23.9 mm
    @Thickness 0.940 in
    Descriptive Properties
    Standard ColorWhite/Green
    Thickness Tolerance in± 0.002

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