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Glastic® UTR


Glastic® UTR is one of our Glastic® laminates and offers a superior combination of electrical and mechanical properties. Made from fiberglass-reinforced thermoset polyester resins, these UL®-recognized sheets blend excellent performance characteristics with economy.



  • Polyester (UP) resin matrix reinforced by fiberglass
  • 1,000 Minutes Track Resistance, Electrically Insulating, Highly Flame Resistant, Low Smoke & Smoke Toxicity, UL® Recognized, and Halogen-Free

Technical Specifications Glastic® UTR

Test MethodUnitGuideline Value
Part Number1491, 1493, 1494, 1495, 1497
NEMA Grade LI 1-1989NEMA LI-1GPO-3
UL Temperature Index - ElectricalUL 746B°C130
UL Temperature Index - MechanicalUL 746B°C160
UL Recognition File NumberE81928
Test MethodUnitGuideline Value
Flexural StrengthASTM D 790psi22,100
Flexural Strength @130°CASTM D 790psi13,100
Compressive StrengthASTM D 695psi33,100
Tensile StrengthASTM D 638psi8,000
Tensile ModulusASTM D 638psi X 1061.7
IZOD Impact Strength (notched)ASTM D 256ft. lb./in.8.9
Shear StrengthASTM D 732psi11,600
Test MethodUnitGuideline Value
Coefficient of Thermal ExpansionASTM D 696(in./in.°C) x 10-52
Thermal ConductivityASTM C 1771.9
Test MethodUnitGuideline Value
Radiant Panel Flame SpreadASTM E 16211
Tunnel Test - Flame SpreadASTM E 84 / UL 72325
Tunnel Test - Smoke DensityASTM E 84 / UL 723115
Flame Resistance - Ignition TimeASTM D 229-IIsec.85
Flame Resistance - Burn TimeASTM D 229-IIsec.49
Cone Calorimeter - Time to IgnitionASTM E 1354sec.109
Cone Calorimeter - Peak Rate of Heat ReleaseASTM E 1354kW/m2168.6
Cone Calorimeter - Heat Release Rate @ 300 sec.ASTM E 1354kW/m277.2
Cone Calorimeter - Caloric ConentASTM E 1354MJ / kg7.13
Cone Calorimeter - Average Smoke Extinction AreaASTM E1354m2 / kg336.1
Specific Optical Density of Smoke - Ds @ 4.0 min. Non-Flaming (Avg.)ASTM E 6620.3
Specific Optical Density of Smoke - Ds @ 4.0 min. Flaming (Avg.)ASTM E 66210.7
Specific Optical Density of Smoke - Dm(corr) Non-Flaming (Avg.)ASTM E 6623.1
UL Subject 94 ( 3/32")UL 94V0
Oxygen IndexASTM D 2863%O235
Specific Optical Density of Smoke - Dm(corr) Flaming (Avg.)ASTM E 662128.4
Test MethodUnitGuideline Value
Carbon Monoxideppm220
Carbon Dioxideppm3,275
Oxides of Nitrogenppm10
Test MethodUnitGuideline Value
Water AbsorptionASTM D 570% by wt.0.4
Specific GravityASTM D 7921.81
Test MethodUnitGuideline Value
Electrical Strength - Perpendicular S/T in AirASTM D 149Vpm450
Electrical Strength - Perpendicular S/T in OilASTM D 149Vpm584
Electrical Strength - Parallel S/S in OilASTM D 149kV47
Arc ResistanceASTM D 495sec.180
Inclined Plane Track Resistance- 1/4" thick @2.5 kVASTM D 2303min.1,000
IEC Track Resistance (CTI)UL 746AV600+
Permittivity, 60 HzASTM D 1504.1
Dissipation Factor, 60 HzASTM D 1500.013
Dissipation Factor, MHzASTM D 1500.010
Permittivity, MHzASTM D 1504.1
Insulation ResistanceASTM D 257Ω x 10123.1


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