Covestro Baydur® GS PIR A Polyurethane

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Covestro Baydur® GS PIR A Polyurethane (discontinued **)
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Liquid
Material Notes:	PIR casting system for the production of solid components. Mechanical properties can be varied by adjusting the mixing ratio in the range 1:1-1:2. Information provided by Bayer. As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
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Physical Properties	Metric	English	Comments

Density	1.16 g/cc	0.0419 lb/in³
Water Absorption at Saturation	3.0 %	3.0 %
	3.0 %	3.0 %

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	27.0 MPa	3920 psi
Elongation at Break	18 %	18 %
Tensile Modulus	0.650 GPa	94.3 ksi
Charpy Impact Unnotched	4.60 J/cm²	21.9 ft-lb/in²
Charpy Impact, Notched	1.50 J/cm²	7.14 ft-lb/in²
Tensile Creep Modulus, 1 hour	600 MPa	87000 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	7.00e+13 ohm-cm	7.00e+13 ohm-cm
Surface Resistance	1.00e+13 ohm	1.00e+13 ohm
Dielectric Strength	15.0 kV/mm	381 kV/in
Comparative Tracking Index	600 V	600 V

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	160 µm/m-°C @Temperature 20.0 °C	88.9 µin/in-°F @Temperature 68.0 °F
CTE, linear, Transverse to Flow	160 µm/m-°C @Temperature 20.0 °C	88.9 µin/in-°F @Temperature 68.0 °F
Deflection Temperature at 0.46 MPa (66 psi)	183 °C	361 °F
Deflection Temperature at 1.8 MPa (264 psi)	109 °C	228 °F
Vicat Softening Point	178 °C	352 °F

**
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PBA078 / 26688

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