Covestro Makrolon® GP Pebble sheet Polycarbonate

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Covestro Makrolon® GP Pebble sheet Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC)
Material Notes:	Pebble textured Makrolon® GP Pebble sheet is a translucent, UV stabilized, polycarbonate product with a pebble texture on one side. This unique pebble texture is useful in obscuring vision, reducing glare, and helps to hide the appearance of surface scratches. The textured product features outstanding impact strength, superior dimensional stability, high temperature resistance, and flame resistance. Makrolon GP Pebble sheet is offered with a five (5) year Limited Product Warranty against breakage. Applications: Privacy glazing, decorative glazing, awnings, skylights, shower doors, factory over-glazing, lighting covers Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	1.20 g/cc	ASTM D792
Water Absorption	0.15 % @Time 86400 sec	ASTM D570

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	70	ASTM D785
Hardness, Rockwell R	118	ASTM D785
Tensile Strength at Break	65.5 MPa	ASTM D638
Tensile Strength, Yield	62.1 MPa	ASTM D638
Elongation at Break	110 %	ASTM D638
Tensile Modulus	2340 MPa	ASTM D638
Flexural Strength	93.1 MPa	ASTM D790
Flexural Modulus	2380 MPa	ASTM D790
Compressive Strength	86.2 MPa	ASTM D695
Compressive Modulus	345000 psi	ASTM D695
Poissons Ratio	0.38	ASTM E132
Shear Modulus	114 ksi	ASTM D732
Shear Strength	6.00 ksi	Yield; ASTM D732
	10.0 ksi	Break; ASTM D732
Izod Impact, Notched	18.0 ft-lb/in @Thickness 3.17 mm	ASTM D256
Izod Impact, Unnotched	60.0 ft-lb/in @Thickness 3.17 mm	no failure; ASTM D256
Impact Test	>= 47.0 ft-lb @Thickness 3.17 mm	ASTM D3763

Electrical Properties	Original Value	Comments
Volume Resistivity	8.20e+16 ohm-cm	ASTM D257
Dielectric Constant	2.96 @Frequency 10 Hz	ASTM D 150
	3.17 @Frequency 60 Hz	ASTM D 150
Dielectric Strength	15.0 kV/mm @Thickness 3.17 mm	ASTM D149
Dissipation Factor	0.00090 @Frequency 60 Hz	ASTM D150
Arc Resistance	10 sec	Stainless Steel Strip Electrode; ASTM D495
	120 sec	Tungsten Electrodes; ASTM D495

Thermal Properties	Original Value	Comments
CTE, linear	37.5 µin/in-°F	ASTM D696
Thermal Conductivity	1.35 BTU-in/hr-ft²-°F	ASTM C177
Deflection Temperature at 0.46 MPa (66 psi)	142 °C	ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)	132 °C	ASTM D648
Brittleness Temperature	200 °F	ASTM D746
Flammability, UL94	HB @Thickness 1.52 mm

Optical Properties	Original Value	Comments
Refractive Index	1.586	ASTM D542
Transmission, Visible	86 % @Thickness 3.00 mm	ASTM D1003

Descriptive Properties
Shading Coefficient	0.97	NFRC 100-2010
U-value	0.85 BTU/hr-ft2-°F	0.236", summer, NFRC 100-2010
	0.92 BTU/hr-ft2-°F	0.236", winter, NFRC 100-2010

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PCOVEST0831 / 202614

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