Covestro Makrolon® SL sheet Polycarbonate

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Covestro Makrolon® SL sheet Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC)
Material Notes:	UV resistant sign grade Makrolon® SL Sign Grade sheet is a polycarbonate product with an advanced UV resistance technology that promotes long lasting outdoor weathering performance. It features outstanding impact strength, excellent dimensional stability, high temperature resistance, and high clarity. This lightweight thermoformable sheet is also easy to fabricate and decorate. Makrolon SL is offered in clear, a wide range of standard sign colors, or can be custom matched to any color. The product, available in either sheet or reels, has a proven track record of outstanding performance in extreme environments and meets the UL 879 standard for electric sign components. A ten (10) year limited product warranty is available for both clear and colors for breakage resistance. Clear sheet is also covered for weathering resistance. Applications: Flat and formed sign faces and channel letters Information provided by Covestro
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Physical Properties	Metric	English	Comments

Specific Gravity	1.20 g/cc	1.20 g/cc	ASTM D792
Water Absorption	0.15 % @Time 86400 sec	0.15 % @Time 24.0 hour	ASTM D570

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	70	70	ASTM D785
Hardness, Rockwell R	118	118	ASTM D785
Tensile Strength, Ultimate	65.5 MPa	9500 psi	ASTM D638
Tensile Strength, Yield	62.1 MPa	9010 psi	ASTM D638
Elongation at Break	110 %	110 %	ASTM D638
Tensile Modulus	2.34 GPa	339 ksi	ASTM D638
Flexural Strength	93.1 MPa	13500 psi	ASTM D790
Flexural Modulus	2.38 GPa	345 ksi	ASTM D790
Compressive Strength	86.2 MPa	12500 psi	ASTM D695
Compressive Modulus	2.38 GPa	345 ksi	ASTM D695
Poissons Ratio	0.38	0.38	ASTM E132
Shear Modulus	0.786 GPa	114 ksi	ASTM D732
Shear Strength	41.4 MPa	6000 psi	Yield; ASTM D732
	68.9 MPa	10000 psi	Break; ASTM D732
Izod Impact, Notched	9.61 J/cm @Thickness 3.17 mm	18.0 ft-lb/in @Thickness 0.125 in	ASTM D256
Izod Impact, Unnotched	32.0 J/cm @Thickness 3.17 mm	60.0 ft-lb/in @Thickness 0.125 in	no failure; ASTM D256
Impact Test	>= 63.7 J @Thickness 3.17 mm	>= 47.0 ft-lb @Thickness 0.125 in	ASTM D3763

Electrical Properties	Metric	English	Comments
Volume Resistivity	8.20e+16 ohm-cm	8.20e+16 ohm-cm	ASTM D257
Dielectric Constant	2.96 @Frequency 10 Hz	2.96 @Frequency 10 Hz	ASTM D 150
	3.17 @Frequency 60 Hz	3.17 @Frequency 60 Hz	ASTM D 150
Dielectric Strength	15.0 kV/mm @Thickness 3.17 mm	381 kV/in @Thickness 0.125 in	ASTM D149
Dissipation Factor	0.00090 @Frequency 60 Hz	0.00090 @Frequency 60 Hz	ASTM D150
Arc Resistance	10 sec	10 sec	Stainless Steel Strip Electrode; ASTM D495
	120 sec	120 sec	Tungsten Electrodes; ASTM D495

Thermal Properties	Metric	English	Comments
CTE, linear	67.5 µm/m-°C	37.5 µin/in-°F	ASTM D696
Thermal Conductivity	0.195 W/m-K	1.35 BTU-in/hr-ft²-°F	ASTM C177
Deflection Temperature at 0.46 MPa (66 psi)	142 °C	288 °F	ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)	132 °C	270 °F	ASTM D648
Brittleness Temperature	93.3 °C	200 °F	ASTM D746
Flammability, UL94	HB @Thickness 1.52 mm	HB @Thickness 0.0598 in

Optical Properties	Metric	English	Comments
Refractive Index	1.586	1.586	ASTM D542
Transmission, Visible	27 % @Thickness 3.00 mm	27 % @Thickness 0.118 in	B59 Whtie; ASTM D1003
	27 % @Thickness 3.81 mm	27 % @Thickness 0.150 in	B54 White; ASTM D1003
	27 % @Thickness 4.50 mm	27 % @Thickness 0.177 in	B54 White; ASTM D1003
	86 % @Thickness 3.00 mm	86 % @Thickness 0.118 in	Clear; ASTM D1003

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PCOVEST0856 / 202639

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