Covestro Makrolon® CD 2005 Polycarbonate, Optical/Compact Disc Grade

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Covestro Makrolon® CD 2005 Polycarbonate, Optical/Compact Disc Grade (discontinued **)
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Optical Grade
Material Notes:	Injection molding grade with exceptionally good flow, for optical storage media such as CD. Information provided by Bayer. As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and has officially adopted its new name – Covestro. This product was discontinued prior to the separation.
Key Words:	PC
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Physical Properties	Original Value	Comments

Density	1.20 g/cc
Moisture Absorption at Equilibrium	0.15 %	50% RH
Water Absorption at Saturation	0.35 %
	0.35 %
Melt Flow	60 g/10 min @Load 1.20 kg, Temperature 300 °C

Mechanical Properties	Original Value	Comments
Tensile Strength, Yield	60.0 MPa
Elongation at Break	>= 50 %	Nominal
Elongation at Yield	6.0 %
Tensile Modulus	2.30 GPa
Charpy Impact Unnotched	NB

Electrical Properties	Original Value	Comments
Electrical Resistivity	>= 1.00e+15 ohm-cm
Surface Resistance	1.00e+15 ohm
Dielectric Strength	30.0 kV/mm

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	70.0 µm/m-°C @Temperature 20.0 °C
CTE, linear, Transverse to Flow	70.0 µm/m-°C @Temperature 20.0 °C
Deflection Temperature at 0.46 MPa (66 psi)	137 °C
Deflection Temperature at 1.8 MPa (264 psi)	122 °C
Vicat Softening Point	143 °C
Glass Transition Temp, Tg	145 °C
UL RTI, Electrical	75.0 °C @Thickness 0.710 mm
UL RTI, Mechanical with Impact	75.0 °C @Thickness 0.710 mm
UL RTI, Mechanical without Impact	75.0 °C @Thickness 0.710 mm
Flammability, UL94	V-2 @Thickness 0.710 mm

Optical Properties	Original Value	Comments
Refractive Index	1.583	DIN 5026-1
Transmission, Visible	>= 89 % @Thickness 1.00 mm	ISO 489-A

Processing Properties	Original Value	Comments
Melt Temperature	305 - 335 °C

**
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