Covestro Makrolon® 6557 Polycarbonate, Injection Grade

Category	Polymer , Thermoplastic , Polycarbonate (PC) , Polycarbonate, Unreinforced, Flame Retardant
Manufacturer	Covestro
Trade Name	Makrolon®
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Covestro Makrolon® 6557 Polycarbonate, Injection Grade.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

Medium viscosity, flame retardant injection molding grade with easy mold release, UV-stabilized.Information provided by Bayer.As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.

Physical Properties	Metric	English	Comments
Density	1.20 g/cc	0.0434 lb/in³
Water Absorption	0.35 %	0.35 %	Saturation in water
Moisture Absorption at Equilibrium	0.15 %	0.15 %	Equilibrium at 50% RH
Water Absorption at Saturation	0.35 %	0.35 %
Melt Flow	9.5 g/10 min @Load 1.20 kg, Temperature 300 °C	9.5 g/10 min @Load 2.65 lb, Temperature 572 °F

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	63.0 MPa	9140 psi
Elongation at Break	>= 50 %	>= 50 %	Nominal
Elongation at Yield	6.0 %	6.0 %
Tensile Modulus	2.40 GPa	348 ksi
Charpy Impact Unnotched	NB	NB
Tensile Creep Modulus, 1 hour	2200 MPa	319000 psi
Tensile Creep Modulus, 1000 hours	1900 MPa	276000 psi

Thermal Properties	Metric	English
CTE, linear, Parallel to Flow	70.0 µm/m-°C @Temperature 20.0 °C	38.9 µin/in-°F @Temperature 68.0 °F
CTE, linear, Transverse to Flow	70.0 µm/m-°C @Temperature 20.0 °C	38.9 µin/in-°F @Temperature 68.0 °F
Deflection Temperature at 0.46 MPa (66 psi)	136 °C	277 °F
Deflection Temperature at 1.8 MPa (264 psi)	129 °C	264 °F
Vicat Softening Point	145 °C	293 °F
Glass Transition Temp, Tg	148 °C	298 °F
Flammability, UL94	V-2 @Thickness 1.60 mm	V-2 @Thickness 0.0630 in
	V-0 @Thickness 3.00 mm	V-0 @Thickness 0.118 in
Oxygen Index	35 %	35 %

Optical Properties	Metric	English	Comments
Refractive Index	1.586	1.586	DIN 5026-1
Transmission, Visible	88 % @Thickness 1.00 mm	88 % @Thickness 0.0394 in	ISO 489-A

Electrical Properties	Metric	English
Electrical Resistivity	>= 1.00e+15 ohm-cm	>= 1.00e+15 ohm-cm
Surface Resistance	1.00e+15 ohm	1.00e+15 ohm
Dielectric Constant	2.9 @Frequency 1e+6 Hz	2.9 @Frequency 1e+6 Hz
	3.0 @Frequency 100 Hz	3.0 @Frequency 100 Hz
Dielectric Strength	30.0 kV/mm	762 kV/in
Dissipation Factor	0.0010 @Frequency 100 Hz	0.0010 @Frequency 100 Hz
	0.010 @Frequency 1e+6 Hz	0.010 @Frequency 1e+6 Hz
Comparative Tracking Index	200 V	200 V

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