Covestro Makrolon® 2458 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® 2458 Polycarbonate, Injection Grade.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

Very easy flowing BgVV- and FDA injection molding grade with easy mold release, for food contact applications, better resistance to hot water.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 %
Linear Mold Shrinkage	0.0050 - 0.0070 cm/cm	0.0050 - 0.0070 in/in	ASTM D955
Melt Flow	19 g/10 min @Load 1.20 kg, Temperature 300 °C	19 g/10 min @Load 2.65 lb, Temperature 572 °F

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	75	75	ASTM D785
Hardness, Rockwell R	118	118	ASTM D785
Tensile Strength, Ultimate	69.0 MPa	10000 psi	ASTM D638
Tensile Strength, Yield	63.0 MPa	9140 psi
Elongation at Break	120 %	120 %	ASTM D638
Elongation at Yield	6.0 %	6.0 %
Tensile Modulus	2.30 GPa	334 ksi
Flexural Yield Strength	83.0 MPa	12000 psi	at 5% strain; ASTM D790
Flexural Modulus	2.30 GPa	334 ksi	ASTM D790
Izod Impact, Notched	7.50 J/cm @Thickness 3.20 mm	14.1 ft-lb/in @Thickness 0.126 in	ASTM D256
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	Comments
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
Specific Heat Capacity	1.17 J/g-°C	0.280 BTU/lb-°F	ASTM D2766
Thermal Conductivity	0.200 W/m-K	1.39 BTU-in/hr-ft²-°F	ASTM C177
Deflection Temperature at 0.46 MPa (66 psi)	137 °C	279 °F
Deflection Temperature at 1.8 MPa (264 psi)	124 °C	255 °F
Vicat Softening Point	144 °C	291 °F
Glass Transition Temp, Tg	148 °C	298 °F
UL RTI, Electrical	125 °C	257 °F
UL RTI, Mechanical with Impact	115 °C	239 °F
UL RTI, Mechanical without Impact	125 °C	257 °F
Flammability, UL94	V-2 @Thickness 2.60 mm	V-2 @Thickness 0.102 in
	V-2 @Thickness 1.60 mm	V-2 @Thickness 0.0630 in
Oxygen Index	26 %	26 %

Optical Properties	Metric	English	Comments
Refractive Index	1.584	1.584
Haze	1.0 % @Thickness 3.20 mm	1.0 % @Thickness 0.126 in	ASTM D1003
Transmission, Visible	88 % @Thickness 3.20 mm	88 % @Thickness 0.126 in	ASTM D1003

Electrical Properties	Metric	English	Comments
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
Arc Resistance	120 sec	120 sec	Tungsten Electrodes; ASTM D495
Comparative Tracking Index	275 V	275 V
Hot Wire Ignition, HWI	30 - 60 sec @Thickness 3.00 mm	30 - 60 sec @Thickness 0.118 in	UL Rating PLC 2 (30-60 sec)
High Amp Arc Ignition, HAI	60 - 120 arcs @Thickness 3.00 mm	60 - 120 arcs @Thickness 0.118 in	UL Rating PLC 1 (60-120 arcs)
High Voltage Arc-Tracking Rate, HVTR	<= 10.0 mm/min @Thickness 3.00 mm	<= 0.394 in/min @Thickness 0.118 in	UL Rating PLC 0 (<10 mm/min.)

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