Covestro Makrolon® 2458 Polycarbonate, Injection Grade

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USP Class VI Approved Adhesives for Medical Device Applications
Master Bond’s biocompatible adhesives are designed to meet the needs of medical device manufacturers. Compounds withstand various types of sterilization methods.

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Covestro Makrolon® 2458 Polycarbonate, Injection Grade
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Unreinforced, Flame Retardant
Material Notes:	MVR (300 °C/1.2 kg) 19 cm³/10 min; medical devices; suitable for ETO and steam sterilization at 121°C; biocompatible according to many ISO 10993-1 test requirements; low viscosity; easy release; injection molding - melt temperature 280 - 320 °C; available in transparent and opaque colors As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
Key Words:	PC
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Physical Properties	Original Value	Comments

Bulk Density	0.660 g/cc	Pellets; ISO 60
Density	1.20 g/cc	ISO 1183
Moisture Absorption at Equilibrium	0.12 %	50% RH; ISO 62
Water Absorption at Saturation	0.30 %	ISO 62
Linear Mold Shrinkage	0.0050 - 0.0070 cm/cm	parallel/normal; b.o. ISO 2577
Linear Mold Shrinkage, Flow	0.0065 cm/cm	60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse	0.0070 cm/cm	60x60x2 mm; 500 bar; ISO 294-4
Melt Flow	20 g/10 min @Load 1.20 kg, Temperature 300 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Puncture Resistance	5100 N @Temperature 23.0 °C	ISO 6603-2
	6000 N @Temperature -30.0 °C	ISO 6603-2
Ball Indentation Hardness	115 MPa	ISO 2039-1
Tensile Strength at Break	70.0 MPa	50 mm/min; ISO 527-1,-2
Tensile Strength, Yield	65.0 MPa	50 mm/min; ISO 527-1,-2
Elongation at Break	>= 50 %	Nominal, 50 mm/min; ISO 527-1,-2
	130 %	50 mm/min; b.o. ISO 527-1,-2
Elongation at Yield	6.1 %	50 mm/min; ISO 527-1,-2
Tensile Modulus	2.40 GPa	50 mm/min; ISO 527-1,-2
Flexural Strength	97.0 MPa	2 mm/min; ISO 178
Flexural Yield Strength	73.0 MPa	at 3.5% strain; ISO 178
Flexural Modulus	2.35 GPa	ISO 178
Flexural Strain at Yield	7.1 %	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	15.0 kJ/m² @Thickness 3.00 mm, Temperature -30.0 °C	ISO 7391/b.o. ISO 180-A
	65.0 kJ/m² @Thickness 3.00 mm, Temperature 23.0 °C	ISO 7391/b.o. ISO 180-A
Charpy Impact Unnotched	NB @Temperature 23.0 °C	ISO 179-1eU
	NB @Temperature -30.0 °C	ISO 179-1eU
	NB @Temperature -60.0 °C	ISO 179-1eU
Charpy Impact, Notched	1.40 J/cm² @Thickness 3.00 mm, Temperature -30.0 °C	ISO 7391/b.o. ISO 179-1eA
	6.50 J/cm² @Thickness 3.00 mm, Temperature 23.0 °C	ISO 7391/b.o. ISO 179-1eA
Puncture Energy	55.0 J @Temperature 23.0 °C	ISO 6603-2
	65.0 J @Temperature -30.0 °C	ISO 6603-2
Tensile Creep Modulus, 1 hour	2200 MPa	ISO 899-1
Tensile Creep Modulus, 1000 hours	1900 MPa	ISO 899-1

Electrical Properties	Original Value	Comments
Surface Resistance	1.00e+16 ohm	IEC 60093
Dielectric Constant	3.0 @Frequency 1e+6 Hz	IEC 60250
	3.1 @Frequency 100 Hz	IEC 60250
Dielectric Strength	34.0 kV/mm	1 mm; IEC 60243-1
Dissipation Factor	0.00050 @Frequency 100 Hz	IEC 60250
	0.0090 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	250 V	Solution A; IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	65.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
CTE, linear, Transverse to Flow	65.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
Specific Heat Capacity	1.17 J/g-°C	ASTM D2766
Thermal Conductivity	0.200 W/m-K	ISO 8302
Hot Ball Pressure Test	138 °C	IEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi)	139 °C	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	125 °C	ISO 75-1,-2
Vicat Softening Point	145 °C	50 N, 50°C/h; ISO 306
	145 °C @Load 5.10 kg	120°C/h; ISO 306
Glass Transition Temp, Tg	146 °C	ISO 11357-1,-2
Flash Point	480 °C	ignition; ASTM D1929
	550 °C	self ignition; ASTM D1929
Oxygen Index	28 %	Method A; ISO 4589-2

Optical Properties	Original Value	Comments
Refractive Index	1.586	Procedure A; ISO 489
Haze	<= 0.80 % @Thickness 3.00 mm	ISO 14782
Transmission, Visible	87 % @Thickness 4.00 mm	ISO 13468-2
	88 % @Thickness 3.00 mm	ISO 13468-2
	89 % @Thickness 1.00 mm	ISO 13468-2
	89 % @Thickness 2.00 mm	ISO 13468-2

Processing Properties	Original Value	Comments
Melt Temperature	280 °C	Injection; ISO 294
Mold Temperature	80.0 °C	Injection; ISO 294
Injection Velocity	200 mm/sec	ISO 294

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