Polycarbonate

Makrolon® 2458

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

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Processes

Injection Mold Tooling & Parts

Features

Biocompatible
Ethylene Oxide Sterilizable
Good Mold Release
Low Viscosity
Steam Sterilizable

Applications

Medical Devices
Medical/Healthcare Applications

Properties

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Performance

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Mechanical	Nominal Value	Unit	Test Method
Tensile Modulus (73°F)	348000	psi	ISO 527-1/1
Tensile Stress			ISO 527-2/50
Yield, 73°F	9430	psi
Break, 73°F	10200	psi
Tensile Strain			ISO 527-2/50
Yield, 73°F	6.1	%
Break, 73°F	130	%
Nominal Tensile Strain at Break (73°F)	> 50	%	ISO 527-2/50
Tensile Creep Modulus			ISO 899-1
1 hr	319000	psi
1000 hr	276000	psi
Flexural Modulus⁵ (73°F)	341000	psi	ISO 178
Flexural Stress⁵			ISO 178
73°F	14100	psi
3.5% Strain, 73°F	10600	psi
Flexural Strain at Flexural Strength⁶ (73°F)	7.1	%	ISO 178

Thermal	Nominal Value	Unit	Test Method
Deflection Temperature Under Load
66 psi, Unannealed	282	°F	ISO 75-2/B
264 psi, Unannealed	257	°F	ISO 75-2/A
Glass Transition Temperature⁸	295	°F	ISO 11357-2
Vicat Softening Temperature
—	295	°F	ISO 306/B120
—	293	°F	ISO 306/B50
Ball Pressure Test (280°F)	Pass		IEC 60695-10-2
CLTE			ISO 11359-2
Flow : 73 to 131°F	3.6E-5	in/in/°F
Transverse : 73 to 131°F	3.6E-5	in/in/°F
Thermal Conductivity⁹ (73°F)	1.4	Btu·in/hr/ft²/°F	ISO 8302

Electrical	Nominal Value	Unit	Test Method
Surface Resistivity	1.0E+16	ohms	IEC 60093
Volume Resistivity (73°F)	1.0E+16	ohms·cm	IEC 60093
Electric Strength (73°F, 0.0394 in)	860	V/mil	IEC 60243-1
Relative Permittivity			IEC 60250
73°F, 100 Hz	3.10
73°F, 1 MHz	3.00
Dissipation Factor			IEC 60250
73°F, 100 Hz	5.0E-4
73°F, 1 MHz	9.0E-3
Comparative Tracking Index (Solution A)	250	V	IEC 60112

Flammability	Nominal Value	Unit	Test Method
Oxygen Index¹⁰	28	%	ISO 4589-2
Flash Ignition Temperature	896	°F	ASTM D1929
Self Ignition Temperature	1022	°F	ASTM D1929

Optical	Nominal Value	Unit	Test Method
Refractive Index¹¹	1.586		ISO 489
Light Transmittance			ISO 13468-2
39.37 mil	89.0	%
78.74 mil	89.0	%
118.1 mil	88.0	%
157.5 mil	87.0	%
Haze (118.1 mil)	< 0.800	%	ISO 14782

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Makrolon® 2458

Processes

Features

Applications

Properties

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Design Review

Production Begins

Parts Shipped

Injection	Nominal Value	Unit
Drying Temperature – Dry Air Dryer	248	°F
Drying Time – Dry Air Dryer	2.0 to 3.0	hr
Suggested Max Moisture	< 0.020	%
Suggested Shot Size	30 to 70	%
Rear Temperature	482 to 500	°F
Middle Temperature	518 to 536	°F
Front Temperature	536 to 554	°F
Nozzle Temperature	554 to 572	°F
Processing (Melt) Temp	536 to 608	°F
Mold Temperature	176 to 248	°F
Back Pressure	725 to 2180	psi
Vent Depth	9.8E-4 to 3.0E-3	in

Need help finding the right material?

Makrolon® 2458

Processes

Features

Applications

Properties

General

Mechanical

Thermal

Electrical

Flammablility

Optical

Injection

Notes