
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
Processes
- Injection Mold Tooling & Parts
Features
- Biocompatible
- Ethylene Oxide Sterilizable
- Good Mold Release
- Low Viscosity
- Steam Sterilizable
Applications
- Medical Devices
- Medical/Healthcare Applications
Properties
General | ||||
Material Status
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Availability
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Features
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Uses
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Agency Ratings
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RoHS Compliance
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Appearance
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Processing Method
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Multi-Point Data
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ISO Shortname
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Physical |
Nominal Value
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Unit
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Test Method
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Density (73°F)
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1.20
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g/cm³
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ISO 1183 |
Apparent (Bulk) Density 3
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0.66
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g/cm³
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ISO 60 |
Melt Mass-Flow Rate (MFR) (300°C/1.2 kg)
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20
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g/10 min
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ISO 1133 |
Melt Volume-Flow Rate (MVR) (300°C/1.2 kg)
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19
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cm³/10min
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ISO 1133 |
Molding Shrinkage
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Across Flow
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0.50 to 0.70
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%
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ISO 2577 |
Flow
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0.50 to 0.70
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%
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ISO 2577 |
Across Flow : 536°F, 0.0787 in 4
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0.70
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%
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ISO 294-4 |
Flow : 0.0787 in 4
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0.65
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%
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ISO 294-4 |
Water Absorption
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ISO 62 | ||
Saturation, 73°F
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0.30
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%
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Equilibrium, 73°F, 50% RH
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0.12
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%
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Mechanical |
Nominal Value
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Unit
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Test Method
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Tensile Modulus (73°F)
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348000
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psi
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ISO 527-1/1 |
Tensile Stress
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ISO 527-2/50 | ||
Yield, 73°F
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9430
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psi
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Break, 73°F
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10200
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psi
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Tensile Strain
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ISO 527-2/50 | ||
Yield, 73°F
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6.1
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%
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Break, 73°F
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130
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%
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Nominal Tensile Strain at Break (73°F)
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> 50
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%
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ISO 527-2/50 |
Tensile Creep Modulus
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ISO 899-1 | ||
1 hr
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319000
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psi
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1000 hr
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276000
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psi
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Flexural Modulus 5 (73°F)
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341000
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psi
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ISO 178 |
Flexural Stress 5
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ISO 178 | ||
73°F
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14100
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psi
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3.5% Strain, 73°F
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10600
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psi
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Flexural Strain at Flexural Strength 6 (73°F)
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7.1
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%
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ISO 178 |
Thermal |
Nominal Value
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Unit
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Test Method
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Deflection Temperature Under Load
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66 psi, Unannealed
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282
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°F
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ISO 75-2/B |
264 psi, Unannealed
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257
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°F
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ISO 75-2/A |
Glass Transition Temperature 8
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295
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°F
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ISO 11357-2 |
Vicat Softening Temperature
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—
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295
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°F
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ISO 306/B120 |
—
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293
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°F
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ISO 306/B50 |
Ball Pressure Test (280°F)
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Pass
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IEC 60695-10-2 | |
CLTE
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ISO 11359-2 | ||
Flow : 73 to 131°F
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3.6E-5
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in/in/°F
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Transverse : 73 to 131°F
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3.6E-5
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in/in/°F
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Thermal Conductivity 9 (73°F)
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1.4
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Btu·in/hr/ft²/°F
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ISO 8302 |
Electrical |
Nominal Value
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Unit
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Test Method
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Surface Resistivity
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1.0E+16
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ohms
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IEC 60093 |
Volume Resistivity (73°F)
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1.0E+16
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ohms·cm
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IEC 60093 |
Electric Strength (73°F, 0.0394 in)
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860
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V/mil
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IEC 60243-1 |
Relative Permittivity
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IEC 60250 | ||
73°F, 100 Hz
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3.10
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73°F, 1 MHz
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3.00
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Dissipation Factor
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IEC 60250 | ||
73°F, 100 Hz
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5.0E-4
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73°F, 1 MHz
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9.0E-3
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Comparative Tracking Index (Solution A)
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250
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V
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IEC 60112 |
Flammability |
Nominal Value
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Unit
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Test Method
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Oxygen Index 10
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28
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%
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ISO 4589-2 |
Flash Ignition Temperature
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896
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°F
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ASTM D1929 |
Self Ignition Temperature
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1022
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°F
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ASTM D1929 |
Optical |
Nominal Value
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Unit
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Test Method
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Refractive Index 11
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1.586
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ISO 489 | |
Light Transmittance
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ISO 13468-2 | ||
39.37 mil
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89.0
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%
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78.74 mil
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89.0
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%
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118.1 mil
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88.0
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%
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157.5 mil
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87.0
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%
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Haze (118.1 mil)
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< 0.800
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%
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ISO 14782 |
Injection |
Nominal Value
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Unit
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Drying Temperature – Dry Air Dryer
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248
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°F
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Drying Time – Dry Air Dryer
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2.0 to 3.0
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hr
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Suggested Max Moisture
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< 0.020
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%
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Suggested Shot Size
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30 to 70
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%
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Rear Temperature
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482 to 500
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°F
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Middle Temperature
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518 to 536
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°F
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Front Temperature
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536 to 554
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°F
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Nozzle Temperature
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554 to 572
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°F
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Processing (Melt) Temp
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536 to 608
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°F
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Mold Temperature
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176 to 248
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°F
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Back Pressure
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725 to 2180
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psi
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Vent Depth
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9.8E-4 to 3.0E-3
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in
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Notes
3Pellets
460x60x2mm, 500 bar
50.079 in/min
62.0 mm/min
73 mm
810°C/min
9Across Flow
10Procedure A
11Method A
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