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Makrolon® TC421

polycarbonate; flame retardant; high thermal conductivity; light components; LED heat sinks (metal replacement); components for heat dissipation

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Technical Properties & Datasheets

Property Name Standard Test condition Unit Value
Dry Air Drying Temperature - °C 110
Dry Air Drying Time - h 4
Mold Temperatures - °C 90 - 110
Property Name Standard Test condition Unit Value
Burning behavior UL 94 UL 94 3.0 mm Class V-0
Coefficient of linear thermal expansion, normal ISO 11359-1,-2 23 to 55 °C 10^-4^/K 50
Coefficient of linear thermal expansion, parallel ISO 11359-1,-2 23 to 55 °C 10^-4^/K 30
Glow wire test (GWFI) IEC 60695-2-12 1.5 mm °C 960
Glow wire test (GWFI) IEC 60695-2-12 3.0 mm °C 960
Glow wire test (GWIT) IEC 60695-2-13 1.5 mm °C 850
Glow wire test (GWIT) IEC 60695-2-13 3.0 mm °C 875
Temperature of deflection under load ISO 75-1,-2 0.45 MPa °C 130
Temperature of deflection under load ISO 75-1,-2 1.80 MPa °C 124
Vicat softening temperature ISO 306 50 N; 50 °C/h °C 130
Property Name Standard Test condition Unit Value
Charpy impact strength ISO 179/1eU 23 °C kJ/m² 7
Flexural modulus ISO 178 2 mm/min MPa 7000
Flexural strain at flexural strength ISO 178 2 mm/min % 1.4
Flexural strength ISO 178 2 mm/min MPa 65
Strain at break ISO 527-1,-2 5 mm/min % 1.3
Stress at break ISO 527-1,-2 5 mm/min MPa 45
Tensile modulus ISO 527-1,-2 1 mm/min MPa 6500
Yield strain ISO 527-1,-2 50 mm/min % 0
Yield stress ISO 527-1,-2 50 mm/min MPa 0
Property Name Standard Test condition Unit Value
Melt viscosity b.o. ISO 11443-A 1000 s^-1^/ 330 °C Pa*s 90
Melt viscosity b.o. ISO 11443-A 1000 s^-1^/ 300 °C Pa*s 150
Molding shrinkage, normal ISO 294-4 60x60x2 mm % 0.1 - 0.2
Molding shrinkage, parallel ISO 294-4 60x60x2 mm % 0.1 - 0.2
Property Name Standard Test condition Unit Value
Volume resistivity IEC 60093 Ohm*m 1E+02
Property Name Standard Test condition Unit Value
Injection molding - Injection velocity ISO 294 mm/s 200
Injection molding - Melt temperature ISO 294 °C 310
Injection molding - Mold temperature ISO 294 °C 85
Property Name Standard Test condition Unit Value
Density ISO 1183-1 kg/m³ 1330

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Technical Data Sheet
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Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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