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Makrolon® M820 GF

polycarbonate; MVR (300 °C/1.2 kg) 3.5 cm³/10 min; high viscosity; 20 % glass fiber reinforced; biocompatible according to many ISO 10993-1 test requirements; suitable for medical devices

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Product Types

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Material

Plastics
Medical, Dimensionally stable

General Characterization

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Storage Conditions

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Technical Properties & Datasheets

Property Name Standard Test condition Unit Value
Barrel Temperatures - Front - °C 290 - 330
Barrel Temperatures - Middle - °C 280 - 320
Barrel Temperatures - Nozzle - °C 290 - 330
Barrel Temperatures - Rear - °C 270 - 290
Dry Air Drying Temperature - °C 120
Dry Air Drying Time - h 2 - 3
Hold Pressure (% of injection pressure) - % 50 - 75
Melt temperatures - °C 290 - 330
Moisture Content max. (%) - % <=0.2
Mold Temperatures - °C 80 - 120
Peripheral Screw Speed - m/s 0.05 - 0.2
Plastic Back Pressure (specific) - bar 50 - 120
Shot-to-Cylinder Size - % 30 - 70
Standard Melt temperature - °C 310
Vent Depth - mm 0.0025 - 0.075
Property Name Standard Test condition Unit Value
Burning behavior UL 94 UL 94 3.0 mm Class V-1 (Covestro Test)
Burning behavior UL 94 (1.5 mm) UL 94 Class V-2 (Covestro Test)
Coefficient of linear thermal expansion, normal ISO 11359-1,-2 23 to 55 °C 10^-4^/K 0.65
Coefficient of linear thermal expansion, parallel ISO 11359-1,-2 23 to 55 °C 10^-4^/K 0.3
Temperature of deflection under load ISO 75-1,-2 0.45 MPa °C 147
Temperature of deflection under load ISO 75-1,-2 1.80 MPa °C 142
Vicat softening temperature ISO 306 50 N; 120 °C/h °C 151
Vicat softening temperature ISO 306 50 N; 50 °C/h °C 150
Property Name Standard Test condition Unit Value
Flexural modulus ISO 178 2 mm/min MPa 5700
Flexural strength ISO 178 2 mm/min MPa 155
Izod impact strength ISO 180/U -30 °C kJ/m² 50
Izod impact strength ISO 180/U 23 °C kJ/m² 50
Izod notched impact strength ISO 21305/based on ISO 180/A 23 °C/ 3 mm kJ/m² 10
Izod notched impact strength ISO 21305/based on ISO 180/A -30 °C/ 3 mm kJ/m² 8
Nominal strain at break ISO 527-1,-2 5 mm/min % 4
Tensile modulus ISO 527-1,-2 1 mm/min MPa 5800
Yield strain ISO 527-1,-2 5 mm/min % 3
Yield stress ISO 527-1,-2 5 mm/min MPa 91
Property Name Standard Test condition Unit Value
Melt viscosity b.o. ISO 11443-A 1000 s^-1^/ 300 °C Pa*s 650
Melt volume-flow rate ISO 1133 300 °C/ 1.2 kg cm³/10 min 3
Molding shrinkage, normal ISO 294-4 60x60x2 mm % 0.5
Molding shrinkage, parallel ISO 294-4 60x60x2 mm % 0.3
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 110
Property Name Standard Test condition Unit Value
Density ISO 1183-1 kg/m³ 1340
Water absorption (equilibrium value) ISO 62 23 °C; 50 % r. h. % 0.11
Water absorption (saturation value) ISO 62 Water at 23 °C % 0.28

Downloads

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

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