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Makrolon® MD4820

medium viscosity; MVR (300 °C/1.2 kg) 10 cm³/10 min; easy release; impact modified; 20 % glass fiber reinforced; improved chemical resistance compared to standard Makrolon grades; housing parts; Information technology

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Technical Properties & Datasheets

Property Name Standard Test condition Unit Value
Coefficient of linear thermal expansion, normal ISO 11359-1,-2 23 to 55 °C 10^-4^/K 0.7
Coefficient of linear thermal expansion, parallel ISO 11359-1,-2 23 to 55 °C 10^-4^/K 0.27
Temperature of deflection under load ISO 75-1,-2 0.45 MPa °C 143
Temperature of deflection under load ISO 75-1,-2 1.80 MPa °C 138
Vicat softening temperature ISO 306 50 N; 120 °C/h °C 147
Vicat softening temperature ISO 306 50 N; 50 °C/h °C 144
Property Name Standard Test condition Unit Value
Charpy notched impact strength ISO 7391/b.o. ISO 179/1eA 23 °C kJ/m² 11 C
Charpy notched impact strength ISO 7391/b.o. ISO 179/1eA -30 °C kJ/m² 7 C
Flexural modulus ISO 178 2 mm/min MPa 5430
Flexural strength ISO 178 2 mm/min MPa 137
Izod notched impact strength ISO 7391/b.o. ISO 180/A 23 °C kJ/m² 11 C
Puncture energy ISO 6603-2 23 °C J 6
Puncture impact properties - maximum force ISO 6603-2 23 °C N 1000
Strain at break ISO 527-1,-2 5 mm/min % 2.8
Stress at break ISO 527-1,-2 5 mm/min MPa 80
Tensile modulus ISO 527-1,-2 1 mm/min MPa 5700
Yield strain ISO 527-1,-2 5 mm/min % 2.4
Yield stress ISO 527-1,-2 5 mm/min MPa 82
Property Name Standard Test condition Unit Value
Melt volume-flow rate ISO 1133 300 °C/ 1.2 kg cm³/10 min 10
Molding shrinkage, parallel/normal b.o. ISO 2577 Value range based on general practical experience % 0.2 - 0.5
Property Name Standard Test condition Unit Value
Injection molding - Melt temperature ISO 294 °C 280 - 320
Injection molding - Mold temperature ISO 294 °C 80 - 110
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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