Covestro · Polycarbonate

Makrolon® 2858

Name: Makrolon® 2858
Brand: Covestro

Manufacturer

Covestro

Base polymer

Polycarbonate

Trade family

Makrolon®

Status

active

Technical properties

Melt volume-flow rate, MVR	9 cm³/10min
Temperature	300 °C
Load	1.2 kg
Molding shrinkage, parallel	0.7 %
Molding shrinkage, normal	0.75 %
Tensile modulus	2400 MPa
Yield stress	66 MPa
Yield strain	6.1 %
Nominal strain at break	>50 %
Tensile creep modulus, 1h	2200 MPa
Tensile creep modulus, 1000h	1900 MPa
Charpy impact strength, +23°C	N kJ/m²
Puncture - maximum force, +23°C	5400 N
Puncture - maximum force, -30°C	6300 N
Puncture energy, +23°C	60 J
Puncture energy, -30°C	65 J
Glass transition temperature, 10°C/min	145 °C
Temperature of deflection under load, 1.80 MPa	125 °C
Temperature of deflection under load, 0.45 MPa	137 °C
Vicat softening temperature, 50°C/h 50N	145 °C
Coefficient of linear thermal expansion, parallel	65 E-6/K
Coefficient of linear thermal expansion, normal	65 E-6/K
Burning behavior at thickness h	V-2 class
Thickness tested	0.75 mm
Oxygen index	28 %
Relative permittivity, 100Hz	3.1
Relative permittivity, 1MHz	3
Dissipation factor, 100Hz	5 E-4
Dissipation factor, 1MHz	90 E-4
Volume resistivity	>1E13 Ohm*m
Surface resistivity	>1E15 Ohm
Electric strength	34 kV/mm
Comparative tracking index	250
Water absorption	0.3 %
Humidity absorption	0.12 %
Density	1200 kg/m³
Luminous transmittance	89 %
Injection molding, melt temperature	300 °C
Injection molding, mold temperature	80 °C
Injection molding, injection velocity	200 mm/s

Indicative values. Always consult the manufacturer's official datasheet before specification.

No verified equivalents indexed yet.

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