Covestro

Makrolon 2407 703829 Gun Grey

Makrolon 2407 703829 Gun Grey is a general-purpose, low-viscosity Polycarbonate (PC) grade (Gun Grey, colour/batch 703829). UV stabilized with easy release for injection moulding.
Key properties: Density 1.20 g/cm³ | MVR 19 cm³/10 min @ 300°C/1.2 kg | Tensile Strength 66 MPa | Vicat 143°C.
GradeMakrolon 2407 703829 Gun Grey
MaterialPC
ColorGun Grey (703829)
MFI19 cm³/10 min (MVR @ 300°C/1.2 kg)
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Material Snapshot

Grade
Makrolon 2407 703829 Gun Grey
Material Type
PC
Manufacturer
Covestro
Brand
Makrolon
Color
Gun Grey (703829)
Density
1.20 g/cm³
MFI
19 cm³/10 min (MVR @ 300°C/1.2 kg)
Supply Form
Granules

Applications

  • Automotive interior and exterior components
  • Electrical & electronic housings and connectors
  • Consumer electronics housings
  • Appliance components
  • Machine guards and covers

Key Features

  • General-purpose, low viscosity (MVR 19 cm³/10 min)
  • UV stabilized for outdoor durability
  • Easy mould release
  • High impact strength (Charpy notched 65 kJ/m²)
  • Heat resistant (Vicat 143°C, HDT 124°C @ 1.8 MPa)
  • Injection moulding grade (melt 280–320°C)

Mechanical Properties

Impact Strength
Charpy Notched: 65 kJ/m² (23°C); 14 kJ/m² (-30°C)
Tensile Strength
66 MPa
Tensile Modulus
2400 MPa
Flexural Strength
98 MPa
Flexural Modulus
2350 MPa

Thermal & Processing

Heat Deflection Temperature
124°C at 1.80 MPa; 136°C at 0.45 MPa
Vicat Softening Temperature
143°C (50 N)
Melt Temperature Range
Melt: 280 - 320°C / Mold: 80 - 120°C
Drying Conditions
120°C / 2 - 3 hr
Processing Temp
Melt: 280 - 320°C / Mold: 80 - 120°C

Performance Properties

Electrical Properties
Dielectric Strength: 34 kV/mm
Volume Resistivity: 1E14 Ohm·m
Flammability Rating
V-2
Water Absorption
0.30% (saturation); 0.12% (equilibrium)
Mold Shrinkage
0.5 - 0.7%

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