LEXAN™ Resin IR2840

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Description

Low flow polycarbonate resin with mold release. FDA food contact compliant. Available in limited transparent tints, limited package types, and must meet minimum order quantity requirements.

This material data has been provided by Matmatch.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValueComment

Density

23.0 °C

1.19 g/cm³

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ASTM D 792

Water absorption

23.0 °C

0.15 %

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ISO 62 | 23°C, 50% RH

Water absorption, equilibrium

23.0 °C

0.35 %

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ASTM D 570

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

2.31 GPa

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ASTM D 638 | 5 mm/min

Elongation

23.0 °C

135 %

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ASTM D 638 | Type I, 50 mm/min

Elongation at yield

23.0 °C

7 %

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ASTM D 638 | Type I, 50 mm/min

Flexural modulus

23.0 °C

2.3 GPa

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ISO 178 | 2 mm/min

Flexural yield strength

23.0 °C

90 MPa

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ISO 178 | 2 mm/min

Impact strength, Charpy notched

23.0 °C

95 kJ/m²

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ISO 179/1eA

Impact strength, Izod notched

-30.0 °C

10 kJ/m²

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ISO 180/1A

23.0 °C

65 kJ/m²

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ISO 180/1A

Impact strength, Izod notched, ASTM

-30.0 °C

139 J/m

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ASTM D 256

23.0 °C

850 J/m

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ASTM D 256

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Impact strength, Izod unnotched, ASTM

23.0 °C

3204 J/m

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ASTM D 4812

Tensile strength

23.0 °C

68 MPa

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ASTM D 638 | Type I, 50 mm/min

Yield strength

23.0 °C

63 MPa

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ASTM D 638 | Type I, 50 mm/min

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

6E-5 1/K

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ISO 11359-2 | -40°C to 40°C

Coefficient of thermal expansion, transverse

23.0 °C

6E-5 1/K

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ISO 11359-2 | -40°C to 40°C

Heat deflection temperature, 1.80 MPa

132 °C

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ASTM D 648 | 1.82 MPa, 6.4 mm, unannealed

Vicat softening temperature

154 °C

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ASTM D 1525 | Rate B/50

Optical

PropertyValueComment

Haze

1 %

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ASTM D 1003 | 2.54 mm

Refractive index

1.59 [-]

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ASTM D542

Transmission

88 %

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ASTM D 1003 | 2.54 mm

Rheological Properties

PropertyTemperatureValueComment

Melt mass-flow rate

7 g/10min

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ASTM D 1238 | 300°C/1.2 kg

Melt volume-flow rate

6 cm³/10min

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ISO 1133 | 300°C/1.2 kg

Shrinkage

23.0 °C

0.5 - 0.7 %

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SABIC method | 3.2 mm

Technological properties

Property
Application areas

Sunglasses

Processing methods

Drying Temperature: 120°C, Drying Time: 3-4hrs, Drying Time (Cumulative): 48hrs, Maximum Moisture Content: 0.02%, Melt Temperature: 310-330°C, Nozzle Temperature: 305-325°C, Front - Zone 3 Temperature: 310-330°C, Middle - Zone 2 Temperature: 300-320°C, Rear - Zone 1 Temperature: 290-310°C, Mold Temperature: 80-115°C, Back Pressure: 0.3-0.7MPa, Screw Speed: 40-70rpm, Shot to Cylinder Size: 40-60%, Vent Depth: 0.025-0.076mm