LEXAN™ Copolymer 4251R - Americas

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Description

High heat polycarbonate copolymer blend with an excellent balance of heat resistance, processability, and impact strength. Available in a range of opaque colors.

This material data has been provided by Sabic.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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

1.1 g/cm³

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ISO 1183

Moisture absorption

23.0 °C

0.09 %

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ISO 62 | (23°C / 50% RH)

Relative density

23.0 °C

1.2 [-]

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ASTM D 792

Water absorption

23.0 °C

0.24 %

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ISO 62-1 | (23°C/saturated)

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

2.2 GPa

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ISO 527 | 1 mm/min

Elongation

23.0 °C

96.1 %

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ISO 527 | break, 50 mm/min

Flexural modulus

23.0 °C

2 GPa

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ISO 178 | 2 mm/min

Flexural strength

23.0 °C

101 MPa

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ASTM D 790 | yld, 1.3 mm/min, 50 mm span

Impact strength, Charpy notched

23.0 °C

48 kJ/m²

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ISO 179/1eA | V-notch Edgew 80*10*4 sp=62mm, 23°C

Impact strength, Izod notched

23.0 °C

43 kJ/m²

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ISO 180/1A | 80*10*4, 23°C

Impact strength, Izod notched, ASTM

23.0 °C

639 J/m

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ASTM D 256 | notched, 23°C

Instrumented Impact, Total Energy

23.0 °C

75 J

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ASTM D 3763 | 23°C

Tensile strength

23.0 °C

62 MPa

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ISO 527 | yield, 50 mm/min

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

6.16E-5 1/K

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ISO 11359-2 | -40°C to 40°C

Coefficient of thermal expansion, transverse

23.0 °C

6.73E-5 1/K

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ISO 11359-2 | -40°C to 40°C

Heat deflection temperature

134 °C

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Heat deflection temperature, 1.80 MPa

134 °C

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ISO 75/Af | Flatw 80*10*4 sp=64mm

Vicat softening temperature

157 °C

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ISO 306 | Rate B/120

Rheological Properties

PropertyTemperatureValueComment

Melt mass-flow rate

5.6 g/10min

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ASTM D 1238 | 300°C/1.2 kgf

Melt volume-flow rate

31 cm³/10min

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ISO 1133 | MVR at 330°C/2.16kg

Shrinkage

23.0 °C

0.6 %

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SABIC method | 3.2 mm

Technological properties

Property
Application areas

Head Protection

Availability

Americas

Processing methods

Back Pressure: 0.3 to 0.7MPa
Middle - Zone 2 Temperature: 300 to 320.0°C
Melt Temperature: 310 to 330.0°C
Shot to Cylinder Size: 40 to 60.0%
Drying Time: 3 to 4.0hrs
Front - Zone 3 Temperature: 310 to 330.0°C
Nozzle Temperature: 305 to 325.0°C
Drying Time (Cumulative): 48hrs
Screw Speed: 40 to 70.0rpm
Maximum Moisture Content: 0.02%
Vent Depth: 0.025 to 0.076mm
Mold Temperature: 80 to 115.0°C
Drying Temperature: 120°C
Rear - Zone 1 Temperature: 290 to 310.0°C

Supplier Disclaimer

While the information is provided in good faith, SABIC MAKES NO WARRANTY, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY AND NONINFRINGEMENT OF INTELLECTUAL PROPERTY, NOR ASSUMES ANY LIABILITY, DIRECT OR INDIRECT, WITH RESPECT TO THE PERFORMANCE, SUITABILITY OR FITNESS FOR INTENDED USE OR PURPOSE OF THESE PRODUCTS IN ANY APPLICATION. Each Buyer must determine the suitability of SABIC's materials for the Buyer's particular use through appropriate testing and analysis. No statement by SABIC concerning a possible use of any product, service or design is intended, or should be construed, to grant any license under any patent or other intellectual property right.