Versalis Edistir® N 3840 General Purpose Polystyrene

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Versalis Edistir® N 3840 General Purpose Polystyrene
Categories:	Polymer; Thermoplastic; Polystyrene (PS)
Material Notes:	General purpose polystyrene combining easy flow and medium heat resistance. N 3840 belongs to the third generation of Edistir® GPPS. Edistir® N 3840 is suggested in extrusion for glossy capping of HIPS sheets and for blending with HIPS or clear SBS for stiffer thermo formable sheets. This grade exhibits excellent process ability in injection molding and it is recommended for complex and thin-walled parts and fast molding cycles. Thanks to N 3840, injected items will be brighter and neutral colored in line with more sophisticated market needs. Applications: Thermoformed disposable packaging and glossy sheets for industrial and fridge applications. Injection molding of drinking cups, food and cosmetics containers, toys, house ware and medical articles (petri dishes). Information provided by Versalis.
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Physical Properties	Original Value	Comments

Bulk Density	0.650 g/cc	ISO 60
Density	1.05 g/cc	ISO 1183
Water Absorption	<= 0.10 % @Temperature 23.0 °C, Time 86400 sec	ISO 62
Linear Mold Shrinkage	0.0030 - 0.0060 cm/cm	ISO 294/4
Melt Flow	10 g/10 min @Load 5.00 kg, Temperature 200 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	80	ISO 2039/2
Tensile Strength at Break	39.0 MPa	5 mm/min; ISO 527
Elongation at Break	1.8 %	5 mm/min; ISO 527
Tensile Modulus	3250 MPa	1 mm/min; ISO 527
Flexural Strength	69.0 MPa	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	1.50 kJ/m² @Thickness 4.00 mm, Temperature -30.0 °C	ISO 180/1A
	1.70 kJ/m² @Thickness 4.00 mm, Temperature 23.0 °C	ISO 180/1A

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 7.00e+15 ohm-cm	IEC 60093
Surface Resistance	>= 1.50e+15 ohm	IEC 60093
Dielectric Constant	2.5 @Frequency 50 Hz	IEC 60250
Dielectric Strength	70.0 kV/mm	IEC 60243
Dissipation Factor	0.00020 @Frequency 50 Hz	IEC 60250
Comparative Tracking Index	375 V	Sol.A; IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear	70.0 µm/m-°C	ASTM D 696
Thermal Conductivity	0.170 W/m-K	ISO 8302
Deflection Temperature at 1.8 MPa (264 psi)	84.0 °C	120°C/h, annealed; ASTM D 648
Vicat Softening Point	88.0 °C @Load 5.10 kg	50°C/h; ISO 306/B
	92.0 °C @Load 1.02 kg	50°C/h; ISO 306/A
Flammability, UL94	HB @Thickness 1.50 mm
Glow Wire Test	650 °C @Thickness 1.60 mm	IEC 60695-2-1

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