I. Stern N1841 General Purpose Crystal Polystyrene

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I. Stern N1841 General Purpose Crystal Polystyrene (discontinued **)
Categories:	Polymer; Thermoplastic; Polystyrene (PS); Polystyrene, Transparent Grade
Material Notes:	Features: Excellent Process Properties Easy Flow Applications Displays Toys, Cosmetics Agency Ratings FDA Title 21 CFR 177.1640 UL File E220962 Information provided by I. Stern & Co. Inc. I. Stern & Co. Inc. has been acquired by Ravago.
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Physical Properties	Metric	English	Comments

Melt Flow	10 g/10 min	10 g/10 min	ASTM D1238

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	39.00 MPa	5656 psi	ASTM D638
Elongation at Break	1.8 %	1.8 %	ASTM D638
Flexural Strength	89.6 MPa	13000 psi	ASTM D790
Flexural Modulus	3.14 GPa	455 ksi	ASTM D790
Izod Impact, Notched	0.214 J/cm	0.400 ft-lb/in	ASTM D256

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	75.0 °C	167 °F	ASTM D648
Vicat Softening Point	86.1 °C	187 °F	ASTM D1525
Flammability, UL94	HB @Thickness 1.50 mm	HB @Thickness 0.0591 in
	HB @Thickness 3.00 mm	HB @Thickness 0.118 in

Compliance Properties	Metric	English	Comments
FDA	Yes	Yes	See notes for details.

**
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