INEOS Styrolution NAS® 21 Styrene Methyl Methacrylate (SMMA)

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INEOS Styrolution NAS® 21 Styrene Methyl Methacrylate (SMMA)
Categories:	Polymer; Thermoplastic; Polystyrene (PS); Styrene/Methyl Methacrylate Copolymer (SMMA)
Material Notes:	NAS® 21 is a styrene acrylic copolymer that can be used in a variety of applications demanding a strong, stiff water-clear plastic resin with excellent thermal stability. Sparkling clarity, Low density, Ease of processing, Gamma & ETO sterilizable, Meets USP XXIII specifications for Class VI plastics, UL 94 HB approved Information provided by Styrolution.
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Physical Properties	Metric	English	Comments

Density	1.08 g/cc	0.0390 lb/in³	ISO 1183
Moisture Absorption at Equilibrium	0.10 % @Temperature 23.0 °C	0.10 % @Temperature 73.4 °F	50% RH; ISO 62
Linear Mold Shrinkage	0.0020 - 0.0060 cm/cm	0.0020 - 0.0060 in/in	ISO 294-4
Melt Flow	24 g/10 min @Load 10.0 kg, Temperature 220 °C	24 g/10 min @Load 22.0 lb, Temperature 428 °F	Volumetric; cm3/10 min; ISO 1133

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	70	70
Ball Indentation Hardness	168 MPa	24400 psi	ISO 2039-1
Tensile Strength, Yield	60.0 MPa	8700 psi	ISO 527
Elongation at Break	2.5 %	2.5 %	ISO 527
Tensile Modulus	3.30 GPa	479 ksi	ISO 527
Flexural Strength	100 MPa	14500 psi	ISO 178
Flexural Modulus	3.40 GPa	493 ksi	ISO 178
Izod Impact, Notched (ISO)	12.0 kJ/m²	5.71 ft-lb/in²	ISO 180
	2.50 kJ/m² @Temperature 23.0 °C	1.19 ft-lb/in² @Temperature 73.4 °F	ISO 180/A
Charpy Impact Unnotched	1.20 J/cm² @Temperature 23.0 °C	5.71 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eU
Charpy Impact, Notched	0.150 J/cm² @Temperature 23.0 °C	0.714 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eA

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	260 °C	500 °F
Deflection Temperature at 0.46 MPa (66 psi)	90.0 °C	194 °F	annealed 4 hours at 80°C; ISO 75
Deflection Temperature at 1.8 MPa (264 psi)	80.0 °C	176 °F	annealed 4 hours at 80°C; ISO 75
Vicat Softening Point	98.0 °C @Load 5.10 kg	208 °F @Load 11.2 lb	VST/B/50. 50C/h; ISO 306
	105 °C @Load 1.02 kg	221 °F @Load 2.25 lb	B/2 120C/H; ASTM D 1525

Optical Properties	Metric	English	Comments
Refractive Index	1.57	1.57	Sodium D Line; ISO 489
Haze	0.30 %	0.30 %	ASTM D 1003
Transmission, Visible	91.3 % @Wavelength 550 nm	91.3 % @Wavelength 550 nm	ASTM D1003

Processing Properties	Metric	English	Comments
Rear Barrel Temperature	180 - 210 °C	356 - 410 °F
Middle Barrel Temperature	200 - 230 °C	392 - 446 °F
Front Barrel Temperature	210 - 240 °C	410 - 464 °F
Melt Temperature	200 - 240 °C	392 - 464 °F	ISO 294
Mold Temperature	30.0 - 60.0 °C	86.0 - 140 °F	ISO 294
Drying Temperature	80.0 °C @Time 7200 sec	176 °F @Time 2.00 hour

Compliance Properties	Metric	English	Comments
USP Class VI	Yes	Yes

Descriptive Properties
Injection Velocity	Slow to Moderate		ISO 294

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PSTYR9860 / 216087

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