Chi Mei Acrystex® PM-600 SMMA Resin

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Chi Mei Acrystex® PM-600 SMMA Resin
Categories:	Polymer; Thermoplastic; Polystyrene (PS); Styrene/Methyl Methacrylate Copolymer (SMMA)
Material Notes:	Transparency is close to that of Poly Methylmethacrylate (PMMA). General injection molding and extrusion molding for optical components, toys, lampshades, OA accessories, food containers, household appliances, building materials. ACRYSTEX® SMMA resin is a copolymer primarily composed of methyl methac-rylate (MMA) and styrene monomer (SM). Its advantages include excellent transparency and optical properties, good weather resistance, ease of processing, low water absorption, good dimensional stability, good chemical resistance, and low residual stress for molded products. The specific gravity of SMMA resin is lower than acrylic, producing more plastic with less input and so leading to lower costs for customers. Information provided by Chi Mei Corporation
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Physical Properties	Metric	English	Comments

Specific Gravity	0.910 g/cc	0.910 g/cc	ASTM D792
Density	1.12 g/cc	0.0405 lb/in³	ISO 1183
Linear Mold Shrinkage	0.0030 - 0.0070 cm/cm	0.0030 - 0.0070 in/in	ISO 294-4
Melt Flow	1.5 g/10 min @Load 5.00 kg, Temperature 220 °C	1.5 g/10 min @Load 11.0 lb, Temperature 428 °F	Melt Volume Rate (ml/10 min.); ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	67.0 MPa	9720 psi	50 mm/min; ISO 527
Elongation at Break	5.0 %	5.0 %	50 mm/min.; ISO 527
Flexural Strength	90.0 MPa	13100 psi	2 mm/min.; ISO 178
Flexural Modulus	2.50 GPa	363 ksi	2 mm/min.; ISO 178
Izod Impact, Notched (ISO)	2.70 kJ/m² @Temperature -30.0 °C	1.28 ft-lb/in² @Temperature -22.0 °F	180/1A
	3.00 kJ/m² @Temperature 23.0 °C	1.43 ft-lb/in² @Temperature 73.4 °F	180/1A
Charpy Impact, Notched	0.200 J/cm² @Temperature 23.0 °C	0.952 ft-lb/in² @Temperature 73.4 °F	ISO 179
	0.200 J/cm² @Temperature -30.0 °C	0.952 ft-lb/in² @Temperature -22.0 °F	ISO 179

Thermal Properties	Metric	English	Comments
CTE, linear	50.0 - 80.0 µm/m-°C	27.8 - 44.4 µin/in-°F	ISO 11359
Deflection Temperature at 1.8 MPa (264 psi)	82.0 °C	180 °F	annealed; ISO 75A
	97.0 °C	207 °F	annealed; ISO 75A
Vicat Softening Point	101 °C @Load 5.00 kg	214 °F @Load 11.0 lb	50°C/hr; ISO 306
	106 °C @Load 1.00 kg	223 °F @Load 2.20 lb	50°C/hr; ISO 306
Flammability, UL94	HB @Thickness 1.50 mm	HB @Thickness 0.0591 in

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PCHI9906 / 280801

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