Röhm ACRYLITE® Optical HT Acrylic polymer

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Röhm ACRYLITE® Optical HT Acrylic polymer
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Extruded
Material Notes:	ACRYLITE® Optical HT is an amorphous thermoplastic molding compound (PMMA). Typical properties of ACRYLITE® molding compounds are: good flow high mechanical strength, high surface hardness and abrasion resistance high light transmittance excellent weather resistance Special properties of ACRYLITE® Optical HT are: increased heat deflection temperature under load and increased Vicat softening temperature excellent optical clarity UL registration RTI 105°C by UL (fi) 746C UL registration Outdoor Suitability by UL (f1) 746C Application: ACRYLITE® Optical HT is particularly suitable for injection molding and extrusion of technical items. Information provided by Roehm America LLC
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Physical Properties	Metric	English	Comments

Specific Gravity	1.19 g/cc	1.19 g/cc	ASTM D792
Melt Flow	2.2 g/10 min @Load 3.80 kg, Temperature 230 °C	2.2 g/10 min @Load 8.38 lb, Temperature 446 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	98	98	ASTM D785
Tensile Strength	93.1 MPa	13500 psi	ASTM D638
Elongation at Break	2.0 - 4.0 %	2.0 - 4.0 %	ASTM D638
Elongation at Yield	2.0 - 4.0 %	2.0 - 4.0 %	ASTM D638
Tensile Modulus	0.605 GPa	87.7 ksi	ASTM D638
Flexural Strength	110 MPa	16000 psi	ASTM D790
Flexural Modulus	0.430 GPa	62.4 ksi	ASTM D790
Izod Impact, Notched	0.160 J/cm @Thickness 6.35 mm	0.300 ft-lb/in @Thickness 0.250 in	ASTM D256

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	114 °C @Thickness 6.35 mm	237 °F @Thickness 0.250 in	Annealed; ASTM D648
Vicat Softening Point	118 °C @Load 5.10 kg	244 °F @Load 11.2 lb	50°C/h; ASTM D1525
Flammability, UL94	HB @Thickness 1.50 mm	HB @Thickness 0.0591 in	IEC 707

Optical Properties	Metric	English	Comments
Haze	<= 0.50 %	<= 0.50 %	ASTM D1003
Yellow Index	<= 1.0 %	<= 1.0 %	ASTM E313
Transmission, Visible	>= 92 %	>= 92 %	ASTM D1003

Processing Properties	Metric	English	Comments
Melt Temperature	230 - 250 °C	446 - 482 °F
Mold Temperature	75.0 - 95.0 °C	167 - 203 °F	Injection Molding
Drying Temperature	90.0 - 100 °C	194 - 212 °F	Predrying
Dry Time	4.00 - 6.00 hour	4.00 - 6.00 hour	Predrying, Desiccant-Type Drier

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PROHM9335 / 319952

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