Röhm ACRYLITE® H12 Acrylic Polymer

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Röhm ACRYLITE® H12 Acrylic Polymer
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Extruded; Acrylic, General Purpose, Molded
Material Notes:	ACRYLITE® H12 acrylic polymer is an amorphous thermoplastic molding and extrusion compound based on polymethyl methacrylate (PMMA). Typical properties of ACRYLITE® acrylic polymers are excellent weather resistance, high light transmission, high mechanical strength, high surface hardness and mar resistance, good melt flow rate, and versatile colorability due to crystal clarity. The special properties of ACRYLITE H12 polymer are medium heat resistance, medium melt flow rate, UV light transmitting, low levels of lubricant. Application: Used for injection molding and extrusion of optical and technical parts. Information Provided by Evonik CYRO. The former Evonik Methacrylates business has been sold to Röhm (Roehm) GmbH.
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Physical Properties	Original Value	Comments

Specific Gravity	1.19 g/cc	ASTM D792
Bulk Density	0.660 g/cc	ASTM D1895
Water Absorption at Saturation	0.30 %	ASTM D570
Linear Mold Shrinkage	0.0040 - 0.0060 in/in	ASTM D955
Melt Flow	7.0 g/10 min @Load 3.80 kg, Temperature 230 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	94	ASTM D785
Tensile Strength at Break	9500 psi	ASTM D638
Elongation at Break	4.0 - 6.0 %	ASTM D638
Elongation at Yield	4.0 - 6.0 %	ASTM D638
Tensile Modulus	470000 psi	ASTM D638
Flexural Strength	17000 psi	ASTM D790
Flexural Modulus	490000 psi	ASTM D790
Izod Impact, Notched	0.360 ft-lb/in @Temperature 23.0 °C	1/4" bar; ASTM D256

Thermal Properties	Original Value	Comments
CTE, linear	40.0 µin/in-°F @Temperature 0.000 - 156 °C	ASTM D696
Deflection Temperature at 1.8 MPa (264 psi)	201 °F @Thickness 6.35 mm	Annealed; ASTM D648
Vicat Softening Point	221 °F	ASTM D1525

Optical Properties	Original Value	Comments
Haze	<= 1.0 %	ASTM D1003
Yellow Index	<= 1.0 %	ASTM D1925
Transmission, Visible	92 %	ASTM D1003

Processing Properties	Original Value	Comments
Middle Barrel Temperature	430 - 480 °F
Melt Temperature	430 - 480 °F
Mold Temperature	90.0 - 175 °F
Drying Temperature	170 °F
Dry Time	3 - 4 hour

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PCYR00051 / 101040

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