Röhm ACRYLITE® hw55 Acrylic Polymer

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Röhm ACRYLITE® hw55 Acrylic Polymer (discontinued **)
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Heat Resistant, Molded; Acrylonitrile-Methyl Acrylate Copolymer
Material Notes:	ACRYLITE® hw55 acrylic polymer is a copolymer based on methyl methacrylate (MMA) with comonomer constituents for injection molding applications. 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® hw55 polymer are high heat resistance, high melt strength, improved resistance to isopropyl alcohol, and AMECA listed. Application: Used for injection molding of technical parts for applications subjected to high thermal stress. Information Provided by Evonik CYRO. The former Evonik Methacrylates business has been sold to Röhm (Roehm) GmbH.
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Physical Properties	Metric	English	Comments

Density	1.19 g/cc	0.0430 lb/in³	ISO 1183
Melt Flow	1.428 g/10 min @Load 3.80 kg, Temperature 230 °C	1.428 g/10 min @Load 8.38 lb, Temperature 446 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	80.0 MPa	11600 psi	5 mm/min; ISO 527
Elongation at Break	3.5 %	3.5 %	5 mm/min; ISO 527
Tensile Modulus	3.60 GPa	522 ksi	1 mm/min; ISO 527
Charpy Impact Unnotched	2.00 J/cm²	9.52 ft-lb/in²	ISO 179/1eU

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	106 °C	223 °F	ISO 75
Vicat Softening Point	119 °C	246 °F	B/50; ISO 306

Optical Properties	Metric	English	Comments
Refractive Index	1.51	1.51	ISO 489
Transmission, Visible	91 %	91 %	D65/10°; ISO 13468-2

Processing Properties	Metric	English	Comments
Melt Temperature	220 - 250 °C	428 - 482 °F
Mold Temperature	60.0 - 90.0 °C	140 - 194 °F
Drying Temperature	<= 109 °C	<= 228 °F
Dry Time	3 - 4 hour	3 - 4 hour

**
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PCYR00054 / 101043

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