Röhm Acrylite® GMS Acrylic Sheet, Aerospace Grade

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Röhm Acrylite® GMS Acrylic Sheet, Aerospace Grade (discontinued **)
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Cast
Material Notes:	Data provided by CYRO Industries Is certified to meet or exceed Mil Spec MIL-P-5425, "Plastic, Acrylic Sheet, Heat Resistant." Used in aerospace transparent enclosures in monolithic or laminated form and in wing tip lenses, dust covers, or other optical uses. 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	typical of Acrylite® sheet
Water Absorption	0.20 %	0.20 %	24 hrs, 23°C; ASTM D570

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	83.0 MPa	12000 psi	ASTM D638
Elongation at Break	5.5 %	5.5 %	ASTM D638

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	1.47 J/g-°C	0.351 BTU/lb-°F	typical of Acrylite® sheet
Thermal Conductivity	0.190 W/m-K	1.32 BTU-in/hr-ft²-°F	typical of Acrylite® sheet
Deflection Temperature at 1.8 MPa (264 psi)	108 °C	226 °F	ASTM D648
Vicat Softening Point	105 °C	221 °F	ASTM D1525

Optical Properties	Metric	English	Comments
Haze	0.60 %	0.60 %
Transmission, Visible	92 %	92 %	ASTM D1003

**
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