Röhm PLEXIGLAS® GS Clear 2458 3 mm UV transmitting PMMA

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Röhm PLEXIGLAS® GS Clear 2458 3 mm UV transmitting PMMA (discontinued **)
Categories:	Polymer; Thermoplastic; Acrylic (PMMA)
Material Notes:	The Product and its Benefits: UV transmitting PLEXIGLAS GS is a kind of cast acrylic (= polymethyl methacrylate, PMMA) specially developed for tanning beds, with high UV (ultraviolet) transmission and UV resistance. UV transmitting PLEXIGLAS® GS has a perfectly coherent surface, whether in its smooth or satin-finished version. It always feels pleasantly warm to the skin and is hygienic. It is therefore ideally suited for use in both cosmetic and therapeutic UV appliances. The material is particularly resistant to extremes of climate, i. e. also ideal for applications exposed to heat and humidity in addition to UV radiation. UV transmitting PLEXIGLAS® GS exhibits high mechanical strength at low weight. Users can derive benefits from solid sheets made from three grades of UV transmitting PLEXIGLAS® GS: Clear 2458 with two smooth, transparent surfaces, Clear 2458 SC with one satin-finished surface and a translucent appearance, Clear 2890 with specially adjusted UV transmission for special applications. The former Evonik Methacrylates business has been sold to Röhm GmbH (Roehm).
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Physical Properties	Original Value	Comments

Density	1.19 g/cc	ISO 1183

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	>= 60.0 MPa	ISO 527
Elongation at Break	>= 5.0 %	ISO 527
Modulus of Elasticity	2.50 GPa	ISO 527
Flexural Strength	90.0 MPa	ISO 178

Thermal Properties	Original Value	Comments
CTE, linear	70.0 µin/in-°F @Temperature 0.000 - 50.0 °C	DIN 53752-A
Thermal Conductivity	0.190 W/m-K	DIN 52612
Vicat Softening Point	100 °C	B50; ISO 306
Flammability, UL94	HB

Optical Properties	Original Value	Comments
Transmission, Visible	>= 90 % @Wavelength 380 - 780 nm	DIN 5036, Part 3
UV Transmittance	70 %	8; DIN 5036, Part 3
	80 %	3; DIN 5036, Part 3

**
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