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Description: PLEXIGLAS® GS 249 is another cast acrylic specially developed to meet even higher demands by the aviation industry, but is additionally crosslinked.
Details
Product Type
Applications
Producer
Supplier
Advantages
- uncrosslinked acrylic
- higher resistance to media that cause stress cracking
- increased heat distortion resistance
- excellently suited for stretching
Other Applications
cabin windows in civilian aircraft
glazing for pressurized aircraft cabins
cockpit glazing
canopies and windshields
Technical data
| Quantity | Value | Unit | Comment |
|---|---|---|---|
| Appearance Properties | |||
| Refractive index | 1.49 | ISO 489, ASTM D542 | |
| Physical Properties | |||
| Density | 1.19 | g/ml | ISO 1183, ASTM D792 |
| Thermal Properties | |||
| Vicat softening temperature | 118 | ºC | ISO 306-B-50 |
| Thermal Expansion | 70.0 | µm/m-°C | EN 2155-12, ASTM D696@Temperature 20.0 °C;Linear |
| Maximum Service Temperature | 113 | ºC | ISO 71-2Ae, ASTM D648 |
| Flame Spread | 15.2 | mm/min | Fire Rating; ASTM D635 |
| Flame Spread | 20.0 | mm/min | Fire Rating; EN 3844-2 |
| Mechanical Properties | |||
| Tensile Stress at break-MD | 80.0 | MPa | ISO 527-2/1B/5, ASTM D638 |
| Elongation at break-MD | 5.0 | % | ISO 527-2/1B/5, ASTM D638 |
| Chemical Properties | |||
| Water absorption | 0.20 | % | MIL-P-8184 |
| Water absorption | 2.1 | % | MIL-P-8184; at Saturation |
| Optical Properties | |||
| Haze | 1.5 | % | Original State; EN 2155-5, ASTM D1003 |
| Haze | 2.2 | % | after artificial weathering; EN 2155-9, ASTM D1003 |
| Transmittance | 89 | % | Visible ; after artificial weathering; ASTM D1003 |
| Transmittance | 91 | % | Original State; EN 2155;Visible-9, ASTM D1003 |
| Transmittance | <1.0 | % | UV @Wavelength 290 - 330 nm |
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