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Technical Data

Typical Properties

PLEXIGLAS^® GS 245
PLEXIGLAS^® GS 249
biaxially stretched PLEXIGLAS^® GS 249 is also excellently suited for stretching, which makes it possible to improve its properties even further over the unstretched state. It is not included in our sales range. Biaxial stretching is performed by fabricators

PLEXIGLAS^® GS 245
Property	Typical Value	Test method
Density	1,19 g/cm³	ISO 1183 (ASTM D 792)
Tensile strength	80 MPa 11600 psi	ISO 527-2/1B/5 ASTM D 638
Tensile elongation	5,5 %	ISO 527 2/1B/5 (ASTM D 638)
Shrinkage, approx.	1,5 %	160 °C, 16 min., Dicke 6,35 mm
Refractive index	1,49	ISO 489 (ASTM D 542)
Light transmittance: - initial - after accelerated weathering	91 % 89 %	EN 2155-5 (ASTM D 1003) ASTM D 1003
Haze: - initial - after accelerated weathering	0,5 % 1 %	EN 2155-9 (ASTM D 1003) EN 2155-9 (ASTM D 1003)
Ultraviolet transmittance(I = 290-330 nm)	≤1 %
Angular deviation	≤4 minutes	EN 2155-7 (ASTM D 637)
Thermal expansion	7 ^.10^-5 1/K 3,9 ^.10^-5 in./in./°F	EN 2155-12 ASTM D 696
Heat deflection temperature	105 °C 222 °C	ISO 75-2Ae ASTM D 648
Vicat softening temperature	115 °C	ISO 306-B 50
Flammability	36 mm/min 1,4 in./min	EN 3844-2 ASTM D 635

PLEXIGLAS^® GS 249
Property	Typical Value	Test Method
Density	1,19 g/cm³	ISO 1183 (ASTM D 792)
Tensile strength	80 MPa 11600 psi	ISO 527-2/1B/5 ASTM D 638
Tensile elongation	5 %	ISO 527 2/1B/5 (ASTM D 638)
Refractive index	1,49	ISO 489 (ASTM D 542)
Light transmittance: - initial - after accelerated weathering	91 % 89 %	EN 2155-5 (ASTM D 1003) ASTM D 1003
Haze: - initial - after accelerated weathering	1,5 % 2,2 %	EN 2155-9 (ASTM D 1003) EN 2155-9 (ASTM D 1003)
Ultraviolet transmittance (I = 290-330 nm)	≤1 %
Angular deviation	≤4 %	EN 2155-7 (ASTM D 637)
Thermal expansion	7 ^. 10^-5 3,9 ^. 10^-5	EN 2155-12 ASTM D 696
Heat deflection temperature	113 °C 236 °F	ISO 75-2Ae ASTM D 648
Vicat softening temperature	118 °C	ISO 306-B 50
Flammability	20 mm/min 0,6 in./min	EN 3844-2 ASTM D 635
Water absorption : - standard - long-term	0,2 % 2,1 %	MIL-P-8184 MIL-P-8184
Crazing resistance: dry: - isopropyl alcohol - lacquer thinner	2880 psi 2328 psi	MIL-P-8184 MIL-P-8184
Crazing resistance: wet: - isopropyl alcohol - lacquer thinner - isopropyl alcohol	2486 psi 1925 psi 16 MPa	MIL-P-8184 MIL-P-8184 EN 2155-19

PLEXIGLAS^® GS 249 biaxial stretched
Property	Typical Value	Test Method
Tensile strength	80 MPa 11600 psi	ISO 527-2/1B/5 ASTM D 638
Tensile elongation	80 MPa 11600 psi	ISO 527 2/1B/5 ASTM D 638
Resistance to crack propagation - at23 °C (73 °F) - at17,8 °C (0 °F) - after weathering	118 N/mm^3/2 (3400 lbs./in.^3/2) 56 N/mm^3/2 (1600 lbs./in. ^3/2) 3350 lbs./in. ^3/2	EN 2155-21 (MIL-P-25690) EN 2155-21 (MIL-P-25690) MIL-P-25690
Shear strength	4500 psi	MIL-P-25690
Thermal relaxation - at110 °C (230 °F) - at145 °C (293 °F)	5 % 42 %	EN 2155-22 (MIL-P-25690) EN 2155-22 (MIL-P-25690)
Crazing resistance: dry: - isopropyl alcohol - lacquer thinner	3700 psi 3350 psi	MIL-PP-25690 MIL-PP-25690
Crazing resistance: wet - isopropyl alcohol - lacquer thinner	3500 psi 2580 psi	MIL-PP-25690 MIL-PP-25690

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