Asahi Kasei DELPET™ 70FR Acrylic (PMMA), Light Guiding Plate Grade

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Asahi Kasei DELPET™ 70FR Acrylic (PMMA), Light Guiding Plate Grade
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Optical Sheet
Material Notes:	DELPET™ has excellent transparency, surface hardness and weatherability. Main applications of DELPET™ are outer/inner parts for automobile, optical goods, industrial and general parts/goods. Information provided by Asahi Kasei Corp.
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Physical Properties	Metric	English	Comments

Density	1.19 g/cc	0.0430 lb/in³	1183
Water Absorption	0.30 % @Temperature 23.0 °C	0.30 % @Temperature 73.4 °F	ISO 62 Method 1
Linear Mold Shrinkage	0.0020 - 0.0060 cm/cm	0.0020 - 0.0060 in/in	AsahiKasei Method
Melt Flow	21 g/10 min @Load 3.80 kg, Temperature 230 °C	21 g/10 min @Load 8.38 lb, Temperature 446 °F	1133, cond 13
Spiral Flow	44.0 cm @Thickness 2.00 mm, Pressure 75.0 MPa	17.3 in @Thickness 0.0787 in, Pressure 10900 psi	cylinder temp 250°C, mold temp 60°C; AsahiKasei Method

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	95	95	2039-2
Tensile Strength at Break	54.0 MPa	7830 psi	527-2/1A/5
Elongation at Break	4.0 %	4.0 %	527-2/1A/5
Tensile Modulus	3.20 GPa	464 ksi	527-2/1A/1
Flexural Strength	86.0 MPa	12500 psi	178
Flexural Modulus	3.20 GPa	464 ksi	178
Charpy Impact Unnotched	1.70 J/cm²	8.09 ft-lb/in²	179/1eU
Charpy Impact, Notched	0.120 J/cm²	0.571 ft-lb/in²	179/1eA

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	94.0 °C	201 °F	Deflection Temperature, load not reported; ISO 75-1
Vicat Softening Point	102 °C	216 °F	306 B50

Optical Properties	Metric	English	Comments
Refractive Index	1.49	1.49	489
UV Transmittance	92 %	92 %	13468-1

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PASAHI8019 / 221046

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