Asahi Kasei Delpet® 670N Acrylic Molding Compound

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Asahi Kasei Delpet® 670N Acrylic Molding Compound (discontinued **)
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, General Purpose, Molded
Material Notes:	670N is a solvent-resistant grade, virtually unaffected by painting, printing, and antistatic treatment. General Delpet® qualities include attractive transparency, elegant luster and color brightness, excellent weather resistance, surface hardness, excellent chemical resistance, superior electrical resistance and insulation properties, and superior machinability.
Key Words:	PMMA; Polymethylmethacrylate; Polymethyl Methacrylate
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Physical Properties	Metric	English	Comments

Density	1.19 g/cc	0.0430 lb/in³	ASTM D792
Water Absorption	0.30 %	0.30 %	details not reported; ASTM D792
Linear Mold Shrinkage	0.0020 - 0.0060 cm/cm	0.0020 - 0.0060 in/in	ASTM D955
Melt Flow	4.0 g/10 min	4.0 g/10 min	Condition L; ASTM D1238
	8.0 g/10 min	8.0 g/10 min	Condition I; ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	92	92	ASTM D785
Tensile Strength, Ultimate	71.0 MPa	10300 psi	ASTM D638
Elongation at Break	5.0 %	5.0 %	ASTM D638
Flexural Yield Strength	110 MPa	16000 psi	ASTM D790
Flexural Modulus	3.30 GPa	479 ksi	ASTM D790

Electrical Properties	Metric	English	Comments
Electrical Resistivity	>= 1.00e+15 ohm-cm	>= 1.00e+15 ohm-cm	ASTM D257
Surface Resistance	>= 1.00e+16 ohm	>= 1.00e+16 ohm	ASTM D257
Dielectric Constant	3.0 @Frequency 40.0 - 50.0 Hz	3.0 @Frequency 40.0 - 50.0 Hz	ASTM D150
	4.0 @Frequency 60 Hz	4.0 @Frequency 60 Hz	ASTM D150
Dielectric Strength	20.0 kV/mm	508 kV/in	Short-term; 4 kV/s; ASTM D149
Dissipation Factor	0.020 @Frequency 40.0 Hz	0.020 @Frequency 40.0 Hz	ASTM D150
	0.040 @Frequency 50 Hz	0.040 @Frequency 50 Hz	ASTM D150
	0.060 @Frequency 60 Hz	0.060 @Frequency 60 Hz	ASTM D150

Thermal Properties	Metric	English	Comments
CTE, linear	60.0 µm/m-°C @Temperature 20.0 °C	33.3 µin/in-°F @Temperature 68.0 °F	ASTM D257
Specific Heat Capacity	1.46 J/g-°C	0.349 BTU/lb-°F
Thermal Conductivity	0.210 W/m-K	1.46 BTU-in/hr-ft²-°F	ASTM C177
Maximum Service Temperature, Air	84.0 °C	183 °F	Heat Distortion Temp
	84.0 °C	183 °F	Deflection Temp; Load not reported; ASTM D648

Optical Properties	Metric	English	Comments
Refractive Index	1.49	1.49
Transmission, Visible	93 %	93 %	ASTM D1003

**
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PLAA77 / 49810

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