Overview of materials for Acrylic, Optical Sheet

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Overview of materials for Acrylic, Optical Sheet
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Optical Sheet
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Acrylic, Optical Sheet". Each property range of values reported is minimum and maximum values of appropriate MatWeb entries. The comments report the average value, and number of data points used to calculate the average. The values are not necessarily typical of any specific grade, especially less common values and those that can be most affected by additives or processing methods.
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Physical Properties	Original Value	Comments

Density	1.15 - 1.19 g/cc	Average value: 1.18 g/cc Grade Count:23
Water Absorption	0.200 - 0.400 %	Average value: 0.300 % Grade Count:12
Thickness	8.00 - 12700 microns	Average value: 1410 microns Grade Count:9
Linear Mold Shrinkage	0.00200 - 0.00600 cm/cm	Average value: 0.00414 cm/cm Grade Count:7
Melt Flow	5.50 - 21.0 g/10 min	Average value: 12.3 g/10 min Grade Count:3
Spiral Flow	34.0 - 44.0 cm	Average value: 39.3 cm Grade Count:3

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	46.0 - 98.0	Average value: 85.9 Grade Count:14
Hardness, Rockwell R	106 - 110	Average value: 108 Grade Count:5
Tensile Strength, Ultimate	54.0 - 83.0 MPa	Average value: 69.1 MPa Grade Count:8
Tensile Strength, Yield	37.9 - 72.0 MPa	Average value: 55.7 MPa Grade Count:14
Elongation at Break	4.00 - 5.80 %	Average value: 4.91 % Grade Count:12
Elongation at Yield	3.90 - 6.60 %	Average value: 5.43 % Grade Count:3
Modulus of Elasticity	1.52 - 3.38 GPa	Average value: 2.62 GPa Grade Count:25
Flexural Yield Strength	57.0 - 120 MPa	Average value: 101 MPa Grade Count:20
Flexural Modulus	1.86 - 3.38 GPa	Average value: 2.83 GPa Grade Count:16
Compressive Yield Strength	117 - 124 MPa	Average value: 119 MPa Grade Count:3
Izod Impact, Notched	0.149 - 1.10 J/cm	Average value: 0.425 J/cm Grade Count:7
	0.200 - 0.500 J/cm @Temperature -18.0 - -18.0 °C	Average value: 0.275 J/cm Grade Count:4
Izod Impact, Unnotched	0.320 - 0.587 J/cm	Average value: 0.427 J/cm Grade Count:5
Izod Impact, Notched (ISO)	0.400 - 0.750 kJ/m²	Average value: 0.603 kJ/m² Grade Count:3
Charpy Impact Unnotched	1.37 - 5.00 J/cm²	Average value: 2.02 J/cm² Grade Count:8
Charpy Impact, Notched	0.120 - 0.130 J/cm²	Average value: 0.123 J/cm² Grade Count:3
Gardner Impact	0.226 - 5.30 J	Average value: 2.42 J Grade Count:7
Falling Dart Impact	8.13 - 13.6 J	Average value: 10.3 J Grade Count:5

Electrical Properties	Original Value	Comments
Shielding Effectiveness	40.0 - 120 dB	Average value: 73.8 dB Grade Count:3

Thermal Properties	Original Value	Comments
CTE, linear	52.2 - 162 µm/m-°C	Average value: 104 µm/m-°C Grade Count:28
Thermal Conductivity	0.0252 - 0.190 W/m-K	Average value: 0.0892 W/m-K Grade Count:10
Maximum Service Temperature, Air	60.0 - 100 °C	Average value: 75.6 °C Grade Count:22
Deflection Temperature at 0.46 MPa (66 psi)	96.0 - 101 °C	Average value: 98.1 °C Grade Count:3
Deflection Temperature at 1.8 MPa (264 psi)	71.0 - 99.0 °C	Average value: 88.9 °C Grade Count:20
Vicat Softening Point	99.0 - 116 °C	Average value: 106 °C Grade Count:13
Minimum Service Temperature, Air	-55.0 - -34.0 °C	Average value: -51.5 °C Grade Count:4
Flammability, UL94	HB	Grade Count:5
Flame Spread	15.2 - 25.9 mm/min	Average value: 20.5 mm/min Grade Count:3
Smoke Density	0.0200 - 20.0	Average value: 3.68 Grade Count:10
Ignition Temperature	399 - 488 °C	Average value: 446 °C Grade Count:11

Optical Properties	Original Value	Comments
Refractive Index	1.46 - 1.49	Average value: 1.49 Grade Count:14
Haze	1.00 - 3.00 %	Average value: 1.78 % Grade Count:7
Gloss	90.0 - 140 %	Average value: 104 % Grade Count:6
Transmission, Visible	28.0 - 92.0 %	Average value: 78.4 % Grade Count:24
UV Transmittance	92.0 %	Average value: 92.0 % Grade Count:3

Processing Properties	Original Value	Comments
Processing Temperature	143 - 160 °C	Average value: 156 °C Grade Count:4

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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