Overview of materials for Cellulose Acetate, Molded

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Overview of materials for Cellulose Acetate, Molded
Categories:	Polymer; Renewable/Recycled Polymer; Thermoplastic; Cellulosic; Cellulose Acetate, Molded
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Cellulose Acetate, Molded". 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	1.26 - 1.31 g/cc	Average value: 1.27 g/cc Grade Count:31
Water Absorption	1.90 - 7.00 %	Average value: 2.42 % Grade Count:22
Linear Mold Shrinkage	0.00200 - 0.00850 cm/cm	Average value: 0.00411 cm/cm Grade Count:20

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	31.0 - 117	Average value: 78.2 Grade Count:15
Tensile Strength, Ultimate	12.0 - 110 MPa	Average value: 38.3 MPa Grade Count:25
Tensile Strength, Yield	19.0 - 55.0 MPa	Average value: 33.0 MPa Grade Count:31
Elongation at Break	15.0 - 72.0 %	Average value: 31.0 % Grade Count:27
Elongation at Yield	3.10 - 4.00 %	Average value: 3.36 % Grade Count:8
Modulus of Elasticity	1.00 - 4.00 GPa	Average value: 2.08 GPa Grade Count:10
Flexural Yield Strength	27.0 - 72.0 MPa	Average value: 48.5 MPa Grade Count:23
Flexural Modulus	0.0800 - 2.62 GPa	Average value: 1.21 GPa Grade Count:23
Izod Impact, Notched	0.480 - 4.50 J/cm	Average value: 2.06 J/cm Grade Count:23
	0.370 - 0.690 J/cm @Temperature -40.0 - -40.0 °C	Average value: 0.561 J/cm Grade Count:15
Charpy Impact Unnotched	16.5 J/cm² - NB	Average value: 16.5 J/cm² Grade Count:9
	NB - NB @Temperature -30.0 - -30.0 °C	Grade Count:7
Charpy Impact, Notched	0.700 - 1.83 J/cm²	Average value: 1.39 J/cm² Grade Count:9
	0.470 - 1.03 J/cm² @Temperature -30.0 - -30.0 °C	Average value: 0.613 J/cm² Grade Count:7

Electrical Properties	Original Value	Comments
Electrical Resistivity	1.00e+13 - 1.00e+15 ohm-cm	Average value: 5.05e+14 ohm-cm Grade Count:5
Dielectric Constant	3.30 - 5.00	Average value: 3.79 Grade Count:6
Dielectric Strength	11.0 - 18.7 kV/mm	Average value: 14.5 kV/mm Grade Count:6
Dissipation Factor	0.00380 - 0.150	Average value: 0.0663 Grade Count:6

Thermal Properties	Original Value	Comments
CTE, linear	11.0 - 180 µm/m-°C	Average value: 81.0 µm/m-°C Grade Count:13
CTE, linear, Transverse to Flow	129 - 151 µm/m-°C	Average value: 141 µm/m-°C Grade Count:7
Specific Heat Capacity	1.20 - 1.90 J/g-°C	Average value: 1.48 J/g-°C Grade Count:6
Thermal Conductivity	0.160 - 0.360 W/m-K	Average value: 0.252 W/m-K Grade Count:6
Melting Point	138 - 180 °C	Average value: 160 °C Grade Count:11
Deflection Temperature at 0.46 MPa (66 psi)	52.0 - 105 °C	Average value: 81.5 °C Grade Count:15
Deflection Temperature at 1.8 MPa (264 psi)	48.0 - 86.0 °C	Average value: 69.4 °C Grade Count:21
Vicat Softening Point	78.0 - 113 °C	Average value: 96.8 °C Grade Count:20
Glass Transition Temp, Tg	95.0 - 108 °C	Average value: 102 °C Grade Count:7

Optical Properties	Original Value	Comments
Refractive Index	1.46 - 1.49	Average value: 1.48 Grade Count:6
Haze	1.40 - 8.50 %	Average value: 7.32 % Grade Count:6
Transmission, Visible	86.0 - 90.0 %	Average value: 89.3 % Grade Count:6

Processing Properties	Original Value	Comments
Processing Temperature	175 - 225 °C	Average value: 197 °C Grade Count:6
Melt Temperature	202 - 250 °C	Average value: 226 °C Grade Count:14
Mold Temperature	38.0 - 71.0 °C	Average value: 54.4 °C Grade Count:7

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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