Overview of materials for Vinyl Ester Sheet Molding Compound

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Overview of materials for Vinyl Ester Sheet Molding Compound
Categories:	Polymer; Thermoset; Vinyl Ester; Vinyl Ester Sheet Molding Compound
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Vinyl Ester Sheet Molding Compound". 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	1.03 - 1.95 g/cc	Average value: 1.67 g/cc Grade Count:40
Filler Content	30.0 - 60.0 %	Average value: 48.8 % Grade Count:8
Water Absorption	0.0500 - 0.600 %	Average value: 0.257 % Grade Count:23
Linear Mold Shrinkage	0.000 - 0.00120 cm/cm	Average value: 0.000645 cm/cm Grade Count:20

Mechanical Properties	Original Value	Comments
Hardness, Barcol	35.0 - 70.0	Average value: 53.8 Grade Count:15
Tensile Strength, Ultimate	30.3 - 993 MPa	Average value: 186 MPa Grade Count:39
	58.6054 - 58.6054 MPa @Temperature 150 - 150 °C	Average value: 58.6 MPa Grade Count:1
Elongation at Break	1.20 - 7.90 %	Average value: 3.47 % Grade Count:3
Modulus of Elasticity	3.72 - 94.5 GPa	Average value: 21.8 GPa Grade Count:24
	8.27371 - 8.27371 GPa @Temperature 150 - 150 °C	Average value: 8.27 GPa Grade Count:1
Flexural Yield Strength	40.0 - 1310 MPa	Average value: 298 MPa Grade Count:40
	50.0 - 365 MPa @Temperature 115 - 150 °C	Average value: 179 MPa Grade Count:3
Flexural Modulus	3.45 - 77.9 GPa	Average value: 18.1 GPa Grade Count:34
	16.2 - 16.2 GPa @Temperature 115 - 115 °C	Average value: 9.03 GPa Grade Count:1
	6.20528 - 8.27371 GPa @Temperature 150 - 150 °C	Average value: 9.03 GPa Grade Count:1
	6.20528 - 8.27371 GPa @Thickness 0.500 - 2.50 mm	Average value: 9.03 GPa Grade Count:1
Compressive Yield Strength	103 - 310 MPa	Average value: 202 MPa Grade Count:17
Compressive Modulus	0.0172 - 33.8 GPa	Average value: 12.2 GPa Grade Count:7
Ultimate Bearing Strength	221 MPa	Average value: 221 MPa Grade Count:3
Poissons Ratio	0.305 - 0.330	Average value: 0.324 Grade Count:4
Shear Modulus	3.10 - 5.19 GPa	Average value: 4.40 GPa Grade Count:3
Shear Strength	31.0 - 96.5 MPa	Average value: 49.4 MPa Grade Count:5
Izod Impact, Notched	2.14 - 37.0 J/cm	Average value: 10.9 J/cm Grade Count:23
Izod Impact, Unnotched	0.160 - 19.2 J/cm	Average value: 12.3 J/cm Grade Count:4
Tensile Impact Strength	12.0 - 62.0 kJ/m²	Average value: 40.6 kJ/m² Grade Count:8

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0100 - 5.00e+14 ohm-cm	Average value: 2.00e+14 ohm-cm Grade Count:4
Dielectric Constant	4.70 - 5.00	Average value: 4.80 Grade Count:3
Dielectric Strength	1.38 - 20.0 kV/mm	Average value: 10.2 kV/mm Grade Count:14
Arc Resistance	120 - 191 sec	Average value: 147 sec Grade Count:12

Thermal Properties	Original Value	Comments
CTE, linear	8.00 - 36.0 µm/m-°C	Average value: 20.8 µm/m-°C Grade Count:12
CTE, linear, Transverse to Flow	18.0 - 27.0 µm/m-°C	Average value: 23.0 µm/m-°C Grade Count:4
Specific Heat Capacity	0.841 - 1.51 J/g-°C	Average value: 1.28 J/g-°C Grade Count:3
Thermal Conductivity	0.300 - 46.2 W/m-K	Average value: 11.1 W/m-K Grade Count:5
	18.5 - 43.7 W/m-K @Temperature 85.0 - 85.0 °C	Average value: 31.1 W/m-K Grade Count:1
Maximum Service Temperature, Air	98.0 - 300 °C	Average value: 227 °C Grade Count:6
Deflection Temperature at 1.8 MPa (264 psi)	160 - 271 °C	Average value: 217 °C Grade Count:15
Glass Transition Temp, Tg	118 - 200 °C	Average value: 165 °C Grade Count:15
Flammability, UL94	HB - V-0	Grade Count:10
Flame Spread Index	25.0	Average value: 25.0 Grade Count:4
Smoke Density	600 - 700	Average value: 650 Grade Count:3

Processing Properties	Original Value	Comments
Processing Temperature	93.0 - 160 °C	Average value: 139 °C Grade Count:11
Cure Time	0.583333 - 10.0 min @Temperature 125 - 140 °C	Average value: 1.83 min Grade Count:9
	3.00 - 5.00 min @Temperature 138 - 138 °C	Average value: 1.83 min Grade Count:1
	3.00 - 5.00 min @Thickness 6.35 - 6.35 mm	Average value: 1.83 min Grade Count:1

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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