Vyncolit 4421 XB Novolac Phenolic

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Vyncolit 4421 XB Novolac Phenolic
Categories:	Polymer; Thermoset; Filled/Reinforced Thermoset; Phenolic; Phenolic, Novolac, Mineral Filled
Material Notes:	Mineral and organic filled phenolic molding compound with good mechanical properties. USES: Fuse holders, brush holders, circuit breakers, automotive ignition and solenoid covers. Information provided by Vyncolit, a Sumitomo Bakelite Group
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Physical Properties	Metric	English	Comments

Bulk Density	0.650 g/cc	0.0235 lb/in³	Powder Density; ISO 60
Density	1.55 g/cc	0.0560 lb/in³	Relative Density; ISO 1183
Linear Mold Shrinkage	0.0060 cm/cm	0.0060 in/in	Injection Molding; ISO 2577

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	65.0 MPa	9430 psi	ISO 527
Elongation at Break	0.60 %	0.60 %	Tensile; ISO 527
Tensile Modulus	13.0 GPa	1890 ksi	ISO 527
Flexural Strength	130 MPa	18900 psi	At Rupture; ISO 178
Flexural Modulus	10.0 GPa	1450 ksi	ISO 178
Flexural Strain at Break	1.4 %	1.4 %	ISO 178
Compressive Strength	240 MPa	34800 psi	ISO 604
Charpy Impact Unnotched	0.800 J/cm²	3.81 ft-lb/in²	ISO 179
Charpy Impact, Notched	0.250 J/cm²	1.19 ft-lb/in²	ISO 179

Electrical Properties	Metric	English	Comments
Insulation Resistance	1.00e+9 - 1.00e+10 ohm	1.00e+9 - 1.00e+10 ohm	Dry; IEC 167
Dielectric Strength	25.0 kV/mm	635 kV/in	IEC 243
Comparative Tracking Index	175 V	175 V	IEC 112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	40.0 µm/m-°C @Temperature 20.0 °C	22.2 µin/in-°F @Temperature 68.0 °F	TMA
CTE, linear, Transverse to Flow	50.0 µm/m-°C @Temperature 20.0 °C	27.8 µin/in-°F @Temperature 68.0 °F	TMA
Deflection Temperature at 1.8 MPa (264 psi)	160 °C	320 °F	ISO 75 Af
Flammability, UL94	V-1 @Thickness 1.60 mm	V-1 @Thickness 0.0630 in
	V-0 @Thickness 4.00 mm	V-0 @Thickness 0.157 in
Shrinkage	0.15 %	0.15 %	Post Shrinkage; ISO 2577

Descriptive Properties
Color	Black
ISO type	PF 2 C3
Main Filler	Mineral & Organic
Molding Method	Compression, transfer, injection

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 view all the property values for this datasheet as they were originally entered into MatWeb.

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Overview of materials for Phenolic; Unreinforced; Molded

PVYNC038 / 72246

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