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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	65.0 MPa	ISO 527
Elongation at Break	0.60 %	Tensile; ISO 527
Tensile Modulus	13.0 GPa	ISO 527
Flexural Strength	130 MPa	At Rupture; ISO 178
Flexural Modulus	10.0 GPa	ISO 178
Flexural Strain at Break	1.4 %	ISO 178
Compressive Strength	240 MPa	ISO 604
Charpy Impact Unnotched	0.800 J/cm²	ISO 179
Charpy Impact, Notched	0.250 J/cm²	ISO 179

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

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	40.0 µm/m-°C @Temperature 20.0 °C	TMA
CTE, linear, Transverse to Flow	50.0 µm/m-°C @Temperature 20.0 °C	TMA
Deflection Temperature at 1.8 MPa (264 psi)	160 °C	ISO 75 Af
Flammability, UL94	V-1 @Thickness 1.60 mm
	V-0 @Thickness 4.00 mm
Shrinkage	0.15 %	Post Shrinkage; ISO 2577

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

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PVYNC038 / 72246

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