Evonik Vestodur® 2000 Medium Viscosity PBT

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Evonik Vestodur® 2000 Medium Viscosity PBT
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), Unreinforced, Molded
Material Notes:	Description: Degussa AG’s High Performance Polymers Business Unit manufactures a range of polybutylene terephthalate compounds that are supplied under the registered trademark VESTODUR® . Material properties characterizing VESTODUR compounds are: high thermostability high stiffness low water absorption resulting in high dimensional stability high hardness good strength good sliding friction behavior, low abrasion good creep behavior good electrical properties good chemical resistance good weathering resistance good processability no tendency to form stress cracks Specific Notes for this Material: Low- to- high-viscosity base types for injection molding applications (e.g., headlight housings, parts in medical technology) and extrusion applications (fiber optic jacketing) Information provided by degussa. Evonik Industries is the successor company to Degussa.
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Physical Properties	Original Value	Comments

Density	1.31 g/cc	ISO 1183
Water Absorption at Saturation	0.45 %	ISO 62
Linear Mold Shrinkage	0.016 cm/cm	Pigmentation can change mold shrinkage.
Linear Mold Shrinkage, Transverse	0.016 cm/cm	Pigmentation can change mold shrinkage.
Melt Flow	18.34 g/10 min @Load 2.16 kg, Temperature 250 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Hardness, Shore D	77	ISO 868
Ball Indentation Hardness	150 MPa	H30; ISO 2039-1
Tensile Strength, Yield	55.0 MPa	50 mm/min; ISO 527-1/2
Elongation at Break	>= 50 %	50 mm/min; ISO 527-1/2
Elongation at Yield	7.0 %	50 mm/min; ISO 527-1/2
Tensile Modulus	2.60 GPa	ISO 527-1/2
Charpy Impact Unnotched	30.0 J/cm² @Temperature -30.0 °C	ISO 179/1eU
	NB @Temperature 23.0 °C	ISO 179/1eU
Charpy Impact, Notched	0.600 J/cm² @Temperature -30.0 °C	ISO 179/1eA
	0.700 J/cm² @Temperature 23.0 °C	ISO 179/1eA

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+15 ohm-cm	IEC 60093
Surface Resistance	1.00e+13 ohm	IEC 60093
Dielectric Constant	3.3 @Frequency 100 Hz	IEC 60250
	3.5 @Frequency 1e+6 Hz	IEC 60250
Dielectric Strength	27.0 kV/mm	K20/P50; IEC 60243-1
Dissipation Factor	0.0020 @Frequency 100 Hz	IEC 60250
	0.023 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	575 V	Test Solution A, 100 drops; IEC 60112
	600 V	Test Solution A, CTI; IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear	110 µm/m-°C @Temperature 23.0 - 55.0 °C	Longitudinal; ISO 11359
CTE, linear, Transverse to Flow	110 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359
Melting Point	221 - 226 °C	DSC
Deflection Temperature at 0.46 MPa (66 psi)	150 °C	ISO 75-1/2
Deflection Temperature at 1.8 MPa (264 psi)	55.0 °C	ISO 75-1/2
Vicat Softening Point	180 °C	50N; ISO 306
	220 °C	10N; ISO 306
Flammability, UL94	HB @Thickness 0.800 mm
	HB @Thickness 1.60 mm
Oxygen Index	23 %	ISO 4589
Glow Wire Test	850 °C @Thickness 2.00 mm	IEC 60695-2-1/0-3

Descriptive Properties
Electrolytic Corrosion	A1 Step	IEC 60426

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