Celanese Nilit Nilitop BT N Unfilled, Nucleated PBT

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Celanese Nilit Nilitop BT N Unfilled, Nucleated PBT
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), Unreinforced, Molded
Material Notes:	Description: Nilitop BT N is an unfilled, nucleated PBT that has excellent cycle times. Key characteristics: Good overall mechanical performance Low moisture absorption Excellent UV resistance Excellent surface finish Good thermal performance Information provided by NILIT.
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Physical Properties	Original Value	Comments

Density	1.31 g/cc	ASTM D792, ISO 1183
Water Absorption	0.20 %	23°C, 24h in H₂O; sim. ISO 62
Water Absorption at Saturation	0.50 %	sim. ISO 62
Linear Mold Shrinkage, Flow	0.018 cm/cm	Euronil
Linear Mold Shrinkage, Transverse	0.018 cm/cm	Euronil

Mechanical Properties	Original Value	Comments
Tensile Strength, Yield	55.0 MPa	ISO 527, ASTM D638
Elongation at Break	35 %	ISO 527, ASTM D638
Elongation at Yield	4.0 %	ISO 527, ASTM D638
Flexural Yield Strength	85.0 MPa	ISO 178, ASTM D790
	25.0 MPa @Temperature 90.0 °C	ISO 178, ASTM D790
Flexural Modulus	2.20 GPa	ISO 178, ASTM D790
	0.500 GPa @Temperature 90.0 °C	ISO 178, ASTM D790
Izod Impact, Notched (ISO)	3.00 kJ/m² @Temperature -30.0 °C	ISO 180/1A
	5.00 kJ/m² @Temperature 23.0 °C	ISO 180/1A
Charpy Impact Unnotched	>= 25.0 J/cm²	ISO 179
	>= 4.00 J/cm² @Temperature -30.0 °C	ISO 179
Charpy Impact, Notched	0.600 J/cm²	ISO 179
	0.400 J/cm² @Temperature -30.0 °C	ISO 179

Electrical Properties	Original Value	Comments
Dielectric Strength	19.0 kV/mm @Thickness 2.00 mm	ASTM D149
Comparative Tracking Index	350 V @Thickness 3.20 mm	Sol. B; IEC 112, UL 746A
	600 V @Thickness 3.20 mm	Sol. A; IEC 112, UL 746A

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	130 °C	20,000 hr; IEC 216
Deflection Temperature at 0.46 MPa (66 psi)	182 °C	ISO 75, ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)	65.0 °C	ISO 75, ASTM D648
Vicat Softening Point	191 °C	49 N; ISO 306, ASTM D1525
	205 °C	9.8 N; ISO 306, ASTM D1525
Flammability, UL94	HB @Thickness 0.800 mm
	HB @Thickness 3.20 mm
Oxygen Index	22 %	ASTM D2863
Glow Wire Flammability Index	850 °C @Thickness 3.20 mm	IEC 694-2-12
	850 °C @Thickness 0.800 mm	IEC 694-2-12

Descriptive Properties
Heat Resistance - Ball Test	OK	at 125°C, IEC 309
	OK	at 165°C, IEC 309

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PLBN59 / 50448

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