BASF Ultradur® B 6550 PBT

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BASF Ultradur® B 6550 PBT
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), Unreinforced, Molded
Material Notes:	Ultradur B 6550 is a high viscosity PBT extrusion grade. Applications; Used for loose buffer tubes for optical fibers, semi-finished products fro machining, profiles and pipes.
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Physical Properties	Original Value	Comments

Density	1.30 g/cc	ISO 1183
Water Absorption	0.50 %	DIN 53495/1L
Moisture Absorption at Equilibrium	0.25 %	23°C/50% R.H.
Viscosity Number	160 cm³/g
Linear Mold Shrinkage, Flow	0.015 cm/cm	Sheet
	0.017 cm/cm	60x60x2mm; ISO 294
Linear Mold Shrinkage, Transverse	0.015 cm/cm	Sheet
	0.021 cm/cm	60x60x2mm; ISO 294
Melt Flow	11.7 g/10 min @Load 2.16 kg, Temperature 250 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Ball Indentation Hardness	130 MPa	ISO 2039-1
Tensile Strength, Yield	54.0 MPa	50mm/min; ISO 527-2
Elongation at Break	>= 100 %	50mm/min; ISO 527-2
Elongation at Yield	3.5 %	50mm/min; ISO 527-2
Modulus of Elasticity	2.40 GPa	ISO 527-2
Flexural Strength	85.0 MPa	ISO 178
Charpy Impact Unnotched	NB	ISO 179/1eU
Charpy Impact, Notched	0.600 J/cm²	ISO 179/1eA
Dart Drop, Total Energy	>= 140 J	ISO 6603-1
Tensile Creep Modulus, 1000 hours	1100 MPa	elongation <0.5%, 23°C; ISO 899

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+16 ohm-cm	IEC 60093
Surface Resistance	1.00e+13 ohm	IEC 60093
Dielectric Constant	3.3 @Frequency 100 Hz	IEC 60250
	3.3 @Frequency 1e+6 Hz	IEC 60250
Dielectric Strength	140 kV/mm	IEC 243/1
Dissipation Factor	0.0010 @Frequency 100 Hz	IEC 60250
	0.020 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	600 V	IEC 60112

Thermal Properties	Original Value	Comments
Specific Heat Capacity	1.50 J/g-°C	IEC 1006
Thermal Conductivity	0.270 W/m-K	DIN 52612
Melting Point	220 - 225 °C	10 K/min
Maximum Service Temperature, Air	120 °C	at 50% loss of tensile strength after 20000h; IEC 216-1
	140 °C
	200 °C
Deflection Temperature at 0.46 MPa (66 psi)	135 °C	ISO 75-2
Deflection Temperature at 1.8 MPa (264 psi)	55.0 °C	ISO 75-2
Flammability, UL94	HB @Thickness 0.800 mm
	HB @Thickness 1.60 mm

Processing Properties	Original Value	Comments
Melt Temperature	250 - 270 °C	Pipe Extrusion
	260 °C	for shrinkage test
	250 - 275 °C	Injection molding
Mold Temperature	40.0 - 80.0 °C
	60.0 °C	for shrinkage test

Compliance Properties	Original Value	Comments
FDA	Yes	21 CFR 177.1660

Descriptive Properties
Color	Natural
Commercial Status	North America and Europe
Form	Pellets
Impact Modified	No
Primary Processing Technique	Extrusion
Processing	Film Extrusion
	Injection Molding
	Other Extrusion
	Profile Extrusion
	Sheet Extrusion
Special characteristic	Heat stabilized or stable to heat
	Light stabilized or stable to light
	U.V. stabilized or stable to weather

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