BASF Ultradur® B 2550 PBT

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BASF Ultradur® B 2550 PBT
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), Unreinforced, Molded
Material Notes:	Ultradur B2550 is an unfilled, very free-flowing grade for coating paper and board with high heat resistance, for example for packaging of frozen goods and ready-prepared meals. Also suitable for injection-molding applications, where good flow properties are important It conforms to FDA requirements of 21 CFR 177.1660.
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Physical Properties	Original Value	Comments

Density	1.30 g/cc	ISO 1183
Water Absorption	0.50 %	ISO 62
Moisture Absorption at Equilibrium	0.25 %	23°C/50% R.H.; ISO 62
Viscosity Number	107 cm³/g
Linear Mold Shrinkage, Flow	0.015 cm/cm
	0.016 cm/cm	60x60x2mm; ISO 294
Linear Mold Shrinkage, Transverse	0.015 cm/cm
	0.019 cm/cm	60x60x2mm; ISO 294
Melt Flow	52 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 at Break	57.0 MPa	5mm/min; ISO 527-2
Tensile Strength, Yield	57.0 MPa	50mm/min; ISO 527-2
Elongation at Break	35 %	50mm/min; ISO 527-2
Elongation at Yield	3.7 %	50mm/min; ISO 527-2
Modulus of Elasticity	2.50 GPa	ISO 527-2
Charpy Impact Unnotched	25.0 J/cm²	ISO 179/1eU
Charpy Impact, Notched	0.600 J/cm²	ISO 179/1eA
Dart Drop, Total Energy	100 J	ISO 6603-1
Tensile Creep Modulus, 1000 hours	1100 MPa	ISO 899-1

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+16 ohm-cm	IEC 93
Surface Resistance	1.00e+13 ohm	IEC 93
Dielectric Constant	3.3 @Frequency 100 Hz	IEC 250
	3.3 @Frequency 1e+6 Hz	IEC 250
Dielectric Strength	40.0 kV/mm	IEC 243/1
Dissipation Factor	0.0013 @Frequency 100 Hz	IEC 250
	0.020 @Frequency 1e+6 Hz	IEC 250
Comparative Tracking Index	450 V	Test Liquid B; IEC 112
	500 V	Test liquid A; IEC 112

Thermal Properties	Original Value	Comments
CTE, linear	13.0 - 16.0 µm/m-°C @Temperature 23.0 - 80.0 °C	DIN 53752
Specific Heat Capacity	1.50 J/g-°C	Melt; IEC 1006
Thermal Conductivity	0.270 W/m-K	Melt; DIN 52612
Melting Point	220 - 225 °C	ISO 11357-3
Maximum Service Temperature, Air	120 °C	at 50% loss of tensile strength after 20000h; IEC 216-1
	140 °C	at 50% loss of tensile strength after 5000h; IEC 216-1
	200 °C
Deflection Temperature at 0.46 MPa (66 psi)	165 °C	ISO 75-2
Deflection Temperature at 1.8 MPa (264 psi)	65.0 °C	ISO 75-2
Flammability, UL94	HB @Thickness 1.60 mm
	HB @Thickness 0.800 mm

Processing Properties	Original Value	Comments
Melt Temperature	245 - 270 °C	Injection molding
	230 - 290 °C	Coating
	260 °C	for shrinkage test
Mold Temperature	40.0 - 70.0 °C	Ejection temperature
	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	Injection Molding and Coating
Processing	Coating
	Film Extrusion
	Injection Molding
	Other Extrusion
Special characteristic	Heat stabilized or stable to heat
	Light stabilized or stable to light
	U.V. stabilized or stable to weather
UL.UL-C	Yes

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