ULTRADUR® B 4500 FC Natural Polybutylene Terephthalate

1 of 61 products in this brand
ULTRADUR® B 4500 FC Natural Polybutylene Terephthalate is a medium-viscosity grade suitable for injection molding, extruded cast films, and thin-walled profiles and pipes in food contact applications. Compliant with various food regulatory legislations.

Polymer Name: Polybutylene Terephthalate (PBT)

Processing Methods: Cast Film Extrusion, Extrusion, Film Extrusion, Injection Molding, Profile Extrusion

Flexural Modulus:: 2,300.0 MPa

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Identification & Functionality

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Features & Benefits

Applications & Uses

Properties

Color (Properties)
Flame Rating
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Modulus2500.0MPaISO 527-1/-2
Yield Stress (50 mm/min)55MPaISO 527-1/-2
Yield Strain (50 mm/min)3.7%ISO 527-1/-2
Nominal Strain at Break (50 mm/min)min. 50%ISO 527-1/-2
Tensile Creep Modulus (1000 H, Strain < 0.5%, at 23°C)1200MPaISO 899-1
Charpy Unnotched Impact Strength (at 23°C)290kJ/m²ISO 179/1eU
Charpy Unnotched Impact Strength (at -30°C)180kJ/m²ISO 179/1eU
Charpy Notched Impact Strength (at 23°C)5kJ/m²ISO 179/1eA
Charpy Notched Impact Strength (at -30°C)4kJ/m²ISO 179/1eA
Flexural Modulus2300.0MPaISO 178
Flexural Strength85.0MPaISO 178
Ball Indentation hardness (at 358 N/30 S)130MPaISO 2039-1
Izod notched Impact Strength (23°C)55J/mASTM D 256
Typical Properties
ValueUnitsTest Method / Conditions
Polymer AbbreviationPBT--
Density1300.0kg/m³ISO 1183
Viscosity Number (Solution 0,005 g/ml Phenole/1,2 Dichlorbenzol 1:1)130cm³/gISO 307, 1157, 1628
Natural (at 23°C)Passed--
Water Absorption (Equilibrium in Water, at 23°C)0.5%similar to ISO 62
Moisture Absorption, Equilibrium (at 23°C/50% r.h)0.25%similar to ISO 62
Bulk Density0.7 - 0.8g/cm³-
Thermal Properties
ValueUnitsTest Method / Conditions
HDT A (1.80 MPa)65°CISO 75-1/-2
HDT B (0.45 MPa)165°CISO 75-1/-2
Service Temperature (Short Cycle Operation)max. 200°C-
Coefficient of Linear Thermal Expansion, Longitudinal (at 23°C - 55°C)110.0 x 10⁻⁶/KISO 11359-1/-2
Coefficient of Linear Thermal Expansion, Transverse (at 23°C - 55°C)110.0 x 10⁻⁶/KISO 11359-1/-2
Thermal Conductivity0.27W/(m K)DIN 52612-1
Specific Heat Capacity1250J/(kg*K)-
Electrical Properties
ValueUnitsTest Method / Conditions
Relative Permittivity (100 Hz)3.3-IEC 62631-2-1
Relative Permittivity (1 MHz)3.3-IEC 62631-2-1
Dissipation Factor (100 Hz)10.0 x 10⁻⁴IEC 62631-2-1
Dissipation Factor (1 MHz)200.0 x 10⁻⁴IEC 62631-2-1
Volume Resistivity1×10 ¹⁴Ohm.mIEC 62631-3-1
Surface Resistivity1×10¹³OhmIEC 62631-3-2
Comparative Tracking Index - CTI550-IEC 60112,Test LIquid A
Comparative Tracking Index - CTI M450-IEC 60112,Test Liquid B
Electric Strength K20/K20, (60*60*1 mm³)36kV/mmIEC 60243-1
Flammability
ValueUnitsTest Method / Conditions
Burning Behaviour (at Thickness D = 1.5 mm) HB class IEC 60695-11-10
Burning Behaviour (at Thickness D = 0.75 mm) HB classIEC 60695-11-10
Automotive Materials (Thickness D > 1mm) ³Passed-ISO 3795, FMVSS 302
Burning Behaviour (at Thickness D = 3 mm) HB classUL-94, IEC 60695
Yellow Card availableYes-UL-94, IEC 60695
Oxygen Index20.0%ISO 4589-1/-2
Processing Properties
ValueUnitsTest Method / Conditions
Melt Volume flow Rate (at 250°C and 10 kg) 19.0 cm³/10minISO 1133
Melting Temperature 223.0 °CISO 11357-1/-3, DSC
Melt Temperature (Injection Molding/Extrusion)250 - 275°C-
Mould Temperature (Injection Moulding)40 - 70°C-
Molding Shrinkage (Parallel)1.6%ISO 294-4
Molding Shrinkage (Normal)1.9%ISO 294-4
Note

1. If product name or properties don't state otherwise.

2. The asterisk symbol '*' signifies inapplicable properties.

3.+ = passed

Regulatory & Compliance

Safety & Health

Product Safety

Ultradur® melts are stable at temperatures up to 280°C and do not give rise to hazards due to molecular degradation or the evolution of gases and vapors.

Like all thermoplastic polymers, however, Ultradur decomposes on exposure to excessive thermal stresses, e.g. when it is overheated or as a result of cleaning by burning off. At temperatures of > 290°C can be emitted: carbon monoxide, tetrahydrofuran.Under special fire conditions traces of other toxic substances are possible.

Formation of further decomposition and oxidation products depends upon the fire conditions. When Ultradur® is properly processed and there is adequate suction at the die no risks to health are to be expected.Further safety information see safety data sheet of individual product.

Packaging & Availability

Packaging Conditions

Standard packaging includes the 25-kg-bag, the 1000 kg octabin (octagonal container) or the 1000 kg big bag.

All containers are tightly sealed and should be opened only immediately prior to processing.

Storage & Handling

Storage Conditions

Ultradur® can be stored for a longer period of time in dry, well vented rooms without causingproblems in processing.

Ultradur® should generally have a moisture content of less than 0,04% when being processed.

In order to ensure reliable production, therefore, pre-drying should generally be the rule and the machine should be loaded via a closed conveyor system.   

In order to prevent the formation of condensed water, containers stored in unheated rooms must only be opened when they have attained the temperature prevailing in the processing area.

Measurements have shown that the interior of a 25-kg bag originally at 5°C had reached the temperature of 20°C in the processing area only after 48 hours.