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Plastics & Elastomers
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Plastics & Elastomers
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Ultradur® B 4520

Technical Datasheet | Supplied by BASF
Ultradur® B 4520 is an unreinforced, medium viscosity, semi-crystalline, saturated, thermoplastic polyester derived from polybutylene terephthalate (PBT). It is available as natural, black, colored and in special colors. Exhibits rapid freezing, toughness, high rigidity & strength, good dimensional stability under heat, good impact resistance, very high resistance to wear, thermostability, sliding friction properties, good insulation properties, good impact strength, low water absorption, good resistance to chemicals & weathering, and excellent heat ageing behavior. Can be processed using injection molding. Recommended for chassis, housings, technical parts of home appliances, office & sewing machines, and coil formers. It complies with the EU Directive 2006/122/EC (PFOA), EU Directive 2011/65/EU (RoHS) and EC Regulation 1907/2006 (REACH).
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Product Type
Polyester > PBT
Appearance
Colors available
Product Status
COMMERCIAL

Ultradur® B 4520 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Viscosity number
130 cm³/g
(23°C)
ISO 1628, ISO 1157, ISO 307
Density
1300 kg/m³
(23°C)
ISO 1183
Viscosity number
130 cm3/g
(23°C)
ISO 1628, ISO 1157, ISO 307

Ultradur® B 4520 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Suggested Max Moisture
0.04 %
Hopper Throat Temperature
80 °C
Drying Temperature
80 - 120 °C
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