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Ultradur® B 6550 L

Ultradur® B 6550 L by BASF is a high viscosity, unreinforced, polybutylene terephthalate. It is used for the extrusion of loose buffer tubes for optical fibers and boards, semi-finished products for machining, profiles and pipes. It is processed by injection molding.

Ultradur® B 6550 L Properties

Mechanical Properties

Value & Unit

Test Condition

Test Method

Nominal Tensile Strain at Break

> 50 %

(At 23°C, v=50 mm/min)

ISO 527-1/-2

Flexural Modulus

2030 MPa

(At 23°C)

ISO 178

Flexural Strength

76 MPa

(At 23°C)

ISO 178

Injection Molding Properties

Value & Unit

Test Condition

Test Method

Mold Temperature

40 - 80 °C

Melt Temperature

250 - 275 °C

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Ultradur® B 6550 L

Ultradur® B 6550 L Properties

Mechanical Properties

Ultradur® B 6550 L Processing Guidelines

Injection Molding Properties