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Celanex® 2500 40/4118

Technical Datasheet | Supplied by Celanese
Celanex® 2500 40/4118 by Celanese is an unreinforced, nucleated, semi-crystalline polybutylene terephthalate (PBT). Exhibits easy flow, high strength, rigidity & toughness, low creep even at high temperatures, rapid crystallization, fast cycle time, paintability, good electrical properties, no environmental stress cracking, good weathering resistance, very good low friction and wear resistant properties.
  • Offers excellent dimensional stability, low moisture absorption and powerful insulation resistance, along with resistance to a wide range of chemicals, solvents, oils and greases.
  • Can be processed using injection molding.
  • Celanex® 2500 40/4118 is recognized by Underwriters Laboratories, USA (UL), as UL 94 HB at 1.0 mm thickness and complies with the PFOS, PFOA and RoHS regulations.
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Product Type
Polyester > PBT
Product Status
AVAILABILITY NOT CONFIRMED *
Applications/ Recommended for
Injection molding - thermoplastics

Celanex® 2500 40/4118 Properties

Mechanical Properties

Value & Unit
Test Condition
Test Method
Nominal Strain at Break
15 %
(50 mm/min) 
ISO 527-2-1A
Impact Strength, Notched Charpy
5 kJ/m²
(23°C) 
ISO 179/1eA 2
Impact Strength, Notched Charpy
4.5 kJ/m²
(-30°C) 
ISO 179/1eA 2

Celanex® 2500 40/4118 Processing Guidelines

Injection Properties

Value & Unit
Test Condition
Test Method
Feed Temperature
190 - 200 °C
Flow Front Velocity
200 mm/sec
Manifold Temperature
250 - 260 °C

*The last time this product was checked, its availability could not be confirmed. If you have more information about its availability, please contact us.



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