PBT Injection Moulding

PBT resin offers excellent processability, electrical properties, and good surface finish quality

What Is PBT?

Polybutylene terephthalate (PBT) is semi-crystalline thermoplastic with excellent processibility and good mechanical properties, which make it a versatile general purpose resin for wide range of applications.

We offer four grades of PBT through our injection moulding service:

  • CCP 4115 104F 15% Glass Fibre: A glass fibre 15% reinforced injection moulding grade. Characterised by excellent electrical properties, excellent mechanic and chemical properties, excellent weather-ability, excellent wear properties, excellent mouldability, and high resistance to fuels, oil, fats and many solvents.
  • Celanex 2002-2: A general purpose, unreinforced polybutylene terephthalate with a good balance of mechanical properties and processability. Celanex 2002-2 is a medium flow material that contains an internal lubricant.
  • Celanex 2401: An unreinforced, high molecular weight PBT that complies with the requirements of CFR 21 177.1660 of the Food and Drug Administration (FDA). Contains no animal derived materials.
  • Ultradur B 4300 G10 50% Glass Fibre: Injection moulding grade with 50 % glass fibres for very rigid technical parts.

PBT Material Properties

  Tensile Strength
(Yield)		 Flexural Modulus Tensile Elongation (Break) Rockwell Hardness
(R-scale)		 Data Sheet
Test Method ISO 527 ISO 178 ISO 527 ASTM D785  
CCP 4115 104F 15% Glass Fibre
 1000 kg/cm³ (ASTM D638) 58,000 kg/cm³ (ASTM D930) 3.7% (ASTM D638) 120 Data sheet
Celanex 2002-2
 55.8 MPa (ASTM D638) 2,500 MPa 200% (ASTM D638) 78 (ISO 2039-2) Data sheet
Celanex 2401
 60.0 MPa 2,500 MPa 50% n/a Data sheet
Ultradur B 4300 G10 50% Glass Fibre
 n/a n/a n/a n/a Data sheet

PBT Applications

PBT resins are used for a wide range of applications due to its well-rounded mechanical properties.

  • Enclosures
  • Switches
  • Electrical components
  • Bobbins
  • Automotive parts