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Forbest Plastik
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PBT — Representative imageRepresentative image
Representative image of PBT; the actual colour and pellet shape vary by supplier.
Engineering Plastics

PBT

Polybutylene terephthalate

Unlike polyamides, PBT is unaffected by moisture, dimensionally stable and has excellent electrical properties. It crystallises fast and moulds with short cycle times; its glass-fibre and flame-retardant grades are a core material of the electrical and electronics industry. Continuous use is in the 120–140 °C range.

1,31 g/cm³
Density
225 °C
Melting point
55–60 MPa
Tensile strength
55–65 °C
HDT (1.8 MPa)

Values are typical ranges for the material family; binding values are in the TDS sent with the quotation.

  • Electrical insulation
  • Chemical resistance
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Price and lead time are given in the quotation according to quantity and delivery terms; there is no list price on the site.

Overview

PBT is the standard grade of the PBT family in the engineering plastics group. It is used in applications such as connectors, coil formers and relay housings, headlamp and mirror-mechanism parts, small-appliance components. The grade with the right flow for injection, extrusion or another process is specified in the quotation together with your quantity and colour; TDS and SDS are sent with the quotation.

Typical properties

PropertyTypical value
Density1,31 g/cm³
Melting point225 °C
Tensile strength55–60 MPa
HDT (1.8 MPa)55–65 °C

Tensile strength is measured to ISO 527, melt flow rate to ISO 1133, heat deflection temperature to ISO 75 (1.8 MPa); flammability class per UL94. Depending on supplier and grade, values can fall outside this range.

Applications

  • Connectors, coil formers and relay housings
  • Headlamp and mirror-mechanism parts
  • Small-appliance components
  • Fibre-optic cable components

Industries: Automotive, Electrical and electronics, Appliances and small domestic appliances

Documents

The supplier's technical data sheet (TDS) and safety data sheet (SDS) for PBT are sent by e-mail with the quoted grade; because the same code has different sheets at different suppliers we do not publish a single file on the site. To see the sheet in advance, request it with the link below.

Related products

The right raw material is one quotation away.

Send the product code or application, quantity and process; the technical team defines the candidate material and sales replies with price, lead time and the data sheet.

Request a quoteCall: 0212 671 20 91