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Plastics & Elastomers
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Arnite® TV4 491

Technical Datasheet | Supplied by DSM
Arnite® TV4 491 by DSM is a polybutylene terephthalate and polyethylene terephthalate alloy (PBT + PET) reinforced with 50% glass fiber. Is suitable for processing by injection molding. Offers durability, excellent dimensional stability, high thermal and oxidative stability, good color-stability, high stiffness, good wear resistance, low coefficient of friction and low moisture absorption. Arnite® TV4 491 provides high crystallinity to ensure rapid cooling times, outstanding creep properties and excellent dielectric strength at elevated temperatures. Shows resistance against heat, aliphatic hydrocarbons, motor vehicle fuels, oils and greases, dilute acids and bases, detergents and salt solutions. Meets ISO 1043 for PBT.
Product Type
Polyester > PBT + PET
Physical Form
Product Status
Geographical Availability
Central and Eastern Europe, Western Europe
Applications/ Recommended for
Injection molding - thermoplastics
Labels/Agency Rating
ISO 1043 (PBT+PET)
Key Features
  • Fuel Resistant
  • Creep Resistance, Good
  • Moisture Absorption, Low
  • Durable
  • Dimensional stability, Good
  • Grease Resistant
  • Heat Resistance, High
  • Stiffness, High
  • Base Resistant
  • Hydrocarbon Resistant
  • Crystalinity, High
  • Color stability, Good
  • Friction, Low
  • Oil Resistant
  • Acid Resistant
  • Filled, Glass Fiber

Arnite® TV4 491 Properties

Mechanical Properties

Value & Unit
Test Condition
Test Method
Impact Strength, Charpy
55 kJ/m²
ISO 179/1eU
Impact Strength, Notched Charpy
9.5 kJ/m²
ISO 179/1eA
Tensile Modulus
16500 MPa
( )
ISO 527-1/2

Arnite® TV4 491 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Mold Temperature
60 - 100 °C
Center Temperature
230 - 250 °C
Moisture Content
0.02 %

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