Applications

Araldite® AW4858/ Hardener HW4858 – Structural Adhesives –Bonding metals, composites, and thermoplastic

  • Item Name: Araldite® AW4858/ Hardener HW4858
  • Manufacturer: Huntsman Advanced Materials
  • Technologies: Two-component epoxy adhesive paste system that cures at room temperature with optional post-curing for enhanced performance; incorporates spacers to maintain a minimum bond line thickness of 0.05 mm for consistent joints
  • Color: Resin – Black; Hardener – Yellowish; Mixed adhesive – Black
  • Cure Type: Room temperature curing (with the possibility of post-curing at elevated temperatures)
  • Package Size: Contact to Avantek for details.
  • Shelf Life: Contact to Avantek for details.

1. Product Overview

Araldite® AW4858 / Hardener HW4858 is a two-component, toughened epoxy adhesive system designed for high-strength bonding applications. It provides excellent lap shear strength, high peel resistance, and good moisture resistance. The system is suitable for bonding metals, composites, and thermoplastics, making it ideal for structural applications. It features a long pot life and contains spacers to maintain a minimum bond line thickness of 0.05 mm.

2. Applications

  • Bonding large composite parts
  • Structural bonding of metals, composites, and thermoplastics
  • Aerospace, automotive, and industrial applications requiring high peel and shear strength
  • Assemblies exposed to dynamic loads and environmental conditions

3. Typical Properties

Before Mixing

Property Araldite® AW4858 (Resin) Hardener HW4858
Color Black Yellowish
Viscosity (mPa.s) 70,000 – 100,000 45,000 – 65,000
Density (g/cm³) 1.4 1.2
Mix Ratio (by weight) 100 50

After Mixing

Property Mixed Adhesive
Color Black
Pot Life (100g at 25°C) 90 – 120 min
Cure Type Room temperature curing (post-curing enhances properties)
Glass Transition Temperature (°C) ~80°C (higher with post-curing)
Lap Shear Strength (MPa) > 20 MPa (on aluminum)
Peel Strength (N/mm) High

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