H.B. Fuller EV Bond 420

H.B. Fuller EV Bond 420 is a high-performance, two-part acrylate adhesive engineered to bond a wide range of plastics, metals, and composite assemblies. It offers outstanding bond strength, is extremely durable, and has excellent impact and weathering properties. EV Bond 420 greatly increases the reliability of finished assemblies, its ability to withstand extreme temperature fluctuations, and its resistance to a wide range of chemicals and environmental conditions. EV Bond 420GB allows control of the adhesive gap to a diameter of 0.25mm (0.01").

Product Type2K (2 component) Adhesive, Reactive Adhesive, Structural Adhesive

Application AreaBatteries, Battery Packs, Electric Vehicle (EV)

Compatible Substrates & SurfacesAcrylic, Acrylonitrile Butadiene Styrene (ABS), Aluminum, Coated Surfaces, Composites, Epoxies, Fiberglass, Metal, Phenolics, Plastics, Polycarbonate (PC), Polyurethane, RIM Urethane, Stainless Steel

Chemical FamilyAcrylics & Acrylates

FeaturesChemical Resistant, Excellent Performance, Flame Retardant, Good Adhesion, Good Bonding Strength, Good Weather Stability, High Durability, High Impact Resistance, Low Odor

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Typical Features & Benefits
  • No Surface Preparation Required
  • Excellent Strength to Metals, E-Coat, Thermoplastics, Thermosets, and Engineering Plastics
  • UL94 V0 Flame Retardancy
  • Suitable for Easy Manual and Pneumatic Dispensing
  • Room Temperature Cure
  • 10:1 meter-mix product for ease of application
  • Use on as received metal surfaces including aluminum, stainless and plated steels and forms tough, high strength bonds without surface preparation

Applications & Uses

Recommended For

Metals

  • Aluminum
  • Steel
  • Stainless
  • E-Coated Metal

Thermosets

  • Fiberglass
  • Phenolic
  • Gel Coat
  • Epoxy
  • RIM Urethane
  • Polyurethane
  • Liquid Molding Resin

Thermoplastics

  • Acrylic
  • ABS
  • Polycarbonate
Application Details

The product is best used at temperatures between 65°F and 80°F. Temperatures below 65°F will slow the cure speed of the material and viscosities will be higher. Temperatures above 80°F will cause the material to cure faster and viscosities will be lower. For consistent dispensing maintain temperature in the above mentioned range. For optimum bond strength and to ensure maximum performance in the finished assembly, mate parts together within the specified work time of the adhesive. Make sure the bond joint has uniform coverage and that a sufficient amount of adhesive is in the bond area. It is important to have the adhesive applied, parts aligned and positioned, within the established work times for the product. To ensure maximum performance in the finished assembly, parts should remain undisturbed until the fixture time is reached.

Clean Up

Clean up is best before the adhesive has cured. Cleaners containing NMP (N-methyl pyrolidone) or Citrus terpene provide the best results. On cured adhesive repeat use may be required.

Properties

Physical Properties
ValueUnitsTest Method / Conditions
Mixed Density1.67g/cc
Volume Mix Ratio10:1
Weight Mix Ratio14:1
Cured Properties
ValueUnitsTest Method / Conditions
Over Lap Shear Strength (Aluminum, at 25°C, 50% RH)15MPaASTM D1002
Over Lap Shear Strength (Carbon steel, at 25°C, 50% RH)15MPaASTM D1002
Over Lap Shear Strength (Nickel coated low - carbon steel plated, at 25°C, 50% RH)20MPaASTM D1002
Hardness70.0ASTM D2240, Shore D
Dielectric Strength17.6 - 19.4kV/mm
Elongation at Breakmin. 3%
Thermal Service Range-67 - 212°F
Uncured Properties
ValueUnitsTest Method / Conditions
Flash Pointmin. 200°F
Open Time6 - 9minutes
Fixture Time15 - 20minutes
Cure TemperatureRoom temperature
Cure Time24.0hours
Rheological Properties
ValueUnitsTest Method / Conditions
Viscosity (Resin, RV7, 20 rpm, at 25°C)100,000 - 200,000cPsBrookfield
Viscosity (Activator, at 25°C, RV7, 20 rpm)40,000 - 80,000cPsBrookfield

Packaging & Availability

Packaging Type
Regional Availability
  • Africa
  • Asia Pacific (Excluding Russia)
  • Europe (Excluding Russia)
  • India
  • Latin America
  • Middle East
  • North America
Typical Packaging

EV Bond 420 is conveniently packaged in 50 ml, 490 ml, pail, and drum kits.

Storage & Handling

Storage and Shelf Life
  • Product should be stored in a cool dry place out of direct sunlight. The shelf life of EV Bond 420 is 9 months from date of manufacture. Shelf life is based on the products being stored properly at temperatures between 55°F and 75°F.
  • Exposure to temperatures above 75°F will reduce the shelf life. This product should never be frozen.