LOCTITE EA E-20NS

Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

LOCTITE EA E-20NS

Main features

  • Non-Sag Vertical Bonding
  • Tough High-Peel/Shear Bonding
  • Electrically Insulating Multi-Material Bonding

Product Description

LOCTITE® EA E-20NS™ is a two-component, industrial-grade epoxy adhesive that cures at room temperature to form an off-white, tough bondline. Its non-sagging, medium-viscosity formulation supports controlled application on vertical surfaces while reducing run-off. The adhesive develops strong bonds on aluminum, stainless steel and other metals, as well as glass, ceramics and selected plastics. It has a 20-minute working life and provides high peel resistance, high shear strength and electrical insulation after full cure. The cured material also resists a range of chemicals and solvents.

Key features

  • Non-sagging consistency: Supports application on vertical surfaces without excessive run-off.
  • Tough bonded joints: The cured epoxy provides high peel resistance and high shear strength.
  • Electrical insulation: Fully cured material has a typical dielectric breakdown strength of 24 kV/mm.

Applications / Suitable for

  • Bonding aluminum, stainless steel and other metals
  • Bonding glass and ceramics
  • Bonding compatible plastics
  • Vertical-surface bonding where non-sag application is required
Product Family

LOCTITE EA E-20NS

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Color
The color
Off white
Mix Ratio
The amount of a constituent divided by the total amount of all other constituents in a mixture
2:1
Physical Properties
Viscosity (Part A)
80,000-280,000 mPa.s
Viscosity (Part B)
30,000-90,000 mPa.s
Mechanical Properties
Elongation
Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
4 %
Electrical Properties
Dielectric Strength
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material. Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property. As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.
24 kV/mm

Additional Information

Technical properties

As-supplied / before-processing properties

Typical properties of the separate resin and hardener components and the material after mixing.

Property Value Unit Method / condition
Mix ratio, resin to hardener 2:1 By volume Two-component system
Mix ratio, resin to hardener 100:48 By weight Two-component system
Resin viscosity 80,000–280,000 mPa·s (cP) Brookfield RVT, 25 °C, spindle 7, 20 rpm
Hardener viscosity 30,000–90,000 mPa·s (cP) Brookfield RVT, 25 °C, spindle 7, 50 rpm
Mixed specific gravity 1.43 — At 25 °C
Working life 20 min Mixed material
Tack-free time 20 min Mixed material
Mixed appearance Off-white — After resin and hardener are mixed

After-processing / final-state properties

Typical physical, electrical and adhesive properties after curing under the stated conditions.

Property Value Unit Method / condition
Glass transition temperature 75 °C Cured at 25 °C
Coefficient of thermal expansion 52 × 10−6 pre-Tg; 183 × 10−6 post-Tg K−1 ISO 11359-2; cured at 25 °C
Shore hardness 84–94 Shore D ISO 868; cured at 25 °C
Elongation 4 % ISO 527-2; cured at 25 °C
Tensile strength 23 N/mm² ISO 527-2; cured at 25 °C
Dielectric breakdown strength 24 kV/mm IEC 60243-1; cured at 25 °C
Lap shear strength on grit-blasted steel 19.2 N/mm² Cured 5 days at 22 °C
Lap shear strength on acid-etched and abraded aluminum 17.3 N/mm² Cured 5 days at 22 °C; 0.1–0.2 mm bondline gap

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