Loctite AA H4500 Multi-Substrate Bonding Acrylic Adhesive Overview

Loctite AA H4500 is a two-part, thixotropic adhesive system designed for high-strength bonding across a variety of substrates. This gray adhesive features a 10:1 mix ratio and maintains its strength over a wide range of temperatures. Suitable for metals, epoxy-coated materials, SMC, and plastics, it offers excellent environmental resistance, high impact and peel strength, and requires no primer for application.

Loctite AA H4500 Features and Benefits

• Wide Temperature Tolerance: Maintains bond strength under extreme conditions.
  
• Primer Not Required: Simplifies application for faster assembly.
  
• High Impact and Peel Strength: Provides durable bonds capable of withstanding stress.
  
• Thixotropic Formula: Ideal for gap filling up to 12.7 mm.
  
• Off-Ratio Mixing Tolerance: Ensures reliable performance even with slight mix deviations.

Specifications

• Series: Loctite AA H4500
  
• Type: Two Part Acrylic Adhesive
  
• Components: Resin & Hardener
  
• Application: Bonding
  
• Substrates: Steel, Aluminum, Stainless Steel, Epoxy Coated Metal, SMC, Plastic
  
• Color: Gray
  
• Available Sizes: 50 mL and 490 mL Cartridges
  
• Mix Ratio by Volume: 10:1
  
• Cure: Room Temperature Cure After Mixing
  
• Cure Time: 24 Hours @ 77°F (25°C)
  
• Shore D Hardeness: 73
  
• Working Time: 15 Minutes
  
• Fixture Time: 10 to 15 Minutes
  
• Glass Transition Temperature (Tg): 224.6°F (107°C)
  
• Linear Shrinkage: 6.2%
  
• Volume Shrinkage: 17.5%
  
• Elongation at Break: 11%
  
• Elongation at Yield: 5%
  
• Tensile Strength at Yield: 4,660 psi (32 N/mm²)
  
• Tensile Modulus: 198,700 psi (1,370 N/mm²)
  
• Storage Temperature: 35.6°F to 46.4°F (2°C to 8°C)
  

Recommended Applications

Ideal for bonding steel, aluminum, stainless steel, SMC, and plastics. Suitable for applications requiring high peel and impact strength in challenging environmental conditions.