ARALDITE® AV 8503 / HARDENER HV 8503

ARALDITE® AV 8503 / HARDENER HV 8503 is a two-component paste with a one-to-one by volume mix ratio. It is designed for bonding sheet molding compound. ARALDITE® AV 8503 / HARDENER HV 8503 fixes itself in one minute on a heated fixture at 240°F (116°C). It requires only a dry wipe for surface preparation before bonding.

RTU Product Type: 2K (2 component) Adhesive, Epoxy Adhesive

Compatible Substrates & Surfaces: Metal, Plastics, Sheet Molding Compound (SMC)

Chemical Family: Epoxy & Epoxy Derivatives

Features: Fast Fixation, Good Flexibility, Very Good Heat Resistance

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Enhanced TDS

Identification & Functionality

Chemical Family
Epoxy & Epoxy Derivatives
RTU Product Type
2K (2 component) Adhesive,
Epoxy Adhesive
Technologies
Adhesives & Sealants
Product Families
Adhesives & Sealants — Functional Adhesives
Structural Adhesives

Features & Benefits

Ready-to-Use Product Features
Fast Fixation,
Good Flexibility,
Very Good Heat Resistance
Advantages
  • Fast fixture time
  • Good flexibility
  • Convenient mix ratio
  • Minimal surface preparation required
  • Good heat resistance

Applications & Uses

Compatible Substrates & Surfaces
Metal,
Plastics,
Sheet Molding Compound (SMC)
Markets
Industrial
Applications
Industrial — Chemical & Industrial Manufacturing
Equipment & Parts
Processing Information

Curing Condition

Temperature

Handling Strength

Minimum Cure Time
77°F (25°C) 4 hours 24 hours
250°F (120°C) 1 minute 5 minutes
Application Information
  • Sheet Molding Compound
  • Plastics
  • Metals

Properties

Physical Form
Paste

Technical Details & Test Data

Typical Cured Information

Cured adhesive properties evaluated on SMC (automotive grade, dry wiped) and Aluminum (Acia 2024 T3)etched per ASTM D-2851 methods. Unless otherwise stated, lap shear testing determined with 0.030 inch (0.76 mm) bond line thickness and 0.5 x 1 inch (12.5 mm x 2.5 cm) joint area.

Substrate Cure Cycle Test Temperature (°F/°C) Lap Shear Strength (Psi/MPa) Unit
SMC 1 hour -40 °F (-40 °C) 630 (4) psi (MPa)
1 hour 250 °F (120 °C) 430 (3) psi (MPa)
1 hour 77 °F (25 °C) 430 (3) psi (MPa)
1 hour 140 °F (60 °C) 380 (2.5) psi (MPa)
Aluminum 1 hour 77 °F (25 °C) 3380 (23) psi (MPa)
1 hour 250 °F (120 °C) 2420 (17) psi (MPa)
1 hour 140 °F (60 °C) 2420 (17) psi (MPa)
1 hour 179 °F (82 °C) 2370 (16) psi (MPa)
1 hour 212 °F (100 °C) 1400 (10) psi (MPa)

 

Substrate Cure Cycle Bond Line Thickness Lap Shear Strength (Psi/MPa) Unit
SMC 1 hour 0.030 in / 0.76 mm 430 (3) psi (MPa)
1 hour 0.125 in / 3 mm 260 (2) psi (MPa)
1 hour 0.250 in / 6 mm 165 (1) psi (MPa)

 

Substrate Cure Cycle Environmental Condition Lap Shear Strength (Psi/MPa) Unit
SMC 1 hour Initial 430 (3) psi (MPa)
1 hour @ 250 °F (120 °C) Salt Spray (500 hrs.) 360 (2.5) psi (MPa)
1 hour Water Soak (7 days) 310 (2) psi (MPa)
1 hour Scab Cycle (20 cycles) 300 (2) psi (MPa)

 

Property Test Method Test Values Unit
T-peel Strength ASTM D-1876 10 (1.75) Pli (N/mm)
Wedge Test (Break Energy) SAE J882 75 (4,003) Ft.-lb/in. (J/mm)
Impact Strength GM 9751 P 50 (2,669) Ft.-lb/in. (J/mm)

Storage & Handling

Storage Conditions

Araldite® AV 8503 Resin/Hardener HV 8503 epoxy adhesive should be stored in a dry place, in the sealed original container, at temperatures between +2°C and +40°C (+36°F and 104°F). Under these storage conditions, the shelf life is 3 years. The product should not be exposed to direct sunlight. If stored below 60°F, the adhesive should be brought to 60°F - 77°F and conditioned at this temperature for some time prior to use.