Enhanced TDS
Identification & Functionality
- Chemical Family
- RTU Product Type
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
Applications & Uses
- Application Area
- Compatible Substrates & Surfaces
- Application Of Adhesives
- The resin/hardener mix may be applied manually or robotically to the pre-treated and dry joint surfaces.
- A layer of adhesive 0.05 to 0.10 mm thick will normally impart the greatest lap shear strength to the joint.
- The joint components should be assembled and secured in a fixed position as soon as the adhesive has been applied.
Properties
- Physical Form
Technical Details & Test Data
- Cured Properties
Recommended Cure Schedule
Temperature
Minimum Cure Time AY 103 + HY 951 or HY 956
at 77°F (25℃) 24 hrs. at 104°F (40℃) 8 hrs. at 140°F (60℃) 3 hrs. at 212°F (100℃) 20 min. Typical Properties
Property
Condition / Test Method
Value
Unit
Initial Viscosity at 77°F (25°C) 0.8-1.5 Pa·s Shear Strength at -76°F (-60°C), after 1 hr. at 248°F (120°C) 1812 psi Shear Strength at 68°F (20°C), after 24 hrs. at 68°F (20°C) 2538 psi Shear Strength at 68°F (20°C) , after 12 hrs. at 104°F (40°C) 2828 psi Shear Strength after 20 min. at 212°F (100°C) 290 psi Shear Strength at 194°F (90°C) 406 psi Shear Strength after 20 min at 212°F (100°C) 435.1 - 478.6 psi Shear Strength after 1 hr. at 248°F (120°C) 2538 psi Deflection Temperature BS 2782, Method 121A 113 - 140 °F Coefficient of Thermal Expansion ASTM D-696-70 95-100 × 10⁻⁶ in/in/°C Modulus of Elasticity BS 2782, Method 335A 435.1-478.6 ksi * Average shear strength of a 0.04 in (0.91 mm) BS L152 aluminum alloy lap joint (joint area was 0.5 x 1 inch (12.5 mm x 2.5 cm in each case.)
+ Average deflection temperature after curing for 3 hrs. at 140°F (60°C). Prolonged curing at temperatures above 140°F (60°C) will give a deflection temperature above 212°F (100°C) with HY 951 or approaching 212°F (100°C) with HY 956:
System
Cure Schedule
Deflection Temperature, °F (°C)
ARALDITE AY 557 + HY 951 16 hrs. at 77°F (25°C)
+ 1/2 hr. at 248°F (120℃)203 - 212 (95- 100) ARALDITE AY 557 + HY 951 3 hrs. at 140°F (60°C)
+ 2 hrs. at 248°F (120°C)257 -266 (125-130) ARALDITE AY 557 + HY 956 16 hrs. at 77°F (25°C)
+ 1/2 hr. at 248°F (120℃)203 - 212 (95- 100) ARALDITE AY 557 + HY 956 3 hrs. at 140°F (60°C)
+ 2 hrs. at 248°F (120°C)257 -266 (125-130) - Processing Information
Processing
- Because of heat generated by the exothermic reaction between resin and hardener, the application time of the mixed epoxy adhesive will be noticeably shortened if more than 250 grams of mixture is allowed to stand in a compact mass, as in a mixing container.
- Since the resin system has a limited usable life, it is good practice to prepare only the quantity of adhesive needed for immediate use or to use automatic mixing/dispensing equipment.
Storage & Handling
- Storage Conditions
- ARALDITE® epoxy adhesive components should be stored in a dry place, in the sealed original container, at temperatures between +2°C and +40℃ (+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.