Physical Properties (Uncured)
Viscosity @ 25 C: 140,000 CPS
Specific Gravity: 1.35
Shore Hardness (D): 65
THIX Index: 5-6
Flash Point: 51F
Physical Properties (Cured)
Shear: 3,800psi on AL
Peel: 60 pli on Steel
Impact: 20 ft lb/in on AL
Working Time: 7 to 8 Minutes
Handling Strength: 45 Minutes for 75% Overall Strength
Gap Fill: 0.250 Inches
Temperature Range: -45F to 225F
Clean-Up Solvents: MEK, Alcohol
Effects of Temperature:
AT-8040 is best used at temperatures between 65° F and 80° F. Temperatures below 65° F will slow the cure speed of the material and the viscosities will be higher. Temperatures above 80° F will cause the material to cure faster and the viscosities will be lower. For consistent dispensing maintain temperature as listed above.
Storage and Shelf Life:
The shelf life of AT-8040 is 1 year from the date of manufacture when refrigerated which is indicated on the cartridge. The product does not have to be refrigerated but then shelf life is 6 months when stored at a temperature no greater than 72° F. Exposure to temperatures above 72 F will further reduce the shelf life of the product. While refrigeration isn’t necessary it will extend the shelf life of the product in hot climates. AT-8040 should never be frozen.
AT-8040 is flammable. Keep it away from heat, sparks and open flames. Keep out of reach of children. This product is for industrial use only. Keep containers closed when not in use. Avoid contact with skin and eyes. Harmful if swallowed. Refer to Material Safety Data Sheet (MSDS) for more complete safety information.
It is highly recommended that either meter mix equipment or cartridges with static mix nozzles be used to properly ratio and dispense the adhesive. For hand mixing, combine Part A and Part B in the correct ratio and mix thoroughly. Heat buildup during and after mixing is normal. To reduce the likelihood of exothermic reaction or excessive heat buildup, mix less than 100 grams at a time. Mixing smaller amounts will minimize heat buildup.
For optimum bond strength and to insure maximum performance in the finished assembly mate parts together within the specified working time of the adhesive (7 - 8 Minutes). 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 time for the product. To ensure maximum performance in the finished assembly parts should remain undisturbed until the joint is sufficiently cured. For the highest strength bonds surfaces should be clean, dry, and free of contamination. Extensive surface preparation is not required for AT-8040 and good bonds can be formed on most substrates after a solvent wipe. However, we recommend that metal surfaces (particularly aluminum) be given a scotchbrite cleaning to remove surface oxidation to achieve the highest bond strengths.
It is important to remove excess adhesive from the substrate before it is cured. Solvent cleaners such as alcohol or acetone yield good results. Once the adhesive has cured it will be very difficult to remove and may require as much as 350° F to soften to allow removal.