Aluminum is the world's most abundant metal and is extremely versatile. It offers low density, high strength, durability, recyclability, resists corrosion and is economical. Master Bond formulates a wide range of adhesives for bonding aluminum to aluminum and aluminum to other substrates. These one and two part adhesives are used in the manufacturing of:
- Aerospace components
- Heat sinks
- Satellite components
- Cryostats
- Lasers
- Thermal spray coatings
- Bearings
- Actuators
- Heaters
- Temperature Sensors
- LED assemblies
- Gauges
For more information on bonding aluminum substrates take a look at our surface preparation guide.
Popular Structural Adhesives
| System Type | Product | Tensile Lap Shear, 75°F, Aluminum-Aluminum | Recommended Cure Schedule |
| One part | Supreme 10HT | 3600-3800 psi | 1-2 hours @ 250-350°F |
| Two part | Supreme 11HT | 3200-3400 psi | Overnight @ room temperature, plus 5 hours @ 150-200°F | Two part | EP31ND | 4000-4200 psi | Overnight @ room temperature, plus 5 hours @ 150-250°F |
| One part | FLM36-LO | 4000-4400 psi | 2-4 hours @ 350-400°F |
| One part | EP15ND-2 | 2600-2800 psi | 2-4 hours @ 350-400°F |
Other Consideration for Bonding Aluminum Substrates
Although a high lap shear strength is a key requirement to provide a high strength to weight ratio when bonding aluminum, there are many other properties which may be critical. These include but are not limited to thermal conductivity for heat dissipation, good thermal cycling resistance and toughness. Toughened adhesives offer superior durability and resistance to thermal cycling. Most significant products include: Supreme 10HT, Supreme 11HT, Supreme 11AOHT and Supreme 42HT-2. No mix, Supreme 10HT epoxy adhesive cures upon exposure to elevated temperatures. Master Bond Supreme 11HT has a convenient one to one mix ratio. It is designed to cure at ambient temperatures. Thermally conductive, electrically insulative Supreme 11AOHT is noted for its exceptional heat dissipation properties. Solvent-free, Supreme 42HT-2 can be applied on vertical surfaces without sagging.
Master Bond Popular Products
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Supreme 42HT-2 High temperature resistant epoxy adhesive. Toughened. Excellent bond strength. Withstands exposure to many acids, bases, solvents, fuels and oils. Easy application. Service temperature range -80°F to +450°F. Good flow properties. Low exotherm. Long working life. Reliable electrical insulator. Resists thermal cycling. |
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Supreme 11AOHT Thermally conductive, electrically insulative epoxy adhesive. Meets MIL-STD-883J Section 3.5.2 for thermal stability. High peel and shear strength properties. Non-drip system. Resists -112°F to +400°F. Toughened system. Can withstand rigorous thermal cycling. Convenient one to one mix ratio by weight or volume. Cures at room temperature. |
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EP30LTE-4 Extra low thermal expansion coefficient and unmatched dimensional stability. Used for bonding, sealing, coating, casting. Service operating temperature range from -60°F to +250°F. Mixed viscosity 15,000-20,000 cps. Ambient temperature curing. |
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EP33ND Non-drip thixotropic epoxy paste. Demonstrated radiation stability at high radiation dosages. Serviceable from -60°F to +450°F. Gap filling. One to one mix ratio by volume. Adheres well to similar and dissimilar substrates. Cures at ambient temperatures. Post cure to optimize properties. Readily machinable. |
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EP46HT-1 Oven curing two part epoxy system. Resists from -100°F to +600°F. Tg of 230-240°C . Superb choice as matrix resin for fiber reinforced heat resistant composite structures. Exceptional strength properties. Robust chemical resistance. Long working life after mixing. |
