Brand Scotch-weld Application Type Bond 1 Part or 2 Part 1 Part Material Form Liquid Substrate Aluminum Manufacturer 3M Chemistry Epoxy: Modified Epoxy Resin, No volatile, None Application Method Trowel, Knife coating Cure Method Heat cure Cure Temperature (°C) 138 to 149, 149 to 232, 176 to 178 Cure Time (min) 119 to 121 Viscosity (cPs) 40,000 to 80,000, Flowable Syrup Color White to Cream, White to Cream Chemical Resistance Salt spray Relative Solvent Resistance Chemical Resistance: Solvent High Temperature Resistance (°C) 149 Low Temperature Resistance (°C) -57 Density (g/cm³) 9.8 to 10.2 (weight (lbs/gal)) Key Specifications Mil-Spec (United States Military Standard): MMM-A-132: MMM-A-132 Type II, Class 3, Group 4
Technical Data for 3M Scotch-Weld Epoxy Adhesive 1469
- Adhesive - Bond
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
- Other - Impervious surfaces
- Dispenser - High pressure injection, Pump
- Roll - Roller coating
- Spatula/Trowel - Trowel, Knife coating
- Heat - Heat cure
- Off-White - White to Cream
- White - White to Cream
- Mil-Spec (United States Military Standard): MMM-A-132: Type II, Class 3, Group 4 - MMM-A-132 Type II, Class 3, Group 4
Cure Temperature (°C) 138 to 149, 149 to 232, 176 to 178 Test Method Cure Time (min) 119 to 121 Test Method Viscosity (cPs) 40,000 to 80,000, Flowable Syrup
Structural/Load-Bearing Structural General Bond Strength (psi) High Tensile Strength (psi) 3,695, 3,633, 2,260, 3,150, 3,081, 3,025, 3,603, 2,766, 2,766, 2,659, 2,651 Test Method
Chemical Resistance Salt spray Relative Solvent Resistance Chemical Resistance: Solvent High Temperature Resistance (°C) 149 Low Temperature Resistance (°C) -57 Moisture/Humidity Resistance Moisture/humidity resistance
Flash Point (°F) 220.0 % Solids (%) 100 Density (g/cm³) 9.8 to 10.2 (weight (lbs/gal))
Shelf Life Details 3M™ Scotch-Weld™ Epoxy Adhesive 1469 has a shelf life of 15 months from the date of shipment from 3M when stored in its original unopened container at 40°F (4°C) or below. Shelf life is 24 months if stored at 0°F (-18°C) or below., 3M™ Scotch-Weld™ Epoxy Adhesive 1469 has a shelf life of 15 months from the date of shipment from 3M when stored in its original unopened container at 40°F (4°C) or below. Shelf life is 24 months if stored at 0°F (-18°C) or below. Shelf Life Temperature (°F) <40, 0 Shelf Life Type Date of shipment, Shelf Life Type Shelf Life (mon) 15, 24
Best Practices for 3M Scotch-Weld Epoxy Adhesive 1469
A thoroughly cleaned, dry, grease free surface is essential for optimum performance. Cleaning methods which will produce a breakfree water film on metal surfaces are generally satisfactory. Surface preparations should be fully evaluated with the adhesive, especially if the need for resistance to specific environments is anticipated.
3M™ Scotch-Weld™ Epoxy Adhesive EC-1469 can be applied by a spatula, knife coating, notched trowel, or by extruding into place. Standard equipment is available which allows pumping directly from five-gallon pails. When extruded through a Pyles-Semco cartridge (3/32" orifice 55 psi line pressure), the delivery rate at 72°F (22°C) is approximately 40 grams/ minute. A lower viscosity for ease of application can be obtained by warming Scotch-Weld EC-1469 to 100-120°F (38-49°C). Note: Scotch-Weld EC-1469 may start to thicken if held at 120°F (49°C) for more than 3 hours
Flow and Cure Initiation Temperatures: Normal flow and cure initiation temperatures for 3M™ Scotch-Weld™ Epoxy Adhesive EC-1469 are as follows: Flow Temperature: 60°F (16°C), Cure Initiation Temperature: 280-300°F (138-149°C)
Cure Pressure: The only pressure needed during the cure of Scotch-Weld EC-1469 is that required to keep parts in alignment and to overcome distortion and thermal expansion in the adherends.
Cure Temperature: The cure temperature may be varied from 300°F to 450°F (149°C to 232°C), depending on the materials being bonded, equipment available and bond properties desired. Scotch-Weld EC-1469 will wet the surface to which it has been applied. Heating at temperatures above 300°F (149°C) will chemically convert the adhesive into a high strength solvent-resistant bond. Cure temperatures in excess of 400°F (204°C) yield useful, but lower than optimum strengths. At these temperatures the time cycle must be determined for specific application. Bond line temperature rise rates from 2°F to 200°F (-17°C to 93°C) per minute can be used without affecting strength properties. Curing ovens must be vented to the outdoors.
Caution: Large volumes of Scotch-Weld EC-1469, if heated rapidly at temperatures above 300°F (149°C), will exotherm and char. This will generally occur if an adhesive thickness of greater than 1/8" thick is cured.
Cure Time: Cure time depends on the cure temperature used, methods of heat application, production limitations and bond properties required. Since no two bonding operations are exactly alike, it is suggested that a few simple experiments be conducted, varying both temperature and cure time to determine optimum conditions for the particular application.
Excess adhesive and equipment may be cleaned up, prior to curing, with ketone* type solvent.
*Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow manufacturer’s precautions and directions for use.
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Cure Temperature Test Methods
|Cure Temperature||Cure Time Test Method|
|138 to 149°C||Cure Initiation|
|149 to 232°C|
|176 to 178°C|
Cure Time Test Methods
|Cure Time||Test Method|
|119 to 121 min|
Tensile Strength Test Methods
|Tensile Strength||Type||Chemical||Test Time||Test Temperature|
|3,695 psi||Tensile Shear||24°C|
|3,633 psi||Tensile Shear||10 min||149°C|
|2,260 psi||Tensile Shear||11,520 min||149°C|
|3,150 psi||Tensile Shear||10 min||-55°C|
|3,081 psi||Tensile Shear||Salt Water Spray||43,200 min||24°C|
|3,025 psi||Tensile Shear||43,200 min||24°C|
|3,603 psi||Tensile Shear||Tap water||43,200 min||24°C|
|2,766 psi||Tensile Shear||Jp-4 Fuel||10,080 min||24°C|
|2,766 psi||Tensile Shear||Anti-icing Fluid||10,080 min||24°C|
|2,659 psi||Tensile Shear||Hydraulic oil||10,080 min||24°C|
|2,651 psi||Type III Hydrocarbon Fluid||10,080 min||-4°C|