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December, 2009 3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A Product Description 3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A is a gray, aluminum lled, two-part, room temperature curing structural adhesive. Product Features
- Excellent adhesion to metals
- Good void lling properties
- Ideal for repairing holes, dents and cracks in metal
3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A Technical Information Note The following technical information and data should be considered representative or typical only and should not be used for specication purposes. Typical Uncured Physical Properties Property Values Notes Base Color Gray Accelerator Color Amber Base Viscosity 145 s Time to deliver 20 gms@ 50 psi thru a 0.104in orice Accelerator Viscosity 125 s Time to deliver 20 gms@ 50 psi thru a 0.10in orice Base Resin Modied Epoxy Accelerator Resin Modied Epoxy Base Net Weight 10.8 lb/gal Accelerator Net Weight 7.9 lb/gal Mix Ratio by Volume (B:A) 3:2 Mix Ratio by Weight (B:A) 2:1 Typical Mixed Physical Properties Property Values Test Condition Worklife, 100g mixed 45 min Room Temperature Time to Handling Strength 8 to 12 h Room Temperature Time to Full Cure 7 day Room Temperature
3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A Typical Physical Properties Color: Gray Conditions Attribute Modier: Cured Typical Cured Characteristics Shore D Hardness: 77 Conditions Dwell/Cure Time: 60 min @ Room Temperature Methods ASTM D2240 Typical Performance Characteristics PropertyValuesMethod Dwell/Cure Time Dwell Time Units Temp C Temp F Environmental ConditionSubstrate Substrate Notes Surface PreparationNotes Overlap Shear Strength 2400 lb/in² ASTM D1002 7 days 23C 73F 52%RHSteel 0.005in bondline Solvent Wipe All aluminum data were developed on .063- inch thick 2024 T-3 clad aluminum and all steel data on .035-inch cold rolled steel. Test specimens were 1/2-inch overlap, 1- inch wide, pulled at a testing rate of .1- inch/min. Peel Adhesion lb/in width ASTM D1876 7 day 23C 73F FPL Etched Aluminum 2 psi applied during dwell Peel Adhesion lb/in width ASTM D1876 7 day 23C 73F Steel Solvent Wipe 2 psi applied during dwell
3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A Handling/Application Information Directions for Use 1. For high strength structural bonds, paint, oxide lms, oils, dust, mold release agents and all other surface contaminants must be completely removed. The amount of surface preparation depends on the required bond strength and the environmental aging resistance desired by user. See surface preparation section. 2. Use gloves to minimize skin contact with adhesive. 3. This product consists of two parts. Mix thoroughly by weight or volume in the proportions specied in the Uncured Properties Section. Mix approximately 15 seconds after a uniform color is obtained. 4. For maximum bond strength, apply product evenly to both surfaces to be joined. 5. Application to the substrates should be made within 45 minutes. Large quantities and/or higher temperatures will reduce this working time. 6. Join the adhesive coated surfaces and allow to cure at 60°F (16°C) or above until rm. Up to 200°F (93°C), will speed curing. 7. The following times and temperatures will result in a full cure: Cure Temperature Time 75°F (24°C) 7 days 150°F (67°C) 120 minutes 200°F (93°C) 30 minutes 8. Keep parts from moving until handling strength is reached. Contact pressure is necessary. Maximum shear strength is obtained with a 3-5 mil bond line. 9. Excess uncured adhesive can be cleaned up with ketone type solvents.* Adhesive coverage: A 0.005 in thick bondline will yield a coverage of 320 sqft/gallon. *Note: When using solvents, extinguish all ignition sources and follow manufacturer’s precautions and directions for use.
3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A Handling/Application Information (continued) Surface Preparation For high strength structural bonds, paint, oxide lms, oils, dust, mold release agents and all other surface contaminants must be completely removed. The amount of surface preparation depends on the required bond strength and the environmental aging resistance desired by user. The following cleaning methods are suggested for these common surfaces: Steel: 1. Wipe free of dust with oil-free solvent such as acetone, isopropyl or alcohol solvents.* 2. Sandblast or abrade using clean ne grit abrasives. 3. Wipe again with solvent to remove loose particles. 4. If a primer is used, it should be applied within 4 hours after surface preparation. *Note: Read and follow component supplier’s environmental, health and safety recommendations prior to preparing this etch solution. Aluminum: 1. Vapor Degrease: Perchloroethylene condensing vapors for 5-10 minutes.* 2. Alkaline Degrease: Oakite 164 solution (9-11 oz./gallon water) at 190°F ± 10°F (88°C ± 5°C) for 10-20 minutes. Rinse immediately in large quantities of cold running water. 3. Acid Etch: Place panels in the following solution for 10 minutes at 150°F ± 5°F (66°C ± 3°C). Sodium Dichromate 4.1-4.9 oz./gallon Sulfuric Acid, 66°Be 38.5-41.5 oz./gallon 2024-T3 aluminum (dissolved) 0.2 oz./gallon minimum Tap Water as needed to balance 4. Rinse: Rinse panels in clean running tap water. 5. Dry: Air dry 15 minutes; force dry 10 minutes at 190°F (88°C) ± 10°F (5°C). 6. If primer is to be used, it should be applied within 4 hours after surface preparation. Plastics/Rubber 1. Wipe with isopropyl alcohol.* 2. Abrade using ne grit abrasives. 3. Wipe again with isopropyl alcohol.* Glass 1. Solvent wipe surface using acetone or methyl ethyl ketone (MEK).* 2. Apply a thin coating (0.0001 in. or less) of primer such as 3M™ Scotch-Weld™ Structural Adhesive Primer EC- 3901 to the glass surfaces to be bonded and allow the primer to dry before bonding. *Note: When using solvents, extinguish all ignition sources and follow manufacturer’s precautions and directions for use Storage and Shelf Life Store products at 60-80°F (15-27°C) for maximum storage life. Rotate stock on a “rst in-rst out” basis. 3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A has a storage life of 24 months from date of manufacture in unopened containers.
3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A Trademarks 3M and Scotch-Weld are trademarks of 3M Company. References Property Values 3m.com Product Page https://www.3m.com/3M/en_US/company-us/all- 3m-products/~/3M-Scotch-Weld-Epoxy-Adhesive- 1751?N=5002385+3293242441&rt=rud Safety Data Sheet (SDS) https://www.3m.com/3M/en_US/company-us/SDS- search/results/? gsaAction=msdsSRA&msdsLocale=en_US&co=ptn&q=1751 B/A This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001 standards. Refer to Product Label and Material Safety Data Sheet for health and safety information before using this product. For additional health and safety information, call 1-800-364-3577 or (651) 737-6501.
3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A Information Technical Information: The technical information, guidance, and other statements contained in this document or otherwise provided by 3M are based upon records, tests, or experience that 3M believes to be reliable, but the accuracy, completeness, and representative nature of such information is not guaranteed. Such information is intended for people with knowledge and technical skills sucient to assess and apply their own informed judgment to the information. No license under any 3M or third party intellectual property rights is granted or implied with this information. Product Selection and Use: Many factors beyond 3M’s control and uniquely within user’s knowledge and control can aect the use and performance of a 3M product in a particular application. As a result, customer is solely responsible for evaluating the product and determining whether it is appropriate and suitable for customer’s application, including conducting a workplace hazard assessment and reviewing all applicable regulations and standards (e.g., OSHA, ANSI, etc.). Failure to properly evaluate, select, and use a 3M product and appropriate safety products, or to meet all applicable safety regulations, may result in injury, sickness, death, and/or harm to property. Warranty, Limited Remedy, and Disclaimer: Unless a dierent warranty is specically stated on the applicable 3M product packaging or product literature (in which case such warranty governs), 3M warrants that each 3M product meets the applicable 3M product specication at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR ARISING OUT OF A COURSE OF DEALING, CUSTOM, OR USAGE OF TRADE. If a 3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M’s option, replacement of the 3M product or refund of the purchase price. Limitation of Liability: Except for the limited remedy stated above, and except to the extent prohibited by law, 3M will not be liable for any loss or damage arising from or related to the 3M product, whether direct, indirect, special, incidental, or consequential (including, but not limited to, lost prots or business opportunity), regardless of the legal or equitable theory asserted, including, but not limited to, warranty, contract, negligence, or strict liability.
3M™ Scotch-Weld™ Epoxy Adhesive 1751 B/A 3M United States 3M Center St. Paul, MN 55144-1000 800-362-3550 www.3M.com Please recycle. © 3M 2021. All Rights Reserved. The brands listed above are trademarks of 3M