3M™ Scotch-Weld™ Epoxy Adhesive 7240

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Utilizes a high-performance, two-part toughened epoxy

Delivers both high shear and peel strength and outstanding levels of durability

Non-sag formula helps ensure easy application to vertical surfaces

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Details

Highlights
  • Utilizes a high-performance, two-part toughened epoxy
  • Delivers both high shear and peel strength and outstanding levels of durability
  • Non-sag formula helps ensure easy application to vertical surfaces
  • Long open time for large area applications
  • Flame retardant formulation
  • Ideal for a variety of industries, including general industrial, metalworking, transportation, and aerospace

3M™ Scotch-Weld™ Epoxy Adhesive 7240FR is a high-performance, non-sag, two-part toughened formula designed for reliable adhesion. Delivering both high shear and peel strength and outstanding levels of durability, this product excells in a wide range of industries, including general industrial, metalworking, transportation, and aerospace. In addition to these performance features, 3M™ Scotch-Weld™ Epoxy Adhesive 7240FR contains glass beads for accurate glue line control, making it an ideal choice for elevating your adhesion processes.

Formulated to Create Rigid Bonds for Reliable Adhesion
3M™ Scotch-Weld™ Epoxy Adhesive 7240 is a high performance, two-part toughened adhesive that offers high shear and peel adhesion and outstanding levels of durability. This 2:1 mix ratio epoxy has a 45 minute work life, allowing time for adjustments and positioning of substrates and parts. It reaches handling strength in approximately 6 hours. Once cured this adhesive provides a durable bond with high shear strength to deliver better dead load holding. This product can be used in a wide range of industries including: general industrial, metalworking, transportation and aerospace. 3M™ Scotch-Weld™ Epoxy Adhesive 7240 contains glass beads to aid in accurate glue line control.

Recommended Applications

  • Rail for stainless steel aluminum and fiberglass

Understanding Epoxy Adhesives
Epoxy adhesives are part of the class of adhesives called "structural adhesives," which also includes polyurethane, acrylic, cyanoacrylate and others. Epoxies are formulated as liquid reactive polymers that undergo a chemical reaction when mixed and then cure to form a solid plastic material. Once the two parts are mixed in their specified ratio, they begin the curing process and offer a limited working time where the adhesive can be applied and the two surfaces positioned as needed. This work life lasts anywhere from a few minutes to several hours. These structural adhesives provide high shear and peel strengths, depending on the formula, and better heat and chemical resistance than other common adhesives. In general, epoxy adhesives have the highest overall strength and offer the best performance and most resistance to high temperatures, solvents and outdoor weathering.

Epoxy adhesives are widely used in building and home construction; aircraft and automobile manufacturing; bicycle, boat, golf clubs, ski and snowboard assembly as well as a host of home use and other applications. They are used virtually anywhere high-strength bonds are needed along with resistance to environmental conditions. These adhesives are popular for their ease of use, mechanical strength and chemical resistance. Formulations can be created to make epoxies flexible or rigid, transparent or opaque, quick setting or slow setting. The versatility with which epoxy adhesives can be formulated helps meet almost any requirement for bonding wood, metal, glass, stone and various plastics.

Find More Bonding and Assembly Solutions (PDF, 20.14 Mb)

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Typical properties

Accelerator Color

Off-white

Adhesive Type

Epoxy

Application

Impact Resistance, Encapsulating, Potting, Bonding, Sealing, Flame Retardant

Base Color

Black

Brands

Scotch-Weld™

Container Size (Imperial)

13.52 fl oz, 57.06 qt

Container Size (Metric)

54 mL, 400 L

Cure Rate

48 hr

Design Challenges

Impact & Shock Absorption, Noise Vibration & Harshness Control NVH

Full Cure Time

48 hr

Indoor/Outdoor

Indoor/Outdoor

Mix Ratio Volume Base:Accelerator

2:1

Mixed Color

Black

Open Time

45 min

Performance Level

Best

Physical Form

Liquid

Set Time

45 min

Shelf Life

36 Month

Smallest Saleable Unit

Kit

Time to Handling Strength

6 hr

Work Life

45 min

Resources

Safety Data Sheets

Document Number: MSDS_3597556_US_EN

(PDF)

For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use.  Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice.  Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage.  For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.