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  • 3M ID 7000048590
  • UPC 00021200646782


We developed 3M™ Scotch-Weld™ Structural Adhesive EC-1838 B/A as a two-part, 75°F curing adhesive for bonding polyester and metal panels to themselves and each other. This durable adhesive provides a high shear strength and excellent environmental resistance.

3M Scotch-Weld; Structural Adhesive EC-1838 B/A provides good shear and peel strength along with good impact resistance for reliability and durability. Its 60 minute work life provides ample time for adjusting parts for precise fit. This unique epoxy adhesive can be used to replace mechanical fasteners, screws, rivets, spot welds, and is an ideal formula for polyester and metal surfaces. EC-1838 B/A starts as a high viscosity paste for easy, controlled dispensing that won't drip, sag or migrate when applied on vertical or overhead surfaces. It can be applied with a spatula, trowel or automated dispensing equipment. Flow characteristics are good, and suitable two-part mixing and metering equipment is also available for high volume application. What Are Epoxy Adhesives? 3M epoxy adhesives are part of the class of adhesives called "structural adhesives," which also includes polyurethane and acrylic adhesives. Epoxy adhesives are typically formulated with reactive components (Base and Accelerator) that cure when mixed to form a solid plastic material. 3M provides epoxy adhesives in multiple formats to support your processing needs. Two Part In this format the Base and Accelerator are stored separately which enables the adhesive to have a long shelf life even when stored at room temperature. These materials are available in a duo-pak cartridges for use with the 3M™ EPX™ Applicator System, enabling you to simultaneously meter, mix and apply two-part adhesives. For larger scale operations, you can purchase these in bulk. Because these parts are mixed at point of use, you can reduce waste by saving non-mixed unused material for a later job. One Part In this format, we do the mixing for you and ship it frozen. You store it in a freezer, then remove and thaw it when you’re ready to use it. Adhesive Films In this one-part format, we not only do the mixing for you, but we also turn it into a film that can be specifically cut to size and placed into your bond line. We offer a variety of films in different weights/thickness and supports. These films must be stored frozen. In a two-part epoxy adhesive, 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. Similarly, in a one-part adhesive there is a limited out time after which material is thawed during which it must be used. This work life or out time lasts anywhere from a few minutes to 48 hours or longer. In general, epoxy adhesives provide high shear and peel strengths and have good environmental resistance. These adhesives are preferred for their ease of use, mechanical strength and chemical resistance. Depending on the formulation, epoxy adhesives can be flexible or rigid, transparent or opaque, quick setting or slow setting, high flow or low flow, room temperature or elevated temperature cure. Epoxy adhesives are among the strongest adhesives available, making them well-suited for jobs requiring strength and durability. Our Best for Your Best 3M is proud to partner with organizations across the spectrum of aerospace and related industries. Enabling efficiencies, reducing process times and lowering aircraft weight is how we execute our never-ending mission to offer best-in-class adhesives, sealants, surface protection products and composite resins that effectively reduce costs on multiple fronts. Professionals across the industry know the numerous advantages of 3M Aerospace. Our brand is widely recognized for the highest standards of quality and performance, adding value to the final results. By engineering reliability, longevity and value into all of our products, we have a history of saving money by reducing waste, rework and time.


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