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3M™ Scotch-Weld™ Metal Primer EC-3901

Part Number EC-39013M Product Number EC-39013M ID 87330000313
    • Improves adhesion to glass and metal
    • Increases resistance to environmental exposure with epoxy and urethane structural adhesives
    • Protects cleaned surfaces until bonding operations can be completed
    • Offers improved corrosion protection to metal for long-lasting performance
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    Specifications
    Attribute Name
    Value
    Brand
    Scotch-Weld™
    Product Type
    Primer
    Product Details
    • Improves adhesion to glass and metal
    • Increases resistance to environmental exposure with epoxy and urethane structural adhesives
    • Protects cleaned surfaces until bonding operations can be completed
    • Offers improved corrosion protection to metal for long-lasting performance
    • Ensures complete wetting of adhesive to adherend surfaces
    • Applies easily and dries quickly

    3M™ Scotch-Weld™ Metal Primer EC-3901 is used for improved metal and glass adhesion or resistance to environmental exposure with epoxy and urethane structural adhesives. EC-3901 ensures complete wetting of adhesive to adherend surfaces. This primer can simplify production scheduling by protecting the cleaned surfaces until the bonding operations can be completed.

    Underside or belly of commercial aircraft
    A primer for Scotch-Weld™ film and liquid adhesives where it is desired to obtain improved metal and glass adhesion
    Improves Adhesion to Glass and Metal
    3M™ Scotch-Weld™ Metal Primer EC-3901 is a one-component metal and glass primer designed for applications using 3M™ Scotch-Weld™ film and liquid structural adhesives. Formulated to improve adhesion to metal and glass, this primer simplifies production scheduling by protecting the cleaned surfaces until the bonding operations can be completed. EC-3901 also offers resistance to environmental exposure, as well as metal corrosion protection. 3M™ Scotch-Weld™ Metal Primer EC-3901 features low viscosity for ease-of-application and ensures complete wetting of the adhesive to adherend surfaces, providing an ideal application surface.

    The Primer Advantage
    3M™ Scotch-Weld™ Metal Primer EC-3901 helps protect metal surfaces against corrosion. Let our unparalleled technical service and support show you how this surface treatment can make a difference to your primer line. EC-3901 also offers these benefits:
    • Ensures that surfaces remain relatively free of oxidation until the bonding application is completed
    • Applies easily by spraying or brushing
    • Can be used on various metal substrates

    Primed for Take-Off
    In general, 3M Scotch-Weld™ primers complement the Scotch Weld™ Structural Adhesives portfolio and can be used to protect prepared substrates to be bonded. They facilitate "wet-out" of the primary adhesive agent to facilitate the bond between substrate and coating extrudate, and then are cured to enhance chemical resistance. Our primers help prepare the surfaces for the bonding agents and improve the conditions so that stronger, longer lasting bonds are created.

    The following data shows data using EC-3901 on various metal substrates:
    Adherend Adhesive Overlap Shows Strength at
    -67°F (-55°C) 75°F (24°C) 180°F (82°C)
    50 MIL
    6-4 Titanium Alloy
    AF-126
    0.06 wt.
    6380 psi 5280 psi 3650 ps
    50 MIL
    7-7 Stainless Stee
    AF-126
    0.06 wt.
    10203 psi 6310 psi 3600 ps


    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 3M executes its 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. The 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 its products, 3M has a history of saving money by reducing waste, rework and time.

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