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3 Heavy Duty Aluminum Foil Tape 438 Technical Data Product Description 3M™ Heavy Duty Aluminum Foil Tape 438 has a transparent acrylic adhesive to use when a heavier weight foil is required. Product Construction Backing Adhesive Color Standard Roll Length Aluminum foil Acrylic Shiny silver 60 yds. (55 m) Typical Physical Properties Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. ASTM Test Method Features Adhesion to Steel: 43 oz./in. width (47 N/100 mm) D-3330 Tensile Strength: 59 lbs./in. width (1033 N/100 mm) D-3759 Elongation at Break: 10% D-3759 Backing Thickness: 5.0 mils (0.13 mm) D-3652 Tape Thickness: 7.2 mils (0.18 mm) D-3652 Temperature Use Range: -65° to 300°F (-54° to 149°C) Water Vapor Transmission Rate: 0.1 gms H2O/100 sq. in./24 hrs. (1.55 g/m2/24 hrs.) Weight: 0.0217 lbs./yd./in. width (0.0109 kg/m/24 mm) D-3833 • Flame resistant. Meets U.L. 723, Class “L” low flammability rating (File R 7311). • Meets requirements of F.A.R. 25.853(a). • Foil backing provides an excellent reflective surface for both heat and light. • Aluminum foil backing and acrylic adhesive system combine to offer long aging both indoors and out. • The high coefficient of expansion offered by the aluminum allows expansion and contraction with changes in temperatures, along with thermal conductivity. • Performs in a range from -65° to over 300°F (-54° to 149°C). Higher temperatures for shorter periods of time. 3M™ Heavy Duty Aluminum Foil Tape 438 Application Ideas • Barrier, protector and thermal conductor in appliance (electronics) industry. • Use when customer specification calls for a 5-mil (0.13 mm) foil as a barrier for vinyl coated wires in many applications in appliance industry. • Patch tears in skins of aircraft and truck trailers. Storage Store under normal conditions of 60° to 80°F (16° to 27°C) and 40 to 60% R.H. in the original carton. Shelf Life To obtain best performance, use this product within 24 months from date of manufacture. Product Use All statements, technical information and recommendations contained in this document are based upon tests or experience that 3M believes are reliable. However, many factors beyond 3M’s control can affect the use and performance of a 3M product in a particular application, including the conditions under which the product is used and the time and environmental conditions in which the product is expected to perform. Since these factors are uniquely within the user’s knowledge and control, it is essential that the user evaluate the 3M product to determine whether it is fit for a particular purpose and suitable for the user’s method of application. Warranty and Limited Remedy Unless stated otherwise in 3M’s product literature, packaging inserts or product packaging for individual products, 3M warrants that each 3M product meets the applicable specifications at the time 3M ships the product. Individual products may have additional or different warranties as stated on product literature, package inserts or product packages. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. User is responsible for determining whether the 3M product is fit for a particular purpose and suitable for user’s application. If the 3M product is defective within the warranty period, your exclusive remedy and 3M’s and seller’s sole obligation will be, at 3M’s option, to replace the product or refund the purchase price. Limitation of Liability Except where prohibited by law, 3M and seller will not be liable for any loss or damage arising from the 3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability. ISO 9001: 2000 This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001: 2000 standards. 3 Industrial Business Industrial Adhesives and Tapes Division 3M Center, Building 21-1W-10, 900 Bush Avenue St. Paul, MN 55144-1000 800-362-3550 • 877-369-2923 (fax) www.3M.com/industrial Recycled Paper 40% pre-consumer 10% post-consumer Printed in U.S.A. ©3M 70-0709-5015-2 (2001 / 7/05)