3M™ Heavy Duty Aluminum Foil Tape 438

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Heavy duty dead soft aluminum foil backing provides increased effectiveness for head shielding in demanding applications

Highly engineered acrylic adhesive provides long term durability, but removes cleanly after harsh masking applications

Withstands exposure to flame, weathering, moisture and UV

Overall Width (Imperial)

Overall Width (Metric)

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Details

Highlights

Heavy duty dead soft aluminum foil backing provides increased effectiveness for head shielding in demanding applications
Highly engineered acrylic adhesive provides long term durability, but removes cleanly after harsh masking applications
Withstands exposure to flame, weathering, moisture and UV
Heat and light reflective tape protects surfaces and enhances lighting efficiency
Recognized by UL to UL 746C and Classified by UL to UL 723, Class "L" for low flammability rating

3M™ Heavy Duty Aluminum Foil Tape 438 is a high-performance foil tape designed for numerous applications across a broad range of industries. Comprised of a dead soft aluminum foil backing with a highly engineered pressure sensitive acrylic adhesive, it is ideal for heat shielding, heat reflecting, seaming and sealing.

Withstands Exposure to High Heat and Humidity
Consisting of a dead soft, thermally conductive aluminum backing, 3M™ Heavy Duty Aluminum Foil Tape 438 (PDF, 78.14 Kb) dissipates heat over the surface of the tape to reduce hot spots and protect the substrate from the effects of high temperatures. Coated with our highly engineered acrylic adhesive, it is capable of withstanding exposure to high heat and humidity while maintaining a strong and reliable bond. This tape can withstand a variety of moisture, weathering, UV and solvents in order to provide an excellent work life, indoors or out.

3M™ Aluminum Foil Tape 438 is UL Recognized to UL 746C (File E 122798) and Classified by UL to UL 723 "L" for low flammability rating (File R 7311). It meets F.A.R 25.853(a). Temperature use range is from -65° to 300°F (-54° to 149°C).

Recommended Applications

Heat shielding of delicate parts
Heat reflecting
Moisture barrier
Seaming and sealing
Refrigerator and freezer coil attachment
Plastic protection against heat and UV exposure

Typical properties

Details

Adhesive Type	Acrylic
Back Side Adhesive Thickness (Metric)	0.13 mm
Backing (Carrier) Thickness (Imperial)	5 mil
Backing (Carrier) Thickness (Metric)	0.13 mm
Backing Material	Aluminum Foil
Brands	3M™
Elongation at Break	10.0 %
Industries	Aerospace, Automotive, Electronics, Specialty Vehicle, Military & Government, Metalworking, Transportation, Appliance, Construction, General Industrial
Maximum Operating Temperature (Celsius)	149 ℃
Maximum Operating Temperature (Fahrenheit)	300 ℉
Minimum Operating Temperature (Celsius)	-54 ℃
Minimum Operating Temperature (Fahrenheit)	-65 ℉
Product Color	Silver
Shelf Life	24 Month
Smallest Saleable Unit	Roll
Tensile Strength (Imperial)	59.0 lb/in
Tensile Strength (Metric)	103 N/100mm, 1033 N/100mm
Total Tape Thickness without Liner (Imperial)	7.2 mil
Total Tape Thickness without Liner (Metric)	0.18 mm

Dimensions and Classifications

Overall Length (Imperial)	60 yd
Overall Length (Metric)	54.8 m, 54.86 m
Overall Width (Imperial)	1 in, 2 in, 2.5 in, 3 in, 4 in, 6 in, 48 in
Overall Width (Metric)	25.4 mm, 50.7 mm, 63.5 mm, 76.2 mm, 101.6 mm, 152.4 mm, 1219.2 mm

Resources

3M™ Heavy Duty Aluminum Foil Tape 438

Other

(PDF, 99KB)

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	Current product 3M™ Heavy Duty Aluminum Foil Tape 438	3M™ Aluminum Foil Tape 427	3M™ Aluminum Foil Tape 425	3M™ Aluminum Foil Tape 431
Backing (Carrier) Thickness (Imperial)	5 mil
Overall Width (Metric)	25.4 mm, 50.7 mm, 63.5 mm, 76.2 mm, 101.6 mm, 152.4 mm, 1,219.2 mm
Overall Width (Imperial)	1 in, 2 in, 2.5 in, 3 in, 4 in, 6 in, 48 in
Backing (Carrier) Thickness (Metric)	0.13 mm
Adhesive Type	Acrylic

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.