3M Lead Foil Tape 421

3M Lead Foil Tape 421 Datasheet
  • Description for 3M Lead Foil Tape 421

    Backed with a rubber adhesive, offering excellent conformability in a variety of application conditions, very good conformability.

    *See Terms of Use Below

    Application Type Bond, Masking
    Material Form Tape
    Substrate Steel
    Industry Electroplating
    Manufacturer 3M
    Chemistry Rubber
    Cure Method Pressure Sensitive
    Color Dark silver
    High Temperature Resistance (°C) 107
    Low Temperature Resistance (°C) -51
  • Technical Data for 3M Lead Foil Tape 421

    • Application Type
    • Material Form
      • Tape
    • Substrate
    • Industry
      • Sporting Equipment - Add weight (balance) to equipment parts (golf clubs, tennis rackets, etc.)
      • Electronics - Electroplating
      • Industrial
      • Medical - X-ray plate masking
      • Other - Excellent conformability in a variety of application conditions, Radiation barrier, Moisture barrier, Chemical milling, Maskant during paint stripping
    • Chemistry
      • Other - Rubber
    • Cure Method
      • Pressure Sensitive (min) - Pressure Sensitive
    • Color
      • Gray - Dark silver
    Cure Specs
    Application Temperature (°F) >32
    Bond Strength
    General Bond Strength (psi) 31 (oz./in.), 45 (oz./in.) Test Method
    Peel Strength (piw) 4.9 (N/cm) Test Method
    Tensile Strength (psi) 26.3 (N/cm) Test Method
    Tape Properties
    Total Thickness (mil) 7
    Single Sided Single Sided
    Material Resistance
    High Temperature Resistance (°C) 107
    Low Temperature Resistance (°C) -51
    Electrical Conductivity (mhos/cm) Electrically conductive
    Thermal Conductivity (W/m°K) Thermally conductive, Good thermal properties
    Elongation (%) 14 Test Method
    Flexibility Very good conformability, Excellent conformability
    Business Information
    Shelf Life Details Store under normal conditions of 60° to 80°F (16° to 27°C) and 40 to 60% R.H. in the original carton. To obtain best performance, use this product within 18 months from date of manufacture.
    Shelf Life Temperature (°F) 60 to 80
    Shelf Life Type From date of manufacture
    Shelf Life (mon) 18
  • Best Practices for 3M Lead Foil Tape 421

    *See Terms of Use Below

    1. Surface Preparation

      Best results are obtained when applied to a clean dry surface above 32°F (0°C). Also, by “feathering” the edges – rubbing the tape down with a smooth-edged plastic piece (or similar object) – the tape can be made to better conform to the substrate. This is especially important if the tape is to be used as a “thief” in electroplating where the edges must fully contact the metal base.

  • Comparable Materials for 3M Lead Foil Tape 421

    *See Terms of Use Below

    Spec Engine® Results

Questions about this material?

Get personal assistance with your specific application needs.

Your Profile Edit
  1. bf1b4683-762d-4c5e-ad32-6d526d2e2791
  2. bf1b4683-762d-4c5e-ad32-6d526d2e2791

Popular Articles

Infographic: ENSURING A STRONG BOND - 6 Basic Methods of Surface Preparation

Read Article

Electrically Conductive Adhesives

Read Article

Anaerobic Adhesives

Read Article

Testing the effectiveness of surface treatments

Read Article

Sponsored Articles

Unique Advantages of Contact Adhesives

Read Article

Using LOCTITE® 454™ is a Valid Option for Engineers Working with a Wide Variety of Materials

Read Article

Sylgard 184 by DOW is the Top Choice for a Transparent, Silicone Encapsulant. Read Why:

Read Article

Case Study: Creating reliable, corrosion-free bonds with LORD® 406 acrylic adhesive

Read Article
Information provided by Gluespec

Why Register?

  • View Technical Details
  • View Test Methods
  • View Key Specifications
  • View Similar Materials
  • Save your Project Searches

Already registered? Sign in.

Questions? Learn more about Gluespec

Gluespec Poll

Which answer best describes a project you are currently working on?
Tensile Strength Test Methods
Tensile Strength Test Method
26.3 (N/cm) ASTM D3759
General Bond Strength Test Methods
General Bond Strength Substrate Test Method
31 (oz./in.) Steel ASTM D-3330, width
45 (oz./in.) Steel ASTM D-3330, width
Peel Strength Test Methods
Peel Strength Type Test Method
4.9 (N/cm) 180° Peel Adhesion ASTM D3330, c12 in/min (300 mm/min)
Elongation Test Methods
Elongation Test Method
14 % At Break, ASTM D3759