• Description for 3M 4618

    Ideal for use in many interior and exterior bonding applications., Excellent durability and excellent solvent and moisture resistance.

    *See Terms of Use Below

    Application Type Bond
    1 Part or 2 Part 1 Part
    Material Form Tape
    Substrate Glass, Metal, High surface energy plastics, Stainless Steel, Aluminum
    Industry Many exterior bonding applications, General purpose
    Manufacturer 3M
    Chemistry Acrylic
    Cure Method Pressure Sensitive
    Color White, Green
    Relative Solvent Resistance Chemical Resistance: Excellent solvent resistance
    High Temperature Resistance (°C) 93, 121
    Other Resistance Plasticizer migration resistance
    Density (g/cm³) 0.720
    Key Specifications UL746C recognition
    Tape Backing/Carrier Acrylic Foam
  • Technical Data for 3M 4618

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Tape
    • Substrate
    • Industry
      • Industrial - Many interior bonding applications
      • Industrial Exterior - Many exterior bonding applications
      • General Purpose
      • Other - Multi purpose
    • Chemistry
    • Application Method
      • Roll
      • Other - platen pressure
    • Cure Method
      • Pressure Sensitive (min) - Pressure Sensitive
    • Color
      • Green
      • White
    • Key Specifications
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - UL746C recognition
    • Tape Backing/Carrier
      • Acrylic Foam
    Specifications
    Cure Specs
    Application Temperature (°F) 70 to 100
    Bond Strength
    General Bond Strength (psi) High
    Peel Strength (piw) High, 17 (lb/in) Test Method
    Shear Strength (psi) High, 80, 1000 (grams), 250 (grams), 250 (grams) Test Method
    Tensile Strength (psi) High, 85 Test Method
    Tape Properties
    Total Thickness (mil) 25
    Material Resistance
    High Temperature Resistance (°C) 93, 121
    Moisture/Humidity Resistance Excellent moisture resistance
    Other Resistance Plasticizer migration resistance
    Hardness
    Flexibility Flexible
    Other Properties
    Coefficient of Thermal Expansion (CTE) 1e-4 (in/in/°F), 1.8e-4(mm/mm/°C)
    Density (g/cm³) 0.720
    Business Information
    Shelf Life Details All 3M™ VHB™ Tapes have a shelf life of 24 months from date of shipment when stored at 40°F to 100°F (4°C to 38°C) and 0-95% relative humidity. The optimum storage conditions are 72°F (22°C) and 50% relative humidity.
    Shelf Life Temperature (°F) 40 to 100
    Shelf Life Type From date of shipment
    Shelf Life (mon) 24
  • Best Practices for 3M 4618

    *See Terms of Use Below

    1. Surface Preparation

      To obtain good performance with all 3M™ VHB™ Tapes, it is important to ensure that the surfaces are dry and free of condensed moisture.

    2. Application

      Initial tape application to surfaces at temperatures below these suggested minimums is not recommended because the adhesive becomes too firm to adhere readily. However, once properly applied, low temperature holding is generally satisfactory.

    3. Clean-Up

      Most substrates are best prepared by cleaning with a 50:50 mixture of isopropyl alcohol (IPA) and water prior to applying 3M™ VHB™ Tapes.

      Exceptions to the general procedure that may require additional surface preparation include: Heavy Oils: A degreaser or solvent-based cleaner may be required to remove heavy oil or grease from a surface and should be followed by cleaning with IPA/water.

      Abrasion: Abrading a surface, followed by cleaning with IPA/water, can remove heavy dirt or oxidation and can increase surface area to improve adhesion.

      Adhesion Promoters: Priming a surface can significantly improve initial and ultimate adhesion to many materials such as plastics and paints.

      Porous surfaces: Most porous and fibered materials such as wood, particleboard, concrete, etc. need to be sealed to provide a unified surface.

      Unique Materials: Special surface preparation may be needed for glass and glass-like materials, copper and copper containing metals, and plastics or rubber that contain components that migrate (e.g. plasticizers).

      Note: These cleaner solutions contain greater than 250 g/l of volatile organic compounds (VOC). Please consult your local Air Quality Regulations to be sure the cleaner is compliant. When using solvents, be sure to follow the manufacturer’s precautions and directions for use when handling such materials.

  • Comparable Materials for 3M 4618

    *See Terms of Use Below

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Shear Strength Test Methods
Shear Strength Type Cure Time Substrate Test Time Test Temperature Test Method
High
80 psi Dynamic overlap shear strength 4,320 min stainless steel 20 to 25°C ASTM D-1002 - To stainless steel, room temperature, 1 in2 (6.45 cm2), jaw speed 0.5 in/min (12.7 mm/min.) Peak force to separate is measured. 72 hour dwell.
1000 (grams) Static shear strength stainless steel 600,000 sec 22°C ASTM D3654 - To stainless steel, tested at various temperatures and gram loadings. 0.5 in2 (3.22 cm2). Will hold listed weight for 10,000 minutes (approximately 7 days). Conversion: 1500 g/0.5 in2 equals 6.6 lb/in2; 500 g/0.5 in2 = 2.2 lb/in2.
250 (grams) Static shear strength stainless steel 600,000 sec 66°C ASTM D3654 - To stainless steel, tested at various temperatures and gram loadings. 0.5 in2 (3.22 cm2). Will hold listed weight for 10,000 minutes (approximately 7 days). Conversion: 1500 g/0.5 in2 equals 6.6 lb/in2; 500 g/0.5 in2 = 2.2 lb/in2.
250 (grams) Static shear strength stainless steel 600,000 sec 93°C ASTM D3654 - To stainless steel, tested at various temperatures and gram loadings. 0.5 in2 (3.22 cm2). Will hold listed weight for 10,000 minutes (approximately 7 days). Conversion: 1500 g/0.5 in2 equals 6.6 lb/in2; 500 g/0.5 in2 = 2.2 lb/in2.
Tensile Strength Test Methods
Tensile Strength Cure Time Substrate Test Temperature Test Method
High
85 psi 4,320 min Aluminum 20 to 25°C (T-Block Tensile) - ASTM D-897 - To aluminum, room temperature, 1 in2 (6.45 cm2), jaw speed 2 in/min (50 mm/min.) Peak force to separate is measured. 72 hour dwell.
Peel Strength Test Methods
Peel Strength Type Cure Time Substrate Test Temperature Test Method
High
17 (lb/in) 90° Peel Strength 4,320 min stainless steel 20 to 25°C Based on ASTM D3330 -To stainless steel, room temperature, jaw speed 12 in/min (305 mm/min). Average force to remove is measured. 72 hour dwell.