3M VHB Tape 4618

3M VHB Tape 4618 Datasheet
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  • Description for 3M VHB Tape 4618

    A tape fastener and are ideal for use in many interior and exterior bonding applications. In many situations, they can replace rivets, spot welds, liquid adhesives and other permanent fasteners.

    *See Terms of Use Below

    Application Type Bond
    Material Form Tape
    Substrate Glass, Metal, High surface energy plastics, Plastics, Stainless Steel, Aluminum, Copper
    Industry Many exterior bonding applications, General purpose, Rivets
    Manufacturer 3M
    Chemistry Acrylic
    Cure Method Pressure Sensitive
    Cure Temperature (°C) 20 to 25 Room temperature, 20 to 25 Room temperature, 20 to 25 Room temperature
    Cure Time (min) >20, >1,440, >4,320
    Color White, Green
    Relative Solvent Resistance Chemical Resistance: Excellent solvent resistance
    High Temperature Resistance (°C) 93, 121
    Other Resistance Resistance to plasticizer migration
    Durability Outstanding durability
    Density (g/cm³) 0.721
    Key Specifications UL746C recognition
    Tape Backing/Carrier Acrylic Foam

  • Technical Data for 3M VHB Tape 4618

    *See Terms of Use Below

    Overview
    • Application Type
    • Material Form
      • Tape
    • Substrate
    • Industry
      • Rivet - Rivets
      • Industrial - Many interior bonding applications, Other permanent fasteners, Spot welds
      • Industrial Exterior - Many exterior bonding applications
      • General Purpose
      • Other - Multi purpose
    • Chemistry
    • Application Method
      • Roll - Roller
      • 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
    Cure Temperature (°C) 20 to 25 Room temperature, 20 to 25 Room temperature, 20 to 25 Room temperature Test Method
    Cure Time (min) >20, >1,440, >4,320 Test Method
    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
    Double Sided Double sided
    Material Resistance
    High Temperature Resistance (°C) 93, 121
    Moisture/Humidity Resistance Excellent moisture resistance
    Other Resistance Resistance to plasticizer migration
    Hardness
    Durability Outstanding durability
    Flexibility Flexible
    Other Properties
    Coefficient of Thermal Expansion (CTE) 1e-4 (in/in/°F), 1.8e-4(mm/mm/°C)
    Density (g/cm³) 0.721
    Business Information
    Shelf Life Details All 3M™ VHB™ Tapes have a shelf life of 24 months from date of manufacture 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 VHB Tape 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

      Bond strength is dependent upon the amount of adhesive-to-surface contact developed. Firm application pressure develops better adhesive contact and helps improve bond strength. Typically, good surface contact can be attained by applying enough pressure to insure that the tape experiences approximately 15 psi (100 kPa) pressure. Either roller or platen pressure can be used. Note that rigid surfaces may require 2 or 3 times that much pressure to make the tape experience 15 psi.

      Ideal application temperature range is 70°F to 100°F (21°C to 38°C).Pressure sensitive adhesives use viscous flow to achieve substrate contact area. Minimum suggested application temperatures: 50°F (10°C): 3M™ VHB™ Tapes 4950, 4910, 4611, 4622 families.

      60°F (15°C): 3M™ VHB™ Tape 4945family.

      32°F (0°C): 3M™ VHB™ Tape LSE or 4951 family (Note: Surface must be frost free).

      Note: 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. Abrasion is not suggested with 3M™ VHB™ Tapes 4932 and 4952.

      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 VHB Tape 4618

    *See Terms of Use Below

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Cure Time Test Methods
Cure Time Test Method
>20 min Approximately 50% of ultimate bond strength
>1,440 min 90%
>4,320 min 100%
Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
20 to 25°C Room temperature Approximately 50% of ultimate bond strength
20 to 25°C Room temperature 90%
20 to 25°C Room temperature 100%
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 Adhesion 4,320 min Stainless steel 20 to 25°C Room temperature Based onASTM D3330 -Tostainless steel,room temperature, jaw speed 12 in/min (304.8 mm/min).Average force to remove is measured. 72 hour dwell.