

-
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.Chemical Resistance Chemical Resistance: Excellent solvent resistance, Chemical Resistance: Resistance to plasticizer migration Application Type Bond Material Form Tape Substrate Aluminum, Copper, Glass, Metal, High surface energy plastics, Plastics, Stainless Steel Industry General purpose, Many exterior bonding applications, 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 Green, White Total Thickness (mm) 0.635 High Temperature Resistance (°C) 93, 121 Durability Outstanding durability Density (g/cm³) 0.721 Key Specifications UL746C recognition Tape Backing/Carrier Acrylic Foam -
Technical Data for 3M VHB Tape 4618
Overview
-
Chemical Resistance
- Chemical Resistance: Relative Solvent Resistance - Excellent solvent resistance
- Chemical Resistance: Plasticizer Resistance - Resistance to plasticizer migration
-
Application Type
- Adhesive - Bond
-
Material Form
- Tape
-
Industry
- Rivet - Rivets
- Industrial - Many interior bonding applications, Other permanent fasteners, Spot welds
- General Purpose
- Industrial Exterior - Many exterior bonding applications
- 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 (mm) 0.635 Double Sided Double sided Material Resistance
High Temperature Resistance (°C) 93, 121 Moisture/Humidity Resistance Excellent moisture resistance 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
-
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.
-
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.
-
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
Spec Engine® Results
Popular Articles
An Overview of Fluid Dispensing Systems & How They’re Used
Read ArticleWhat Projects Require Custom Adhesive Formulations and Why?
Read ArticleInfographic: ENSURING A STRONG BOND - 6 Basic Methods of Surface Preparation
Read ArticleTesting the effectiveness of surface treatments
Read ArticleSponsored Articles
Unique Advantages of Contact Adhesives
Read ArticleUsing LOCTITE® 454™ is a Valid Option for Engineers Working with a Wide Variety of Materials
Read ArticleSylgard 184 by DOW is the Top Choice for a Transparent, Silicone Encapsulant. Read Why:
Read ArticleCase Study: Creating reliable, corrosion-free bonds with LORD® 406 acrylic adhesive
Read ArticleFeatured Ads

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% |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
>20 min | Approximately 50% of ultimate bond strength |
>1,440 min | 90% |
>4,320 min | 100% |
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. |
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. |
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. |