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Description for 3M VHB Tape 4943F
• Interior bonding applications • Exterior bonding applications • Replace spot welds • • Excellent solvent resistance. • Replace liquid adhesives • Replace rivets • High Tensile • High shear • Outstanding durability.Brand VHB Chemical Resistance Chemical Resistance: Excellent solvent resistance, Chemical Resistance: Very good plasticizer resistance Application Type Bond 1 Part or 2 Part 1 Part Material Form Tape Substrate Anodized Aluminum, Copper, Foam, Glass, Lead, Tin, Zinc, Stainless Steel Industry Many interior bonding applications, Many exterior bonding applications, Replace rivets Manufacturer 3M Chemistry Acrylic Foam Cure Method Pressure sensitive Cure Temperature (°C) 20 to 25 Room temperature Cure Time (min) 20, 1,440, 4,320 Color Gray Total Thickness (mm) 1.143 High Temperature Resistance (°C) 200, 300 Low Temperature Resistance (°C) Low Stress Relief Stress relaxing Durability Outstanding durability Density (g/cm³) 45 (Ib/ft3) Key Specifications UL 746C
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Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
---|---|
20 to 25°C Room temperature | 50% of ultimate bond strength will be achieved |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
20 min | 50% of ultimate bond strength will be achieved |
1,440 min | 90% of ultimate bond strength will be achieved |
4,320 min | 100% of ultimate bond strength will be achieved |
Shear Strength Test Methods
Shear Strength | Type | Cure Time | Substrate | Test Time | Test Temperature | Test Method |
---|---|---|---|---|---|---|
High | ||||||
70 (lb/in 2) | Dynamic Overlap Shear Strength | 4,320 min | Stainless Steel | 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 (3.23 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. | |
500 (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 (3.23 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. | |
500 (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 (3.23 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. |
Peel Strength Test Methods
Peel Strength | Type | Cure Time | Substrate | Test Temperature | Test Method |
---|---|---|---|---|---|
High | |||||
20 (Ib/in) | 90° Peel Strength | 4,320 min | Stainless Steel | 25°C | 90° Peel Adhesion - 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 |
Tensile Strength Test Methods
Tensile Strength | Type | Cure Time | Substrate | Test Temperature | Test Method |
---|---|---|---|---|---|
High | |||||
85 (lb/in 2) | T-Block Tensile | 4,320 min | Aluminum | 25°C | ASTM D-897 - To aluminum, room temperature, 1 in2 (6.45 cm2), jaw speed 2 in/min (50.8 mm/min) Peak force to separate is measured. 72 hour dwell. |
High Temperature Resistance Test Methods
High Temperature Resistance | Test Method |
---|---|
200°C | Long Term Temperature Tolerance - Maximum temperature where tape supports at least 250 g load per 0.5 in2 in static shear for 10,000 minutes. (Represents continuous exposure for days or weeks). |
300°C | Short Term Temperature Tolerance - No change in room temperature dynamic shear properties following 4 hours conditioning at indicated temperature with 100 g/static load. (Represents minutes, hours in a process type temperature exposure). |