AFTC AM9408
AFTC AM9408 is a double-sided, closed cell acrylic foam tape at 0.031″ (±15%) thickness, with a 90° peel adhesion of 19 lb/in and a dynamic shear strength of 90 lb/in². It is rated for long-term temperature resistance to 212°F and short-term resistance to 320°F, with a minimum temperature resistance of -40°F. The tape features Acrylic Coating 47 adhesive on both sides, an acrylic adhesive foam core, and a Bordeaux PE liner.
Key Properties
- 90° Peel Adhesion: 19 lb/in (ASTM D3330)
- Dynamic Shear Strength: 90 lb/in² (ASTM D1002)
- Tensile Strength: 92 lb/in² (ASTM D897)
- Temperature Resistance: -40°F (min) / 212°F (long-term) / 320°F (short-term)
- Liner / Carrier: Bordeaux PE liner / Coated Acrylic Foam substrate
- Total Tape Thickness: 0.031″ ±15%
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 0.031″ ±15% | — |
| Color | Gray | — |
| Material / Substrate | Coated Acrylic Foam | — |
| Core | Acrylic Adhesive Foam Core | — |
| Adhesive Type | Acrylic Coating 47 | — |
| Adhesive System | Permanent Adhesive | — |
| Adhesive Side | Double Sided Adhesive | — |
| Liner | Bordeaux PE liner | — |
| Density | 52 lb/ft³ | — |
| Cell Structure | Closed Cell | — |
Adhesion Properties
| Property | Value | Test Method |
| 90° Peel Adhesion | 19 lb/in | ASTM D3330 |
| Dynamic Shear Strength | 90 lb/in² | ASTM D1002 |
| Tensile Strength | 92 lb/in² | ASTM D897 |
| Static Shear Strength @ 72°F | 1,000 grams* | ASTM 3654 |
| Static Shear Strength @ 150°F | 500 grams* | ASTM 3654 |
| Static Shear Strength @ 200°F | 500 grams* | ASTM 3654 |
*Weight that 1/2 square inch will hold for 10,000 minutes (7 days).
Thermal Properties
| Property | Value | Test Method |
| Minimum Temperature Resistance | -40°F | — |
| Short-Term Temperature Resistance | 320°F | — |
| Long-Term Temperature Resistance | 212°F | — |
| Recommended Application Temperature | Minimum 59°F | — |
Environmental Performance
| Property | Value | Test Method |
| Solvent Resistance | Excellent | — |
| UV Resistance | Excellent | — |
Shelf Life / Storage
| Property | Value | Test Method |
| Shelf Life | 18 months | — |
| Recommended Storage Conditions | Store in its original package and in a dry place between 39.2°F and 100.4°F | — |
- Bonding to lacquered automotive parts and coatings where a mid-range bondline thickness and high peel adhesion are required
- Attachment of high and medium surface energy plastic components in automotive and industrial assemblies
- Bonding to glass, steel, aluminum, and ceramic substrates where 19 lb/in peel resistance is the selection criterion
- Double-sided structural bonding requiring a 0.031″ bondline with excellent UV and solvent resistance
- Gap-filling bonding applications where the additional thickness of AM9408 over thinner grades improves surface conformability
Common industries: Automotive, Industrial Manufacturing, Construction, Electronics.
AFTC AM9408 is a mid-range grade in the AFTC acrylic foam tape range at 0.031″. It is constructed with an acrylic adhesive foam core coated on both sides with Acrylic Coating 47 permanent adhesive, supplied with a Bordeaux PE liner.
The tape delivers very strong bonding with excellent initial tack and adhesion performance during application, and is specifically noted as ideal for lacquered parts and other coatings in the automotive industry as well as for bonding to high and medium surface energy substrates including plastics, glass, steel, aluminum, and ceramics.
AM9408 achieves a 90° peel adhesion of 19 lb/in per ASTM D3330, a dynamic shear strength of 90 lb/in² per ASTM D1002, and a tensile strength of 92 lb/in² per ASTM D897. Static shear strength at 72°F is 1,000 grams (per 1/2 in² for 10,000 minutes / 7 days) per ASTM 3654. The tape offers excellent solvent and UV resistance and is rated for long-term use to 212°F and short-term to 320°F.
Shelf life is 18 months; store in original packaging in a dry environment between 39.2°F and 100.4°F. Minimum recommended application temperature is 59°F. Minimum bond line pressure required is 14.5 psi, applied by hand roller or mechanical presser.
What differentiates AM9408 from AM9406 and AM9412 in the AFTC range?
AM9408 at 0.031" provides higher peel adhesion (19 lb/in) than AM9406 (17 lb/in) and AM9404 (14 lb/in), while its dynamic shear strength of 90 lb/in² and tensile strength of 92 lb/in² are lower than the thinner grades. Compared to AM9412 (0.047"), AM9408 offers higher shear and tensile values (90 vs. 85 lb/in²) with slightly lower peel adhesion (19 vs. 20 lb/in). AM9408 suits applications requiring a mid-range bondline with elevated peel performance.
Why is peel adhesion important for acrylic foam tape selection?
Peel adhesion at 90° measures the resistance of the tape bond to delamination forces acting at an angle to the bonded surface — the mode most commonly encountered in assembled parts that flex, vibrate, or experience differential thermal expansion. Higher peel adhesion means the bond is less likely to initiate peeling under these service conditions. AM9408 achieves a 90° peel adhesion of 19 lb/in per ASTM D3330.
What is the operating temperature range for AM9408?
AM9408 has a minimum temperature resistance of -40°F, a long-term temperature resistance of 212°F, and a short-term temperature resistance of 320°F.
Is AM9408 suitable for automotive or regulated environments?
No compliance standards are specified on the manufacturer's TDS for AM9408. The product description specifically references suitability for lacquered parts and coatings in the automotive industry based on its adhesion and adaptability characteristics.
How should AM9408 be specified?
Specify grade (AM9408 / H-O part number SRMAM9408), thickness (0.031" ±15%), liner type (Bordeaux PE), substrate surface preparation requirements, bond line pressure (minimum 14.5 psi), primer requirements if applicable, dimensional tolerances, and finished format.
