Structural Adhesive Film

AF 126 • AF 126 FR

3M™ Scotch-Weld™ Structural

Adhesive Film AF 126

MIL-A-25643B

3M™ Scotch-Weld™ Structural

Type I

Adhesive Primer EC-2320

Requirement

Test Conditions

Minimum Average

Average

1. Normal Temperature Sandwich Peel Strength

12.5 in•lb/in

55.6 mN/m

40.3 in•lb/in

179.3 mN/m

2. 180°F (82°C) Sandwich Peel Strength

10.0 in•lb/in

44.5 mN/m

23.5 in•lb/in

104.5 mN/m

3. -67°F (-55°C) Sandwich Peel Strength

10.0 in•lb/in

44.5 mN/m

26.7 in•lb/in

118.8 mN/m

4. Normal Temperature Flatwise Tensile Strength

750 psi

5.2 MPa

1242 psi

8.6 MPa

5. 180°F (82°C) Flatwise Tensile Strength

400 psi

2.8 MPa

550 psi

3.8 MPa

6. -67°F (-55°C) Flatwise Tensile Strength

800 psi

5.5 MPa

1359 psi

9.4 MPa

7. Normal Temperature Flexural Strength

2100 lb

9340 N

2414 lb

10737 N

8. 180°F (82°C) (short term) Flexural Strength

1275 lb

5671 N

1448 lb

6440 N

9. -67°F (-55°C) Flexural Strength

2150 lb

9561 N

2644 lb

11760 N

10. 180°F (82°C) (long term) Flexural Strength

1500 lb

6672 N

1637 lb

7281 N

11. Normal Temperature Creep Deflection in

0.025 in max

0.635 mm max

0.0011 in max

0.0279 mm max

Flexure after 192 hours under 1000 lbs.

(4450 N) load

12. 180°F (82°C) Creep Deflection in Flexure

0.050 in max

1.27 mm max

0.0210 in max

0.5334 mm max

after 192 hours under 800 lb (3560 N) load

13. Normal Temperature Flexure Strength

1800 lb

8006 N

2485 lb

11058 N

after 30 days in 90-100% Relative Humidity

120°F (49°C)

14. Normal Temperature Flexure Strength after

—

—

2251 lb

10017 N

30 days in Salt Spray (Fed. Test Method

Std. No. 151, method 811)

15. Normal Temperature Flexure Strength after

—

—

2456 lb

10969 N

30 days Immersion in Hydrocarbon Fluid

(Spec. MIL-S-3136 Type III)

- 3 -

Product Performance

MIL-A-25463 Type I

Class 1 & 2 Test Data

Miscellaneous

Test Data

Storage Life Testing

and 75°F (24°C). Results are overlap shear tests made on 1/2" (12.5 mm) lap joint

specimens of 0.064" (1.6 mm) clad 2024-T3 aluminum.

Note: The following technical information and data should be considered representative or typical only

and should not be used for specification purposes.