Epoxy Adhesive

2216 B/A

Overlap Shear (psi) 75°F (24°C)

3M™ Scotch-Weld™ Epoxy Adhesive

2216

2216

2216

B/A Gray

B/A Tan NS

B/A Trans.

Environment

Time

Adhesive

Adhesive

Adhesive

100% Relative Humidity

14 days

2950 psi

3400 psi

@ 120°F (49°C)

30 days

1985 psi

2650 psi

1390 psi

90 days

1505 psi

*Salt Spray @ 75°F (24°C)

14 days

2300 psi

3900 psi

30 days

500 psi

3300 psi

1260 psi

60 days

300 psi

Tap Water @ 75°F (24°C)

14 days

3120 psi

3250 psi

30 days

2942 psi

2700 psi

1950 psi

90 days

2075 psi

Air @ 160°F (71°C)

35 days

4650 psi

4425 psi

Air @ 300°F (149°C)

40 days

4930 psi

4450 psi

3500 psi

Anti-icing Fluid @ 75°F (24°C)

7 days

3300 psi

3050 psi

2500 psi

Hydraulic Oil @ 75°F (24°C)

30 days

2500 psi

3500 psi

2500 psi

JP-4 Fuel

30 days

2500 psi

2750 psi

2500 psi

Hydrocarbon Fluid

7 days

3300 psi

3100 psi

3000 psi

Typical Adhesive

Performance

Characteristics

(continued)

C. Overlap Shear Strength After Environmental Aging-Etched Aluminum

Overlap Shear (psi)

Time aged @ 300°F (149°C)

Test Temperature

0 days

12 days

40 days

51 days

-67°F (-53°C)

2200

3310

3120

2860

75°F (24°C)

3100

5150

4930

4740

180°F (82°C)

500

1000

760

1120

350°F (177°C)

420

440

560

—

D. Heat Aging of 3M™ Scotch-Weld™ Epoxy Adhesive 2216 B/A Gray

(Cured for 7 days @ 75°F [24°C])

- 6 -

*Substrate corrosion resulted in adhesive failure.