AF191 datasheet(2/12 Pages) 3M

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3M™ Scotch-Weld™

Structural Adhesive Film AF 191

Technical Datasheet

- 2 -

3. Metal to Metal – Floating Roller Peel

Peel strength was measured on 1" wide specimens cut from 3" x 8" x .063" 2024-T3 bare aluminum panels

bonded to 3" x 10" x .025" 2024-T3 bare panels. Tests were conducted according to ASTM D 3167.

Scotch-Weld AF 191K Film

Scotch-Weld AF 191U Film

Scotch-Weld AF 191K Film

Test Temperature

0.080 lb/ft2 (390 g/m2)

0.05 lb/ft2 (244 g/m2)

0.03 lb/ft2 (146 g/m2)

°F (°C)

Scotch-Weld EC-3917 Primer

-67 (-55)

15 piw (66 N/25 mm)

–

21 piw (92 N/25 mm)

75 (23)

40 piw (175 N/25 mm)

30 piw (131 N/25 mm)

45 piw (197 N/25 mm)

250 (121)

––

30 piw (131 N/25 mm)

350 (177)

––

24 piw (105 N/25 mm)

Typical Product

Performance

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

or typical only and should not be used for specification purposes.

All data in this section was developed using 3M™ Scotch-Weld™ Structural Adhesive

Primer EC-3917 primed aluminum panels and an adhesive cure cycle of 60 minutes at

350°F (177°C) and 45 psi (3.1 Bar). A 4-5°F (2-3°C) minute rise rate to cure temperature

was used. Parts were cooled below 200°F (93°C) before removing from autoclave.

2. Metal to Metal – Overlap Shear

All properties were measured on 1" wide, 1/2" overlap specimen cut from 0.063" thick 4" x 7" bonded panels of

2024-T3 aluminum. Tests were conducted per MMM-A-132. Values are in psi (MPa).

Scotch-Weld

AF 191K

AF 191M

AF 191U

Film

Temperature

.10 lb/ft2

.08 lb/ft2

.06 lb/ft2

.035 lb/ft2

.030 lb/ft2

.05 lb/ft2

.035 lb/ft2

.015 lb/ft2

°F (°C)

(488 g/m2)

(390 g/m2)

(293 g/m2)

(170 g/m2)

(146 g/m2)

(244 g/m2)

(170 g/m2)

(73 g/m2)

Scotch-Weld

EC-3917

Primer

-423 (-253)

1460 (10.1)

–

1755 (12.1)

–

-67 (-55)

4000 (27.6)

4700 (32.4)

4300 (29.6)

5350 (36.9)

4000 (27.6)

–

75 (23)

4500 (31.0)

5400 (37.2)

5100 (35.2)

5060 (34.9)

5000 (34.5)

4500 (31.0)

5000 (34.5)

4100 (28.3)

250 (121)

–

3200 (22.1)

–

3050 (21.0)

–

300 (149)

3000 (20.7)

2800 (19.3)

–

3770 (26.0)

–

2300 (16.0)

2400 (16.5)

350 (177)

2600 (17.9)

2100 (14.5)

1700 (11.7)

2900 (20.0)

1900 (13.1)

2000 (14.0)

1. Thick Adherend Shear with 3M™ Scotch-Weld™ Structural Adhesive Film AF 191K (.08 lb/ft2) – Tested on

phosphoric acid anodized, unprimed aluminum

Test Temperature °F (°C)

Stress (psi)

Strain, %

Modulus (psi)

-67°F (-55°C)

4278

3.58

119,680

75°F (23°C)

1885

2.11

103,380

250°F (121°C)

1247

2.67

44,720

350°F (177°C)

900

3.12

28,670

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