Technical Data Sheet

3M™ Scotch-Weld™ AF 3074 FST

Product Characterization

The following product performance data were obtained with the 50 mil version of Scotch-Weld™ AF 3074 FST using

two different cure cycles:

•

Cure Cycle A: 60 minutes at 257°F (125°C), heat-up rate 5-7°F/min (3-4°C/min), atmospheric pressure

•

Cure Cycle B: 30 minutes at 320°F (160°C), hot-in/hot-out, atmospheric pressure

Properties of Cured Film

Cure Cycle A

Cure Cycle B

Test Method

Expansion during cure

~ 225 %

~ 125 %

prEN 2667-3

Vertical slump

0.02 in

(0,6 mm)

0.01 in

(0,3 mm)

prEN 2667-4

< 0.50 g/cm³

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Tube Shear Strength

The tube shear strength was determined on ScotchWeld™ AF 3074 FST using the procedures outlined in prEN 2667-2.

55g ± 0.2g were placed between the walls of two 9in (230mm) long tubes. After curing under atmospheric pressure,

the tubes were cut to individual specimens of 0.5in (12.5mm) height. Tube shear resistance was calculated by the

Outer and inner tubes: 12.5 mm height, aluminum alloy 5052-0 bare.

Outer tube: diameter 25.0 mm, thickness 1.25 mm.

Tube shear strength

prEN 2667-2

Test temperature

Cure Cycle A

-67°F

(-55°C)

1883 PSI

(13 MPa)

73°F

(23°C)

1883 PSI

(13 MPa)

176°F

(80°C)

1738 PSI

(12 MPa)

275°F

(135°C)

1014 PSI

(7 MPa)