March 2018

3M™ Scotch-Weld™ AF 3074 FST

Structural Core Splice Film

Preliminary Technical Data Sheet

Product Description

3M™ Scotch-Weld™ AF (Adhesive Film) 3074 FST (Fire Smoke and Toxicity) is an epoxy based, 250°F to 350°F

(120°C to 180°C) curable, structural core splice adhesive film which expands during cure. AF 3074 FST was designed

for typical aircraft applications in interior and structural areas, e.g. filling mismatch areas or reinforcing and splicing

honeycomb core.

Key Features

•

High and repeatable expansion rate

•

Flame retardant acc. FAR/JAR/CS 25.853(a) App F, part I(a)(1)(ii).

•

Compatible with 250°F and 350°F (120°C to 180°C) cure cycles

•

Wide in- service temperature range from -67°F up to 275°F (-55°C up to 135°C)

•

Extended shop and shelf life at room temperature

Product Characterization

Note: The following technical information and data should be considered as representative or typical only and should not

be used for specification purposes.

General Properties

30 mil version

50 mil version

Test Method

Color

Gray

Gray

Chemical base

Epoxy

Epoxy

Form

Unsupported film

Unsupported film

Liners

Polyethylene (blue)

Polyester (red)

Polyethylene (yellow)

Polyester (red)

Thickness

30 mil

(0.76 mm)

50 mil

(1,27 mm)

prEN 2667-3

Mass per unit area

(900 g/m²)

0.328 lb/ft²

(1600 g/m²)

prEN 2667-3

Volatiles content (120 °C cure)

< 1 wt.%

< 1 wt.%

prEN 2667-3

Available packaging sizes

Sheets (12 x 16 in)

(300 x 400 mm)

Sheets (12 x 16 in)

(300 x 400 mm