Product Description 3M™ Scotch-Weld™ Epoxy Adhesive 2216 B/A is a flexible, two-part, room

temperature curing epoxy with high peel and shear strength. Scotch-Weld epoxy

adhesive 2216 B/A is identical to 3M™ Scotch-Weld™ Epoxy Adhesive EC-2216

B/A in chemical composition. Scotch-Weld epoxy adhesive EC-2216 B/A has been

labeled, packaged, tested, and certified for aircraft and aerospace applications.

Scotch-Weld epoxy adhesive 2216 B/A may be used for aircraft and aerospace

applications if proper Certificates of Test have been issued and material meets all

aircraft manufacturer’s specification requirements.

Features • Excellent for bonding many metals, woods, plastics, rubbers, and masonry products.

• Base and Accelerator are contrasting colors.

• Good retention of strength after environmental aging.

• Resistant to extreme shock, vibration, and flexing.

• Excellent for cryogenic bonding applications.

• The tan NS Adhesive is non-sag for greater bondline control.

• The translucent can be injected.

• Meets DOD-A-82720.

Technical Data December, 2009

Typical Uncured

Physical Properties

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

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

Product 3M™ Scotch-Weld™ Epoxy Adhesive

2216 B/A Gray 2216 B/A Tan NS 2216 B/A Translucent

Base Accelerator Base Accelerator Base Accelerator

Color: White Gray White Tan Translucent Amber

Base: Modified Modified Modified Modified Modified Modified

Epoxy Amine Epoxy Amine Epoxy Amine

Net Wt.: (lb/gal) 11.1-11.6 10.5-11.0 11.1-11.6 10.5-11.0 9.4-9.8 8.0-8.5

Viscosity: (cps) (Approx.)

Brookfield RVF 75,000 - 40,000 - 75,000 - 550,000 - 11,000 - 5,000 -

#7 sp. @ 20 rpm 150,000 80,000 150,000 900,000 15,000 9,000

Mix Ratio: (by weight) 5 parts 7 parts 5 parts 7 parts 1 part 1 part

Mix Ratio: (by volume) 2 parts 3 parts 2 parts 3 parts 1 part 1 part

Work Life:

100 g Mass @ 75°F (24°C) 90 minutes 90 minutes 120 minutes 120 minutes 120 minutes 120 minutes

3M™ Scotch-Weld™

Epoxy Adhesive

2216 B/A

Typical Cured

Physical Properties

Product 3M™ Scotch-Weld™ Epoxy Adhesive

2216 Gray 2216 Tan NS 2216 Translucent

Color Gray Tan Translucent

Shore D Hardness 50-65 65-70 35-50

ASTM D 2240

Time to Handling Strength 8-12 hrs. 8-12 hrs. 12-16 hrs.

Typical Cured

Electrical Properties

Product 3M™ Scotch-Weld™ Epoxy Adhesive

2216 Gray 2216 Translucent

Arc Resistance 130 seconds

Dielectric Strength 408 volts/mil 630 volts/mil

Dielectric Constant@73°F (23°C) 5.51–Measured @ 1.00 KHz 6.3 @ 1 KHz

Dielectric Constant@140°F (60°C) 14.17–Measured @ 1.00 KHz —

Dissipation Factor 73°F (23°C) 0.112 Measured @ 1.00 KHz 0.119 @ 1 KHz

Dissipation Factor 140°F (60°C) 0.422–Measured @ 1.00 KHz —

Surface Resistivity@73°F (23°C) 5.5 x 1016 ohm–@ 500 volts DC —

Volume Resistivity@73°F (23°C) 1.9 x 1012 ohm-cm–@ 500 volts DC 3.0 x 1012 ohm-cm

@ 500 volts DC

Typical Cured

Thermal Properties

Product 3M™ S