Technical Data Sheet

3M™ Scotch-Weld™ Urethane Adhesive EC-3549 B/A NF

II. Overlap Shear, Tested @ 73°F (23°C) (PSI) (ASTM D1002)

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

used for specification purposes.

Product

EC-3549 B/A NF

Aluminum

MEK/abrade/MEK

2160

Cold Rolled Steel

MEK/abrade/MEK

1960

Nylon

IPA/abrade/IPA

740

Polycarbonate

IPA/abrade/IPA

1210

Acrylic

IPA/abrade/IPA

1150

SMC

IPA/abrade/IPA

900

Rigid PVC

IPA/abrade/IPA

1180

ABS

IPA/abrade/IPA

1160

HIPS

IPA/abrade/IPA

460

III. Aluminum, Floating Roller Peel, Tested @ 73°F (23°C) (PIW) (ASTM D3167)

Temperature

EC-3549 B/A NF

73°F (23°C)

64

IV. Environmental Resistance, Aluminum (etched)

Measured by Overlap Shear Tested @ 73°F (23°C) (PSI) (ASTM D1002

Environment

Conditions

EC-3549 B/A NF

Room Temperature 73°F(23°C)/50% RH, 30 days

100%

Water Vapor

150°F (66°C)/ 80% RH, 30 days

100%

IPA

73°F(23°C, 30 days, tested on ABS

100%

Substrates and Testing

I. Overlap Shear (ASTM D1002)

Overlap Shear (ASTM D1002, 3M Test Method C-244) strength was measured on 1" wide x 1/2" overlap

specimen. These bonds were made individually using 1" x 4" pieces of substrates except for Aluminum. Two

panels 0.063 in. thick, 4 in. x 7 in of 2024T-3 clad aluminum were bonded and cut into 1 in. wide samples after

24 hours. The thickness of the adhesive bond line was approximately 0.005". All strengths were measured at

73°F (23°C) except when noted.

The separation rate of the testing jaws was 0.1 in. per minute for metals, 2 in. per minute for plastics and 20 in.

per minute for rubbers. The thickness of the substrates were: steel, 0.060 in.; other metals, 0.05-0.064 in.;

rubbers, 0.125in.; plastics, 0.125 in. and samples were allowed to cure at 75°F (24°C) and approximately 50%

RH for 1 week before tested. The separation rate of the testing jaws was 0.1 inch per minute for metals and 2

inches per minute for plastics.