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Metal adhesives

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3M Scotch-Weld™ 3549 B/A Two-Part Structural Adhesive
Categories: Polymer; Adhesive

Material Notes: 3M™ Scotch-Weld™ Urethane Adhesives are two-component, polyurethane adhesives which cure at room temperature or with heat to form tough, impact-resistant structural bonds. Their adhesion properties are identical and they vary only in work life, cure time and color. They provide excellent adhesion to many primed or painted metal and plastic substrates and are designed to develop sag resistance approximately 30 second after mixing.

Information provided by 3M

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Physical PropertiesOriginal ValueComments
Viscosity 30000 cP
Brookfield Viscosity 10000 - 40000 cPBase, RVF #6 sp @ 20 rpm
 15000 - 40000 cPAccelerator, RVF #5 sp @ 20 rpm
 
Mechanical PropertiesOriginal ValueComments
Shear Strength 20.0 psi
@Temperature 82.0 °C
Overlap, Solvent Wiped Steel
 40.0 psi
@Temperature 82.0 °C
Overlap, Nylon
 70.0 psi
@Temperature 82.0 °C
Overlap, Plexiglas
 100 psi
@Temperature 82.0 °C
Overlap, Solvent Wiped Al
 100 psi
@Temperature 82.0 °C
Overlap, Abraded and Solvent Wiped Steel
 110 psi
@Temperature 82.0 °C
Overlap, Rigid PVC
 110 psi
@Temperature 82.0 °C
Overlap, Polystyrene
 125 psi
@Temperature 82.0 °C
Overlap, Lexan
 180 psi
@Temperature 82.0 °C
Overlap, FRP
 240 psi
@Temperature -40.0 °C
Overlap, Nylon
 300 psi
@Temperature 82.0 °C
Overlap
 300 psi
@Temperature 82.0 °C
Overlap, Etched Aluminum
 300 psi
@Temperature 82.0 °C
Overlap, Abraded and Solvent Wiped Al
 300 psi
@Temperature 82.0 °C
Overlap, ABS
 330 psi
@Temperature -40.0 °C
Overlap, Polystyrene
 370 psi
@Temperature -40.0 °C
Overlap, Rigid PVC
 440 psi
@Temperature -40.0 °C
Overlap, ABS, Substrate Failure
 530 psi
@Temperature 24.0 °C
Overlap, Polystyrene
 580 psi
@Temperature 24.0 °C
Overlap, Nylon
 620 psi
@Temperature -40.0 °C
Overlap, Plexiglas
 700 psi
@Temperature 24.0 °C
Overlap, Solvent Wiped Steel
 810 psi
@Temperature 24.0 °C
Overlap, ABS
 960 psi
@Temperature 24.0 °C
Overlap, Rigid PVC
 1000 psi
@Temperature -40.0 °C
Overlap, Solvent Wiped Al
 1000 psi
@Temperature -40.0 °C
Overlap, Solvent Wiped Steel
 1000 psi
@Temperature 24.0 °C
Overlap, Solvent Wiped Al
 1150 psi
@Temperature 24.0 °C
Overlap, FRP, Substrate Failure
 1200 psi
@Temperature 24.0 °C
Overlap, Abraded and Solvent Wiped Steel
 1240 psi
@Temperature -40.0 °C
Overlap, Lexan, Substrate Failure
 1300 psi
@Temperature 24.0 °C
Overlap, Plexiglas
 1660 psi
@Temperature -40.0 °C
Overlap, FRP, Substrate Failure
 1840 psi
@Temperature 24.0 °C
Overlap, Lexan, Substrate Failure
 2000 psi
@Temperature -40.0 °C
Overlap, Abraded and Solvent Wiped Steel
 2000 psi
@Temperature 24.0 °C
Overlap
 2000 psi
@Temperature 24.0 °C
Overlap, Etched Aluminum
 2000 psi
@Temperature 24.0 °C
Overlap, Abraded and Solvent Wiped Al
 2000 psi
@Temperature -40.0 °C
Overlap, Abraded and Solvent Wiped Al
 2500 psi
@Temperature -40.0 °C
Overlap, Etched Aluminum
 2500 psi
@Temperature -55.0 °C
Overlap
Peel Strength 25.0 pliT-Peel
 
Processing PropertiesOriginal ValueComments
Cure Time 8.00 hour
 168 hourFull Cure
 
Descriptive Properties
AppearanceBrownAccelerator
 Off-WhiteBase

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