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Metal adhesives

3M Scotch-Weld™ DP640 Structural Adhesive
Categories: Polymer; Adhesive

Material Notes: 3M™ Scotch-Weld™ Urethane Adhesives are two-part, non-sag urethane adhesives. They feature tough, flexible bonds with good adhesion to a wide variety of substrates especially wood and many properly abraded and cleaned plastics. Good adhesion can also be obtained on etched aluminum as well as primed aluminum, steel glass. For maximum bond durability under moisture conditions, priming of glass and metal substrates is required.

Information provided by 3M

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Physical PropertiesMetricEnglishComments
Viscosity 25000 cP25000 cP
Brookfield Viscosity 10000 - 40000 cP10000 - 40000 cPBase, RVF #6 sp @ 10 rpm
 15000 - 55000 cP15000 - 55000 cPAccelerator, RVF #5 sp @ 10 rpm
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 70 - 8070 - 80ASTM D2240
Elongation at Break 100 %100 %ASTM D882
Shear Strength 13.8 MPa2000 psi
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 2.60e+12 ohm-cm2.60e+12 ohm-cmASTM D257
Dielectric Constant 5.9
@Frequency 1000 Hz
5.9
@Frequency 1000 Hz
ASTM D150
Dielectric Strength 18.5 kV/mm470 kV/inASTM D149
Dissipation Factor 0.12
@Frequency 1000 Hz
0.12
@Frequency 1000 Hz
ASTM D150
 
Processing PropertiesMetricEnglishComments
Cure Time 360 - 480 min6.00 - 8.00 hourTime to Handling Strength
 10100 min168 hourFull Cure
 
Descriptive Properties
AppearanceBrown

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PMM34659 / 169406

Metal adhesives

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