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Metal adhesives

Master Bond EP51AO Two Component Epoxy Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Key Features:
  • Superior dimensional stability
  • Easy handling
  • Thermally conductive
  • Very rapid curing
  • Cryogenically serviceable
  • Suitable for bonding, sealing and coating
Product Description: Master Bond EP51AO is a two component, thermally conductive, electrically isolating epoxy adhesive, sealant, and coating with a convenient one to one mix ratio by weight or volume. Another outstanding feature of this system is a faster set up time and curing schedule. This versatile system will adhere to a wide variety of substrates including metals, composites, glass, ceramics, and many plastics. Some other desirable properties upon curing are high tensile shear strength, a low coefficient of thermal expansion and good dimensional stability. One feature that is especially noteworthy is its cryogenic serviceability over the wide temperature range of 4K to +250°F. EP51AO resists a wide range of chemicals including water, oils, fuels, and many cleaning agents. It is widely used in electronic, electrooptic, aerospace and many R&D type applications where convenient handling and good thermal conductivity along with good electrical insulation and fast curing is desirable.

Product Advantages:

  • Convenient mixing: non-critical one to one mix ratio by weight or volume
  • Easy application: adhesive spreads evenly and smoothly; self leveling feature
  • Fast cures at room temperature
  • High bonding strength to a wide variety of substrates
  • Lower coefficient of expansion, low shrinkage, superb dimensional stability
  • Excellent thermal conductivity and electrical insulation properties

Information provided by Master Bond Inc.

Vendors: Master Bond is a leading manufacturer of adhesives, sealants, coatings and potting compounds. Master Bond’s vast product line consists of over 3,000 epoxy, polyurethane, silicone, cyanoacrylate and latex adhesives that vary in viscosity, cure speed, strength, chemical resistance, electrical properties, etc. Our custom adhesives offer design flexibility and provide excellent bonding performance. Visit www.masterbond.com.

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Physical PropertiesMetricEnglishComments
Viscosity 50000 - 100000 cP50000 - 100000 cPPart A
 75000 - 125000 cP75000 - 125000 cPPart B
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D >= 75>= 75
Tensile Strength >= 31.0 MPa>= 4500 psi
Tensile Modulus >= 2.76 GPa>= 400 ksi
Adhesive Bond Strength >= 5.86 MPa>= 850 psiTensile lap, Aluminum to Aluminum
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+15 ohm-cm>= 1.00e+15 ohm-cm
Dielectric Strength >= 15.7 kV/mm
@Thickness 3.17 mm
>= 400 kV/in
@Thickness 0.125 in
 
Thermal PropertiesMetricEnglishComments
Thermal Conductivity 1.30 - 1.44 W/m-K9.02 - 9.99 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 121 °C250 °F
Minimum Service Temperature, Air -167 °C-269 °F
 
Processing PropertiesMetricEnglishComments
Cure Time  60.0 min
@Temperature 93.3 °C
1.00 hour
@Temperature 200 °F
 720 - 1440 min
@Temperature 23.9 °C
12.0 - 24.0 hour
@Temperature 75.0 °F
Working Life 8.00 - 12.0 min8.00 - 12.0 minAfter mixing, 100 g batch
Shelf Life 6.00 Month
@Temperature <=23.9 °C
6.00 Month
@Temperature <=75.0 °F
in original, unopened containers
 
Descriptive Properties
Mixing Ratio1:1 by weight or volumeParts A to B

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PMASTM892 / 185485

Metal adhesives

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