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Metal adhesives

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Master Bond EP51M Fast Curing Thermal Cycling Resistant Epoxy Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Key Features:
  • Cryogenic serviceability
  • High tensile shear strength
  • One to one mix ratio, weight or volume
  • Rapid curing — fixture time 7-12 minutes at 75°F
  • Available in different viscosities or colors
  • For repair and high speed production
Product Description: Master Bond EP51M is a high performance “3” minute type system featuring very rapid curing and a convenient one to one mix ratio by weight or volume. In a sense EP51M is a faster setting version of the more commonly used standard 5 minute type system such as Master Bond EP51. The difference in curing is pronounced, EP51M has a working life of 3-5 minutes and a fixturing period of 7-12 minutes. Full curing also depends on these parameters and can range from 8-16 hours. Upon polymerization, EP51M has a superior physical strength profile. It offers solid tensile shear strength, fine toughness, along with a reasonably high tensile modulus. It also has sound chemical resistance. Most importantly, EP51M has been successfully used in a number of cryogenic applications over the broad temperature range of 4K to +250°F. It bonds well to a wide array of substrates, including composites, metals, glass, ceramics and many rubbers and plastics. EP51M offers typically superior epoxy type electrically insulative properties. EP51M is available in a wide variety of colors, but its standard color is amber. It can be used in aerospace, specialty OEM and related applications, particularly for repair and high speed production applications. Another excellent fit for using EP51M is for rapid prototyping and selected R&D applications.

Product Advantages:

  • Non-critical one to one mix ratio by weight or volume
  • Easy application, adhesive spreads evenly and smoothly
  • Fast cure at ambient temperatures
  • High bonding strength to a wide variety of substrates
  • Available in various viscosities and colors
  • Serviceable at cryogenic temperatures down to 4K

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 PropertiesOriginal ValueComments
Viscosity 10000 - 16000 cPPart A
 50000 - 75000 cPPart B
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D >= 70
Tensile Strength >= 5000 psi
Tensile Modulus >= 350000 psi
Adhesive Bond Strength >= 2000 psiTensile lap, Aluminum to Aluminum
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+14 ohm-cm
Dielectric Constant 4.5
@Frequency 60 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 60.0 - 65.0 µm/m-°C
Maximum Service Temperature, Air 250 °F
Minimum Service Temperature, Air -269 °F
 
Processing PropertiesOriginal ValueComments
Cure Time 8.00 - 16.0 hour
@Temperature 23.9 °C
Working Life 3.00 - 5.00 minAfter mixing, 40 gram batch
Shelf Life 12.0 Month
@Temperature <=23.9 °C
in original, unopened containers
 
Descriptive Properties
Mixing Ratio1:1 by weight or volumeParts A to B

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PMASTM893 / 185486

Metal adhesives

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