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Metal adhesives

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Master Bond EP34 Room Temperature Curing Two Component Epoxy System
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive; Epoxy, High Temperature

Material Notes: Key Features:
  • Resists up to +450°F
  • Easily machinable
  • Excellent dimensional stability
  • High bond strength
  • Superb electrical insulation properties
  • Two component system
Product Description: Master Bond EP34 is a two part, room temperature curing epoxy system for bonding, sealing and coating featuring high temperature resistance, sterling dimensional stability and peerless electrical insulation properties. It is also much easier to machine compared to most other epoxies. It has a 100 to 70 mix ratio by weight and a very convenient one to one ratio by volume. This system cures readily at room temperature or more rapidly at elevated temperatures. To optimize its properties, the recommended cure schedule is overnight at room temperature followed by a post cure at 150-200°F for 2-3 hours. Upon polymerization EP34 is serviceable from -60°F to +450°F. It resists a range of chemicals including water, oils, fuels and many acids and bases. This moderate viscosity system bonds well to a wide variety of substrates including metal, composites, glass, ceramics and many rubbers and plastics. As previously mentioned, it is a top notch electrical insulator and has an array of superior physical properties. EP34 is 100% reactive and does not contain any diluents or solvents. The color of Part A is gray, Part B is amber. It is widely used in aerospace, electronic, electrical and specialty OEM type applications.

Product Advantages:

  • Convenient mixing: one to one ratio by volume
  • Easy application: contact pressure only required for cure; adhesive spreads evenly and smoothly
  • High temperature resistance up to +450°F
  • Noteworthy electrical insulation properties
  • Excellent dimensional stability
  • Easily machinable
  • Superb adhesion to a wide variety of substrates

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 1500 - 3000 cPPart B
 120000 - 170000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 85 - 90
Tensile Strength 8000 - 9000 psi
Tensile Modulus 450000 - 500000 psi
Compressive Strength 22000 - 24000 psi
Adhesive Bond Strength 2600 - 2800 psiTensile lap, Aluminum to Aluminum
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+14 ohm-cm
Dielectric Constant 4.5
@Frequency 60 Hz
Dielectric Strength 450 V/mil
@Thickness 3.17 mm
 
Thermal PropertiesOriginal ValueComments
Maximum Service Temperature, Air 450 °F
Minimum Service Temperature, Air -60.0 °F
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 93.3 °C
 48.0 - 72.0 hour
@Temperature 23.9 °C
Working Life 75.0 - 120 minAfter mixing, 100 g batch
Shelf Life 12.0 Month
@Temperature <=23.9 °C
in original, unopened containers
 
Descriptive Properties
Mixing Ratio1:1 by volumeParts A to B
 100:70 by weightParts A to B

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PMASTM870 / 185463

Metal adhesives

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