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Metal adhesives

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 PropertiesMetricEnglishComments
Viscosity 1500 - 3000 cP1500 - 3000 cPPart B
 120000 - 170000 cP120000 - 170000 cPPart A
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 85 - 9085 - 90
Tensile Strength 55.2 - 62.1 MPa8000 - 9000 psi
Tensile Modulus 3.10 - 3.45 GPa450 - 500 ksi
Compressive Strength 152 - 165 MPa22000 - 24000 psi
Adhesive Bond Strength 17.9 - 19.3 MPa2600 - 2800 psiTensile lap, Aluminum to Aluminum
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cm
Dielectric Constant 4.5
@Frequency 60 Hz
4.5
@Frequency 60 Hz
Dielectric Strength 17.7 kV/mm
@Thickness 3.17 mm
450 kV/in
@Thickness 0.125 in
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 232 °C450 °F
Minimum Service Temperature, Air -51.1 °C-60.0 °F
 
Processing PropertiesMetricEnglishComments
Cure Time  120 - 180 min
@Temperature 93.3 °C
2.00 - 3.00 hour
@Temperature 200 °F
 2880 - 4320 min
@Temperature 23.9 °C
48.0 - 72.0 hour
@Temperature 75.0 °F
Working Life 75.0 - 120 min75.0 - 120 minAfter mixing, 100 g batch
Shelf Life 12.0 Month
@Temperature <=23.9 °C
12.0 Month
@Temperature <=75.0 °F
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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