© COPYRIGHT 2000 THE ESAB GROUP, INC. LESSON III 3/16" 200 76.4 4.85 250 74.6 5.36 300 70.3 5.61 7/32" 250 75.0 6.5 300 74.0 7.2 350 73.0 7.4 1/4" 300 78.0 7.72 350 77.0 8.67 400 74.0 9.04 *Note:  Efficiencies do not include stub loss 3.7.11 ATOM ARC 7018AC (AWS E7018) - This iron powder low hydrogen electrode was specifically designed for optimum performance on AC power sources.  This electrode features easier arc starting, improved restrike, and smoother metal transfer than a standard E7018 electrode on AC.  Typically, this electrode is used as a tacking electrode.





Lesson 1
The Basics of Arc Welding
Lesson 2
Common Electric
Arc Welding Processes
Lesson 3
Covered Electrodes for Welding
Mild Steels
Lesson 4
Covered Electrodes for Welding Low Alloy Steels
Lesson 5
Welding Filler Metals for Stainless Steels
Lesson 6
Carbon & Low Alloy
Steel Filler Metals -
GMAW,GTAW,SAW
Lesson 7
Flux Cored Arc Electrodes Carbon Low Alloy Steels
Lesson 8
Hardsurfacing Electrodes
Lesson 9
Estimating & Comparing Weld Metal Costs
Lesson 10
Reliability of Welding Filler Metals
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