6013 is normal arc electrode which is used for light jobs like sheet welding or tank
making but when it comes to heavy construction jobs where strength required
is more 7018(Low Hydrogen) Arc Electrode is used like boilers, heavy structures
etc. Working with 6013 is far easier than 7018, which requires welder's skills.
Neatness in finishing is also more with 6013 than 7018.
any further info. on construction : nangalsuri@rediffmail.com
Surinder Singh
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what is the difference between 7018 and 7018-1
Almost all electrodes have a series of numbers to tell #1 what the tensile strength of the weld will be, #2 what electrical current to use, #3 what position/s it can be used in (ie: flat, vertical etc.) Ex. E - 7018. E = electrode, 70 = 70,000 lbs tensile strength, 1 = all positions, 18 = AC or DC reverse polarity current. (welding lead +)