The electrode is 1/8" in diameter
The "E" stands for arc welding electrode.
Next will be either a 4 or 5 digit number stamped on the electrode. The first two numbers of a 4 digit number and the first 3 digits of a 5 digit number indicate the minimum tensile strength (in thousands of pounds per square inch) of the weld that the rod will produce, stress relieved. Examples would be as follows:
E60xx would have a tensile strength of 60,000 psi E110XX would be 110,000 psi
The next to last digit indicates the position the electrode can be used in.
The last two digits together,
indicate the type of coating on the electrode and the welding current
the electrode can be used with. Such as DC straight, (DC -) DC reverse
(DC+) or A.C.
ELECTRODE SIZE AND AMPS USED
SOME ELECTRODE TYPES
E6010 - This electrode is used for all position welding using DCRP (DCEP). It produces a deep penetrating weld and works well on dirty, rusted, or painted metals
E6011 - This electrode has the same characteristics of the E6010, but can be used with AC and DC currents.
E6013 - This electrode can be used with AC and DC currents. It produces a medium penetrating weld with a superior weld bead appearance.
E7018 - This electrode is known as a low hydrogen electrode and can be used with AC or DC. The coating on the electrode has a low moisture content that reduces the introduction of hydrogen into the weld. The electrode can produce welds of x-ray quality with medium penetration. (Note, this electrode must be kept dry. Store this rod in sealed containers or in a hot box.)