Specifications for Electrodes

There is not a fixed rule of coding for bared electrodes. But there is a six digit code which is used for specification of the coated electrodes. The six digit code has a prefix and suffix letter. For example, E426413H

• The first suffix letter shows the method of manufacturing of electrode. This may be solid extrusion—E or extruded with reinforcement—R.
• The first digit (1–7) shows the types of coating, i.e., the high content of coating.
• The second digit (0–4) shows the position of welding.
• The third digit (0–4) shows the electric current conditions (AC or DC), polarity, and voltage required.
• The fourth and fifth digit shows the yield stress. For example, 41 show its yield strength is 410–510 N/mm.
• The sixth digit shows the percentage elongation with impact strength.
• Suffix letters show the special properties of the electrode.