What do the last two digits in E7018 indicate?

What do the last two digits in E7018 indicate?

• A. the welding position and the coating and the current to be used
• B. Weld metal diameter
• C. Date code
• D. Tensile strength

Answer: (A)

The last two digits in an electrode designation tell you how to use the electrode: they encode the welding position capability and the coating/current characteristics. This suffix shows what kind of flux/low-hydrogen coating the electrode has and whether it can weld in all positions or only some, as well as the current it’s intended to be run with. For E7018, those digits indicate a low-hydrogen coating and all-position usability with the appropriate current (often DC+ or AC). This is why that two-digit code is checked to decide if the electrode fits the job’s position and welding setup. It’s not about weld metal diameter, a date code, or the tensile strength—that latter is indicated by the earlier digits (70).

The last two digits in an electrode designation tell you how to use the electrode: they encode the welding position capability and the coating/current characteristics. This suffix shows what kind of flux/low-hydrogen coating the electrode has and whether it can weld in all positions or only some, as well as the current it’s intended to be run with. For E7018, those digits indicate a low-hydrogen coating and all-position usability with the appropriate current (often DC+ or AC). This is why that two-digit code is checked to decide if the electrode fits the job’s position and welding setup. It’s not about weld metal diameter, a date code, or the tensile strength—that latter is indicated by the earlier digits (70).