What does the "E" stand for in ER70S-6?

What does the "E" stand for in ER70S-6?

• A. Electrode
• B. Element
• C. Energy
• D. Electrolyte

Answer: (A)

In welding filler-metal designations, the letter indicates the type of filler used to deposit weld metal. The E in this code stands for electrode, showing that this material is a welding electrode used as the filler metal. The rest of the designation—70, S, and the dash 6—provide strength, metal type, and position/chemistry details, but the first character is what tells you it’s an electrode. The other options (element, energy, electrolyte) aren’t used to identify welding filler metals, so they don’t fit here.

In welding filler-metal designations, the letter indicates the type of filler used to deposit weld metal. The E in this code stands for electrode, showing that this material is a welding electrode used as the filler metal. The rest of the designation—70, S, and the dash 6—provide strength, metal type, and position/chemistry details, but the first character is what tells you it’s an electrode. The other options (element, energy, electrolyte) aren’t used to identify welding filler metals, so they don’t fit here.