In the designation ER70S-6, what does the E represent?

In the designation ER70S-6, what does the E represent?

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

Answer: (A)

The letter E marks the material as an electrode. In AWS filler-metal designations, the prefix indicates that this is a consumable welding filler metal used to create the weld, melted into the joint. So in ER70S-6, the E (within ER) tells you you’re dealing with an electrode/filler metal, and the rest of the code describes the specific properties and form (solid wire, roughly 70 ksi tensile strength, etc.). The other letters and numbers are about the weld metal’s characteristics, but the key point is that E stands for electrode.

The letter E marks the material as an electrode. In AWS filler-metal designations, the prefix indicates that this is a consumable welding filler metal used to create the weld, melted into the joint. So in ER70S-6, the E (within ER) tells you you’re dealing with an electrode/filler metal, and the rest of the code describes the specific properties and form (solid wire, roughly 70 ksi tensile strength, etc.). The other letters and numbers are about the weld metal’s characteristics, but the key point is that E stands for electrode.