The ER70 electrode rod has a tensile strength of at least how many psi?

The ER70 electrode rod has a tensile strength of at least how many psi?

• A. 60000
• B. 70000
• C. 80000
• D. 90000

Answer: (B)

In GMAW filler-metal designations, the numbers describe the minimum tensile strength in ksi. The 70 in ER70 means a minimum tensile strength of 70 ksi, which is 70,000 psi. So the electrode rod is specified to be at least 70,000 psi in tensile strength. This strength level is well-suited for mild steel applications common in collision repair, offering a good balance of strength and ductility. If the designation were different (for example, ER60 or ER80), those would correspond to 60,000 or 80,000 psi, not 70,000.

In GMAW filler-metal designations, the numbers describe the minimum tensile strength in ksi. The 70 in ER70 means a minimum tensile strength of 70 ksi, which is 70,000 psi. So the electrode rod is specified to be at least 70,000 psi in tensile strength. This strength level is well-suited for mild steel applications common in collision repair, offering a good balance of strength and ductility. If the designation were different (for example, ER60 or ER80), those would correspond to 60,000 or 80,000 psi, not 70,000.