What does the '70' in E70T-X indicate?

What does the '70' in E70T-X indicate?

• A. Strength of the weld deposit in 10,000 psi and welding position
• B. Coating type
• C. Electrode diameter
• D. Current to be used

Answer: (A)

The number is about the strength of the weld metal. In this electrode designation, the digits after the E indicate the minimum tensile strength of the deposited weld, measured in ksi (thousands of psi). So 70 means a minimum of 70 ksi (about 70,000 psi, roughly 483 MPa). This value tells you how strong the weld metal is expected to be when welded with this electrode. It does not specify coating type, electrode diameter, or welding current. The position and other performance details come from the rest of the designation, not from the 70 itself.

The number is about the strength of the weld metal. In this electrode designation, the digits after the E indicate the minimum tensile strength of the deposited weld, measured in ksi (thousands of psi). So 70 means a minimum of 70 ksi (about 70,000 psi, roughly 483 MPa). This value tells you how strong the weld metal is expected to be when welded with this electrode. It does not specify coating type, electrode diameter, or welding current. The position and other performance details come from the rest of the designation, not from the 70 itself.