What does the "71" in E71T-X indicate?

What does the "71" in E71T-X indicate?

• A. An all position electrode with tensile strength of 70 KSI
• B. A 71% carbon content electrode
• C. A tubular electrode
• D. A low-hydrogen electrode

Answer: (A)

The number 71 in this designation tells you the weld metal’s strength, not its chemistry or position. In AWS electrode designations, the digits after the E indicate the minimum tensile strength of the weld metal, in ksi. So 71 corresponds to about 70 ksi of tensile strength. The other parts of the code tell you more about the electrode form and usage (for example, the T shows it’s a tubular electrode), but the 71 itself is all about the tensile strength. Therefore, the meaning you’d take from the 71 is that the electrode is rated around 70 ksi in strength. The all-position capability, if present, is indicated elsewhere in the designation, not by the 71 digits alone.

The number 71 in this designation tells you the weld metal’s strength, not its chemistry or position. In AWS electrode designations, the digits after the E indicate the minimum tensile strength of the weld metal, in ksi. So 71 corresponds to about 70 ksi of tensile strength. The other parts of the code tell you more about the electrode form and usage (for example, the T shows it’s a tubular electrode), but the 71 itself is all about the tensile strength. Therefore, the meaning you’d take from the 71 is that the electrode is rated around 70 ksi in strength. The all-position capability, if present, is indicated elsewhere in the designation, not by the 71 digits alone.