What does the '1' in the FCAW classification E71T-1 signify?

What does the '1' in the FCAW classification E71T-1 signify?

• A. All Position
• B. First Grade
• C. Hydrogen Level
• D. Flux Type

Answer: (A)

In this FCAW marking, the digits after the dash specify how the electrode can be used in different welding positions. The “1” indicates all-position capability, meaning you can weld in flat, horizontal, vertical, and overhead positions with this electrode. The rest of the code (E for electrode, 71 for the approximate tensile strength, T for flux-cored tubular) conveys other properties, but the final digit specifically tells you the position you can weld in. Hydrogen level or flux type aren’t determined by this ending digit, so those factors come from the other parts of the classification or accompanying specifications.

In this FCAW marking, the digits after the dash specify how the electrode can be used in different welding positions. The “1” indicates all-position capability, meaning you can weld in flat, horizontal, vertical, and overhead positions with this electrode. The rest of the code (E for electrode, 71 for the approximate tensile strength, T for flux-cored tubular) conveys other properties, but the final digit specifically tells you the position you can weld in. Hydrogen level or flux type aren’t determined by this ending digit, so those factors come from the other parts of the classification or accompanying specifications.