What does the -1 suffix represent in the E71T-1 electrode designation?

What does the -1 suffix represent in the E71T-1 electrode designation?

• A. Chemical composition (number = carbon steel, letter and number = low-alloy steel)
• B. Weld position
• C. Coating type
• D. Electrical rating

Answer: (A)

The -1 suffix is about where you can weld with that electrode. In this designation system, the dash and the following number indicate the welding positions the electrode is approved for. For E71T-1, the -1 means it is suitable for all positions (flat, horizontal, vertical, overhead). It does not tell you about chemical composition, coating type, or electrical rating; those aspects are indicated elsewhere in the code (for example, the E, the 71, and the T convey strength, tubular flux-cored nature, etc.). So the suffix is a position indicator, not a measure of composition or other electrical or coating properties.

The -1 suffix is about where you can weld with that electrode. In this designation system, the dash and the following number indicate the welding positions the electrode is approved for. For E71T-1, the -1 means it is suitable for all positions (flat, horizontal, vertical, overhead). It does not tell you about chemical composition, coating type, or electrical rating; those aspects are indicated elsewhere in the code (for example, the E, the 71, and the T convey strength, tubular flux-cored nature, etc.). So the suffix is a position indicator, not a measure of composition or other electrical or coating properties.