The -1 suffix in E71T-1 indicates chemical composition; which encoding represents carbon steel?

The -1 suffix in E71T-1 indicates chemical composition; which encoding represents carbon steel?

• A. Number
• B. Letter
• C. Mixed
• D. None

Answer: (A)

In this welding classification, the suffix after the main portion of the code is used to communicate the weld-metal chemistry. When that suffix is a number, it indicates the weld metal chemistry falls into the numeric category associated with carbon steel. Letters are used to designate other alloy families (like certain stainless or nickel-based chemistries). Since the suffix in the given designation is numeric, it signals carbon-steel chemistry rather than a different alloy type. So the encoding representing carbon steel here is a numeric code.

In this welding classification, the suffix after the main portion of the code is used to communicate the weld-metal chemistry. When that suffix is a number, it indicates the weld metal chemistry falls into the numeric category associated with carbon steel. Letters are used to designate other alloy families (like certain stainless or nickel-based chemistries). Since the suffix in the given designation is numeric, it signals carbon-steel chemistry rather than a different alloy type. So the encoding representing carbon steel here is a numeric code.