| SFA Number | Common Name | Typical Application | | :--- | :--- | :--- | | SFA-5.1 | Carbon Steel Covered Electrodes | Pressure vessel shell welding | | SFA-5.4 | Stainless Steel Covered Electrodes | Corrosion-resistant overlay | | SFA-5.11 | Nickel & Alloy Covered Electrodes | Low-temperature or high-alloy service | | SFA-5.18 | Carbon Steel Solid Wires | GMAW (MIG) for boiler tubes | | SFA-5.20 | Carbon Steel Flux-Cored Electrodes | High-deposition welding |
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Every two years (odd-numbered years). 2023 is the latest. 2025 edition is scheduled for release July 1, 2025. | SFA Number | Common Name | Typical