What is the AWS specification number for GMAW carbon steel electrodes?

The AWS specification number for GMAW (Gas Metal Arc Welding) carbon steel electrodes is indeed A5.18. This specification outlines the requirements and classifications for solid and flux-cored carbon steel electrodes used in GMAW processes. Understanding this specification is essential for ensuring the correct selection of materials for welding applications, as it provides critical information on the composition, mechanical properties, and intended use of the electrodes.

The other specifications mentioned do not pertain to GMAW carbon steel electrodes. For instance, A5.20 addresses the requirements for GMAW electrodes for stainless steel, while A5.25 covers specifications for electroslag weld metal. A5.30 relates to submerged arc welding. Each specification corresponds to different materials and processes, demonstrating the importance of using the appropriate code for specific welding methods and materials in structural applications.