AWS (American Welding Society) — What It Is and Why It Matters
AWS (American Welding Society) is the primary standards-developing organization for the welding industry in the United States. Founded in 1919, AWS publishes welding codes (like AWS D1.1 for structural steel), filler metal specifications, qualification standards, safety guidelines, and educational resources used throughout the welding industry worldwide.
AWS codes and standards are referenced in building codes, engineering specifications, and contractual documents across construction, manufacturing, aerospace, and energy industries. When a project specification says "welding per AWS D1.1," it means every aspect of the welding — procedures, welder qualifications, inspection criteria, and acceptance standards — must comply with that code.
AWS also administers the CWI (Certified Welding Inspector) program, the CWSR (Certified Welding Sales Representative) program, educational scholarships, and the annual FABTECH exposition. Membership provides access to technical resources, networking, and continuing education opportunities for welding professionals at all career stages.
Frequently Asked Questions
What is the most important AWS code?
AWS D1.1 (Structural Welding Code — Steel) is the most widely used AWS code. It governs the welding of structural steel in buildings, bridges, and other structures. Other major AWS codes include D1.2 (aluminum), D1.3 (sheet steel), D1.6 (stainless), and D17.1 (aerospace fusion welding).
Do I need AWS certification to weld?
AWS certification is not legally required to perform welding in most situations. However, employers in structural, pressure vessel, and code-governed industries require welder qualification testing per AWS or ASME codes. CWI certification is required for welding inspection roles on code work.