Final answer:
Filler metals used in welding are classified by the American Welding Society (AWS) based on their properties and applications.
Step-by-step explanation:
The filler metals used in welding processes are classified by various societies depending on their purpose, properties, and composition. The organization responsible for defining these classifications is the American Welding Society (AWS). Under the AWS, these filler metals are classified based on their mechanical properties, chemical composition, and intended applications. A standardized numbering system is used to represent these classifications.
For instance, AWS A5.1/A5.1M:2020 specification is for carbon steel electrodes for shielded metal arc welding. Different types of filler metals, electrodes, and rods are classified by this system, each designed for use with a specific type of welding process or for welding certain types of metals.
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