Welding Filler Metal Specifications

Welding Rods, Electrodes, and Filler Metals are organized into a two tier system of Specification + Classification.

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FILLER METAL SPECIFICATION

Welding Filler Metal Specifications group filler metals into similar material types and welding processes. The specification contains many details such as the official classification designators and the testing required to certify the filler metal to that specification.

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Filler Metal Specification Appearance

Within AWS the specification appears as A5.XX

Within ASME the specification appears as SFA5.XX

• "S" indicates the specification has been adopted by ASME (Similar to the ASTM base metal practice)
• "F" indicates the specification covers Filler metals
• "A" indicates the specification was adopted from AWS

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Filler Metal Specification by Material and Weld Process

The following table provides the details for the specifications that apply to the combination of the standard material groupings and the given weld process.

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Filler Metal Specification Chart

The following chart provides the comprehensive list of the specifications detailed within ASME Section II Part C.

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Filler Metal listed in QW-404 on ASME WPS

The following is an excerpt from the filler metal portion of a welding procedure (WPS) detailing how the Specification, Classification, F-Number, A-Number, and UNS Number are associated.

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