Filler Metal Tensile Strength Matching Calculator

Match filler metal tensile strength to base metal per AWS D1.1 matching/undermatching criteria and AISC requirements

Input Parameters

Results

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Required Min Filler FEXX
ksi
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Recommended AWS Class
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Strength Match Ratio
%
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Match Type
Note: Per AWS D1.1 and AISC 360. CJP groove welds carrying tension require matching filler. Fillet welds and PJP groove welds can use undermatching filler metal.

Reference

AWS D1.1 Table 3.1: CJP groove welds subject to tension require matching filler metal Fillet welds: FEXX >= 0.6 * Fu (undermatching permitted) AISC 360: Filler metal one strength class below base metal acceptable for fillets FEXX = Filler metal classification strength (e.g., E70XX = 70 ksi)