Lincoln Electric manual D1.8 Seismic Supplement Welding Manual

D1.8 Seismic Supplement Welding Manual

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The requirements for Demand Critical welds are the most rigorous. Filler metals that meet D1.8 requirements for Demand Critical welds will automatically meet all the requirements for welds that are on the SFRS but not Demand Critical. For consistency and simplicity, Lincoln Electric suggests that filler metals that meet the requirements for Demand Critical be used on all welds made on the SFRS. This simple practice will eliminate the possibility of using an unacceptable product on a Demand Critical weld.

Lincoln Electric filler metals for D1.8 Demand Critical welds all meet the following requirements:

AWS A5 yield, tensile, elongation and CVN requirements for classification AISC Seismic Provision requirements of 20 ft•lbf @ -20°F.

D1.8 Annex A high/low heat input testing requirements (40 ft•lbf @ 70°F), or A5.20 optional “-D” designator requirements, or are exempted from high/low heat input testing.

D1.8 diffusible hydrogen limits (applicable to FCAW-G, FCAW-S, GMAW, GMAW-C and SAW)

For FCAW-G and FCAW-S, D1.8 extended exposure time of at least one week when tested in accordance with Annex E. Some products have been tested to time periods exceeding one week. See applicable exposure test results.

For FCAW-G and FCAW-S, ProTech® foil bag protective packaging (D1.8 clause 6.4.1). For suggested FCAW-S, common intermix combinations (D1.8 Annex B).

Lincoln Electric additionally produces a variety of filler metals meeting D1.8 requirements where an 80 ksi tensile strength deposit is required. Contact your Lincoln Electric technical representative for additional information on these products.

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