Structural Chemistry & Crystallography Communication

Effect of Filler Metal Type on Tensile Properties of Dissimilar Welded Joint of 316 Stainless Steel and HSLA Steel

During the current period of covid-19 pandemic where
international flight/shipping are suspended, supply of
materials and equipmen for oil and gas industries might
have been hindere Stainless steel filler metal may be scarce
in the plant. Selection of filler metal is critical in dissimilar
metal welding involving stainless steel, this is due to
the weldability challenges associated with the technique.
As a result, it is necessary employ the available filler metal
for the progress of production/maintenance. Dissimilar
weld joints of 316 stainless steel/HSLA steel were joined
using ER316L-16 and E7018 filler metals. The joints were
subjected to tensile test and tensile values were determined,
computed, recorded and analysed.According to
the results obtained and analysis carried –out the weld
joint of E7018 filler metal presented higher ultimate tensile
strength of 498MPa than weld joint of ER316L-16
filler metal of ultimate tensile strength of 450MPa.Specimen
A indicated percent elongation of 15% while specimen
B 19.5%.The results were compared with related
previous works. Tensile strengths of specimen A and B
are superior to that of HSLA steel but inferior to 316SS
in as-received condition proving that the weld joints meet
requirement for engineering applications.

Author(s):

M.A.Hayatu

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