Impact of filler and cooling conditions on the corrosion characteristics of GTAW welds in AISI 304 stainless steel Available to Purchase

Tanks as fluid storage is considered very efficient and practical, so they are used more often. In making tanks, the welding process for connecting them cannot be separated. Welding was done using GTAW (Gas et al.) welding with argon protective gas. The input parameters varied included distilled water cooling media, SAE 20w-40 oil, air and filler rod ER308, ER308L, ER309L, corrosion rate testing using the weight loss method ( weight loss) ASTM G31-72 standard and microstructure testing using a BX53M metallurgy microscope with reference standard E407-07 (Practice standard for Microetching Metal and Alloys) with 100 times and 200 times magnification. The results of the research showed that the highest corrosion rate was in specimen code A1 with variations in the distilled water cooling media and ER308 filler rod with a corrosion rate value of 0.0875 mm/y, and the lowest corrosion rate was obtained in specimens with specimen code B3 with variations in the SAE 20W-40 of oil cooling media, and filler rod ER309L with a corrosion rate test value of 0.0367 mm/y. The ER309L filler rod and SAE 20W-40 oil cooling media are variations that have the best corrosion resistance of all the variations used in this research.