ANALISIS PENGARUH PENGGUNAAN ELEKTRODA SMAW E316L-16 PADA PENGELASAN GTAW PLAT STAINLESS STELL 316L TERHADAP KUAT TARIK, NILAI KEKERASAN, KOMPOSISI KIMIA BESERTA METALLOGRAPHY

Abstract

The fabrication and manufacturing industries will always be related to construction, all
steel construction is inseparable from the metal joining process, the method most often found in steel
construction is welding. However,due to limited time for repairs by the company, the welder uses the
SMAW E316L-16 electrode which has the flux removed on the hotpass as a substitute for GTAW
ER316L filler metal to maximize time efficiency. Tests carried out in this study were hardness test,
tensile test, chemical composition test and microstructure test. From the test results obtained, it was
shown that the microstructure obtained from both specimens A and B did not have too significant a
phase difference, both of them formed ferrite and austenite phases. The highest hardness values for
base metal, fusion line and weld metal were found in specimen A which was welded using E316L-16
electrodes without flux with hardness values of 214.4 HVN, 233.4 HVN and 236.4 HVN. In the tensile
test, the highest tensile strength was found in specimen A with a tensile strength of 607.55 MPa. In
the results of the chemical composition there are several changes in the chemical composition due to
the mixing of the weld metal and base metal.