The research is intended to compare the type of welding wire is used to connect to the. AISI304 stainless steel, carbon steel with AISI1015 and study the structure and properties of butt joints to commas. There are factors that are studied in this research are (1) the type of welding wire, E307.E308 E309, and 312 E (2) Power use in the 80, 90100,110 and 120 Ampere, the trial results in education comma structure characteristics. I found that when I add a stream of fire at the butt joints of welded connection will result in damage. As a result, lower power absorption values. By impact test Hardness test and test the metal structure of the work piece concluded that welding wire with the precious flow of 100 Ampere, E307 absorb maximum energy.
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