The product of the production and improvement process of aluminium always involve welding process. In welding application, aluminium is a difficult material to weld because of its characteristics which are easily oxidized, the heat type of the material and the high capacity to transfer heat. The liquid welding used recently on aluminium are Oxy Acetylene and Tungstan Inert Gas (TIG) welding. The purpose of this research was to determine the result of 5083 alumunium welding with tungstan inert gas (TIG), and Oxy Acetylene welding, the result of welding joints were than tested using the ASTM B 557M standard, Vickers hardness test, and micro-structure test. Based on the tensil test result, vickers hardness test, and micro-structure test of tungstan inert gas (TIG) welding have better mechanical properties and physical properties, with an average maximum value of 106.29 Mpa, and average of hardness in welding metal 65.6 VHN tungstan inert gas (TIG) welding smaller than the average hardness of Oxy Acetylene 97.3 VHN welds, which is the consistent hardness value of tungstan inert gas (TIG) welds because it has a current arrangement that affects heat and argon comparable protective gases, which affect the mechanical properties and physical properties of aluminium welding.