Austenitic antibiotic stainless steel and method for manufacturing same

The invention discloses an austenitic antimicrobial stainless steel and the manufacturing method thereof. The stainless steel contains an Ag-Cu binary master alloy with a weight percentage of 0.10 to 4.0 percent and the weight percentage (wt %) for the rest chemical components are as follows: C less than or equal to 0.08 percent, Si less than or equal to 1.0 percent, Mn less than or equal to 2.0 percent, P less than or equal to 0.04 percent, S less than or equal to 0.03 percent, Ni 7.0 to 15.0 percent, Cr 17.0 to 20.0 percent, Mo less than or equal to 4.0 percent, N less than or equal to 0.15 percent and the rest are Fe and unavoidable impurities. The method of manufacturing the antimicrobial stainless steel is as follows: the Ag element and the Cu element, of which Ag takes up 1.0 to 40 percent, are smelted to be a master alloy and then added to the antimicrobial stainless steel material to be smelted. The steel has the advantages of simple and effective smelting technique, excellent mechanical property, excellent corrosion resistance and excellent antibacterial property, can be made into shapes of various types applicable to kitchens, household appliances, medical apparatuses and so on.