... :ISO 9001:2008/SGS test report/ROHS report Stainless steel ball Name: Stainless steel ballsMaterial: AISI304,316,420C,440CSize: 0. ... to AISI 302/304/304L series, but they can be anti-magnetic and, above all, the addition of molybdenum offers greater ... industries (valves, pumps and bearings).OUR MAIN PRODUCTS:Stainless steel ball:AISI302,304,316,420,4440CBearing steel balls:AISIE52100Carbon steel balls ...