... :2008/SGS test report/ROHS report Stainless steel ball Name: Stainless steel ballsMaterial: AISI304,316,420C,440CSize: 0. ... ,nail polish,air condition,medical material,automotive fittings.Material Composition % MaterialCSiMnPSNiCrMoAISI3040.07 max1.0 max2.0 max0.045 ... ).OUR MAIN PRODUCTS:Stainless steel ball:AISI302,304,316,420,4440CBearing steel balls:AISIE52100Carbon steel balls:AISI1010,1015,1045, ...