Material:AISI304,316,420C,440C Size:0.8mm-150mm Grade: G10-G1000 Standard:ISO ... report Stainless steel ball Name: Stainless steel ballsMaterial: AISI304,316,420C,440CSize: 0.8mm-150mmGrade: G10-G1000Hardness: AISI304 and AISI316 are ... element bearings, valve seats, casters, ball bearings and valve parts.420C is a martensitic stainless steel with 12% Chromium which is ...