1,professional and experienced manufacturer 2,excellent quality, price and services Stainless steel: Y1Cr18Ni9 Standard: GB/T 1220-1992 The characteristics and scope of application:Improve the cutting, burning resistant.The most suitable for automatic lathe.Bolt, nut. The chemical composition of:C: less than 0.15 of carbonSilicon Si: ≤ 1Manganese: Mn ≤ 2S: S ≤ 0.15P: P ≤ 0.20Chromium, Cr:17.00 ~ ...