Description
Usually called stainless steel. Representative properties include 13 chromium steel, 18-8 chromium nickel steel and other high alloy steels. From the perspective of metallography, because stainless steel contains chromium, a very thin chromium film is formed on the surface, which is separated from the oxygen invaded in the steel and plays a role in corrosion resistance. In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 12% chromium. 304 is a universal stainless steel, which is widely used to make equipment and parts requiring good comprehensive performance (corrosion resistance and formability). 304 stainless steel is a brand of stainless steel produced according to American ASTM standards. 304 is equivalent to 0Cr19Ni9 (0Cr18Ni9) stainless steel in China. 304 contains 19% chromium and 9% nickel. 304 is the most widely used stainless steel and heat-resistant steel. For food production equipment, Xitong chemical equipment, nuclear energy, etc. chemical composition specification of 304 stainless steel C Si Mn p s Cr Ni (nickel) Mo SUS304 ≤ 0.08 ≤ 1.00 ≤ 2.00 ≤ 0.05 ≤ 0.03 18.00-20.00 8.25 ~ 10.50