There is no 304 stainless steel in the national standard, 304 is a Japanese material standard and SUS304 is an American standard. 0Cr19Ni9 (0Cr18Ni9) stainless steel in the national standard is equivalent to 304 stainless steel.
304 stainless steel is a common material in stainless steel, with a density of 7.93 g/cm3. Also known as 18/8 stainless steel in the industry. High temperature resistance of 800 degrees, good processability and high toughness, widely used in industry, furniture decoration industry and food and medical industry.
Common marking methods in the market are 06Cr 19Ni 10 and SUS304, in which 06Cr 19Ni 10 generally stands for national standard production, ASTM standard production and SUS 304 stands for Japanese standard production.
304 is a general-purpose stainless steel, which is widely used to manufacture equipment and parts that require good comprehensive performance (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a stainless steel brand produced according to American ASTM standard.