304 stainless steel is the most widely used stainless steel, heat steel.

Used in food production equipment, general chemical equipment, nuclear power and so on.  304 stainless steel Chemical composition specification C Si Mn P S Cr ni (ni) mo stainless steel SUS304 density 7.93 g/cm 3 tensile strength σb (MPa) ≥520, conditional yield strength σ0.2 (MPa) ≥205, elongation δ5 (%) ≥40, section shrinkage rate ψ (%) ≥50, hardness: The most important element of ≤187hb;≤90hrb;≤200hv304 is NI,CR, but it is not limited to these two elements. The specific requirements are stipulated by the product standard. Industry commonly judged that as long as the content of NI is greater than 8%,CR content is greater than 18%, it can be considered to be 304 stainless steel.   

    This is why the industry will call this type of stainless steel 18/8 stainless steel reasons. 304 stainless steel chemical grade 06cr19ni10 old brand (0Cr18Ni9) containing chromium 19%, containing nickel 8-10%.