304 stainless steel is a very common stainless steel, the industry is also called 18/8 stainless steel. Its corrosion resistance is better than 430 stainless steel, but the price is cheaper than 316 stainless steel, so it is widely used in life, for example, in some high-grade stainless steel tableware, and outdoor stainless steel baluster.

Although 304 stainless steel is very common in China, the name "304 stainless steel" comes from the United States. Many people think 304 stainless steel is a type of Japanese name, but strictly speaking, Japan's official name for 304 stainless steel is "SUS304".

304 stainless steel is universal stainless steel, it is widely used to make equipment and parts requiring good comprehensive performance (corrosion resistance and formability). To maintain the corrosion resistance inherent in stainless steel, the steel must contain more than 16% chromium and 8% nickel. 304 stainless steel is a brand of stainless steel produced in accordance with ASTM standards in the United States. 304 is equivalent to China's 0Cr18Ni9 stainless steel.

Chemical composition of 304 stainless steel

The 304 stainless steel chemical-grade is 06Cr19Ni10 (old grade -0Cr18Ni9) containing 19% chromium and 8-10% nickel.

C Si Mn P S Cr Ni Mo

SUS304 Chemical composition ≤0.08 ≤1.00 ≤2.00 ≤0.05 ≤0.03 18.00-20.00 8.00-10.50

The density of 304 stainless steel

The density of stainless steel SUS304 is 7.93 g/cm3

Standard of 304 stainless steel

For 304 stainless steel is a very important parameter, that directly determines its corrosion resistance, but also determines its value. The most important elements in 304 stainless steel are Ni and Cr, but not limited to these two elements. Specific requirements are specified in the product standard. The common judgment of the industry is that as long as the Ni content is greater than 8%, and the Cr content is greater than 18%, it can be considered 304 stainless steel. This is why the industry will call this type of stainless steel 18/8 stainless steel. In fact, the relevant product standards for 304 stainless steel have very clear provisions, and these product standards for different shapes of stainless steel and there are some differences.