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304 and 440 stainless steel
Jan 19, 2018

SUS 304 is belong to austenitic stainless steel, 440 is one kind of ferritic stainless steel. The difference between this two are in many respects, such as chemical components and application. The anti-corrosion property of 304 stainless steel is better than 440, of course the price is higher.

304 stainless steel is one of the most popular material, the density is 7.98g/cm3, and in this industry also called 18/8 stainless steel. It can endure the high temperature of 800℃, and it with good mechanical working properties and toughness. Widely use in industry, home decoration, food industry, medical industry.

The regular mark method of 304 stainless steel is 00Cr19Ni10, SUS304. 00Cr19Ni10 normally means produce according to GB and ASTM, SUS 304 means base on JIS standard.

304 stainless steel widely used in industries with high combination property requirement, such as equipment and parts. The Chromium have to be more than 18% and Nickel more than 8% to ensure the anti-rust characteristic. 


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