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 grade of stainless steel produced in accordance with the American ASTM standard.

In the solid solution state, the tensile strength of 304 stainless steel is about 550MPa, and the hardness is about 150-160HB. 304 cannot be strengthened by heat treatment, but can only be strengthened by cold working. However, after cold working, while the strength is improved, its plasticity, toughness and corrosion resistance Performance will drop drastically.

The corrosion resistance of 304 stainless steel is better than that of 430 stainless steel, but the price is cheaper than 316 stainless steel, so it is widely used in life, such as some high-end stainless steel tableware, outdoor stainless steel railings, etc. [1] Although this type of stainless steel is very common in China, the name “304 stainless steel” comes from the United States. Many people think that 304 stainless steel is a type designation in Japan, but strictly speaking, the official name of 304 stainless steel in Japan is “SUS304″. 304 is a kind of universal stainless steel.

It is widely used in industries that require good comprehensive performance, such as: CNC lathes, stamping, CNC, optics, aviation, mechanical equipment, mold manufacturing, electronics, precision instruments, transportation, textiles, Electromechanical, metallurgy, military, ship, chemical industry, hardware manufacturing, mobile phone industry, medical industry, etc.

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