Sus is the representative letter of Japanese stainless steel standard, sus3 16, which means 3 16 stainless steel conforming to Japanese standard.

The meaning of SUS3 16: SUS is the code name of stainless steel in Japanese JIS standard. SUS is a Japanese material standard, and 3 16 stainless steel is a stainless steel brand produced according to American ASTM standard. 3 16 is equivalent to our country's 0Cr 17Ni 12Mo2 stainless steel, and Japan also quoted the name of the United States, calling it SUS3 16.

Other classifications of extended information stainless steel:

1, duplex stainless steel

Duplex stainless steel refers to stainless steel with about 50% ferrite and 50% austenite respectively. Generally, the minority phase content needs to reach at least 30%. In the case of low C content, Cr content is 18%~28%, and Ni content is 3%~ 10%. Some steels also contain alloying elements, such as molybdenum, copper, niobium, titanium and nitrogen.

This steel has the characteristics of both austenitic and ferritic stainless steel. Compared with ferritic steel, it has higher plasticity and toughness, no brittleness at room temperature, significantly improved intergranular corrosion resistance and weldability, and maintained the brittleness, high thermal conductivity and superplasticity of ferritic stainless steel at 475℃.

Compared with austenitic stainless steel, it has high strength and obviously improved intergranular corrosion resistance and chloride stress corrosion resistance. Duplex stainless steel has excellent pitting corrosion resistance and is also a nickel-saving stainless steel.

2, precipitation hardening stainless steel

A precipitate phase is formed in the solution. The matrix structure of precipitation hardening stainless steel can be martensite or austenite, depending on the composition and treatment process. Age-hardening martensitic stainless steel has the characteristics of good corrosion resistance and simple heat treatment.

Baidu encyclopedia -SUS3 16