The main alloying element is nickel

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Nickel stainless steel: , which has excellent corrosion resistance and heat resistance, and is often used in the production of chemical equipment and nuclear industry.

Molybdenum stainless steel: the main alloying element is molybdenum, has good corrosion resistance and oxidation resistance, suitable for sulfuric, nitric and other strong acidic environments.

c. Classification by use
1) Stainless steel for architectural decoration: mainly used for interior and exterior decoration and architectural structure, with good weather resistance and aesthetics.

2) Food grade stainless steel: meets sanitary standards, widely used in food industry, catering and other fields.

3) Stainless steel: with antibacterial properties sri lanka number data and good biocompatibility, it is often used in the production of medical equipment such as surgical instruments and artificial joints.

d. Classification by surface
1) NO.1 Hot rolled, annealing, descaling after hot rolling to a specified thickness, then annealing, descaling. Generally used for industrial purposes, heat resistance, corrosion resistance, and the use of low surface smoothness requirements.

2) NO.2B cold rolled, bright surface is usually produced in the same way as 2D, but is finally finished with a polishing roller. This is what is commonly called a cold rolled surface, which is suitable for all purposes except deep drawing (difficult), and this surface is much easier to polish than NO.1 and NO.2D.