Chemical composition of chromium-nickel-manganese-nitrogen austenitic stainless steel 1Cr18Ni5Mn8N (AISI1202)

Chemical Composition of 1Cr18Ni5Mn8N (AISI 1202) Austenitic Stainless Steel

1Cr18Ni5Mn8N (AISI 1202) stainless steel is an austenitic stainless steel reinforced with chromium, nickel, and manganese. It is highly corrosion resistant and is often used for components in medical and dental applications, as well as in food processing, furniture and fixtures, architectural components, fuel cells, and other specialized industrial applications. The following table provides its chemical composition.

Element %

Carbon (C) 0.10-0.15

Manganese (Mn) 7.00-9.00

Phosphorus (P) 0.30 max

Sulfur (S) 0.4 max

Silicon (Si) 0.40 max

Chromium (Cr) 17.00-19.00

Nickel (Ni) 4.50-6.50

Molybdenum (Mo) 0.08 max

Aluminum (Al) 0.20 max

Nitrogen (N) 0.10 max

Iron (Fe) Balance

The combination of chromium, nickel, and manganese strengthens and enhances the corrosion resistance of 1Cr18Ni5Mn8N (AISI 1202) austenitic stainless steel. The high nickel content helps to resist oxidation and scaling, while the presence of chromium ensures that a protective oxide film is formed on the surface and helps minimize the risk of corrosion. The presence of manganese also increases resistance to localized corrosion such as pitting and crevice corrosion.

1Cr18Ni5Mn8N (AISI 1202) austenitic stainless steel can be used in a wide range of applications due to its excellent corrosion resistance. It is particularly well suited for use in medical and dental applications, as well as food processing, furniture and fixtures, and architectural components. The good formability, ease of fabrication, and weldability of this alloy make it attractive for specialized industrial applications such as fuel cells.

AISI 1202 (1Cr18Ni5Mn8N) stainless steel is a grade of stainless steel which has corrosion resistance properties due to its chemical composition. It is an austenitic stainless steel, which means it is iron-alloyed with 18% chromium, 5% nickel, 8% manganese and nitrogen. This combination gives the steel strong anti-corrosion properties, making it an ideal choice for applications such as medical tools, automotive parts, cookware, and many other uses.

AISI 1202 stainless steel has a composition of approximately 18-20% chromium, 5-7% nickel, 8-11% manganese, 0.1-0.25% phosphorus, 0.03% sulfur and 0.005-0.20% nitrogen (in various forms such as nitrogen, nitrogen oxide, and nitride). The chromium content of this steel gives it its excellent corrosion resistance properties, allowing it to be used in medical tools, automotive parts, and cookware.

The nickel content of AISI 1202 stainless steel provides good strength and ductility, while the manganese content gives it increased hardness, resilience and wear-resistance. Phosphorus and sulfur are also present in trace amounts, and are beneficial in that they enhance the steel’s corrosion resistance. The nitrogen content gives the steel its nitrogen oxide form, which is helpful in further enhancing its corrosion resistance properties.

AISI 1202 stainless steel is often used for applications such as medical tools, automotive parts, and cookware. Due to its excellent corrosion resistance, it is also often used in applications such as food processing plants and in applications requiring high cleanliness, such as food and beverage manufacturing, medical and laboratory equipment, and medical implants. It has also been used in the pharmaceutical industry due to its high resistance to organic acids.

AISI 1202 stainless steel is typically produced via hot and cold rolling and annealing processes. In hot rolling, slabs of the material are heated and then passed through a series of rollers to create hot-rolled sheets. Cold rolling is used to create cold-rolled sheets with extra strength and dimensional accuracy. Finally, annealing is used to increase the steel’s strength and ductility for better formability.

In conclusion, AISI 1202 stainless steel is an austenitic stainless steel with excellent corrosion resistance properties, due to its chemical composition of 18-20% chromium, 5-7% nickel, 8-11% manganese, 0.1-0.25% phosphorus, 0.03% sulfur and 0.005-0.20% nitrogen. It is an excellent choice for many applications such as medical tools, automotive parts, cookware and pharmaceutical industry due to its excellent corrosion resistance. It is produced via hot and cold rolling, and annealing.