Main features and uses of austenitic stainless steel S30210 1Cr18Ni9

AISI S30210 Austenitic Stainless Steel

AISI S30210 is a ferritic-austenitic stainless steel containing 1% chromium (Cr) and 9% nickel (Ni). In most applications, this stainless steel is the cost effective alternative to the highly corrosion resistant and durability of austenitic stainless steels.

Chemical Composition

The chemical composition of AISI S30210 steel contains up to 18% chromium combined with 8-9% nickel. Besides the chromium and nickel, other elements such as carbon and molybdenum are also present in this alloy, although their content is significantly lower compared to the others. The following table lists the typical chemical composition of AISI S30210 steel.

Element Content (% by mass)

Carbon (C) 0.03 - 0.07

Manganese (Mn) 1 – 2.5

Silicon (Si) 0.5 – 1.5

Phosphorus (P) 0.04 max

Sulfur (S) 0.03 max

Chromium (Cr) 17 – 18

Nickel (Ni) 8 – 9

Molybdenum (Mo) 0.5 – 1

Physical Properties

AISI S30210 has superior strength and hardness, making it a great choice for industrial applications that require superior wear resistance. Its low-alloy content enables it to exhibit good corrosion resistance in certain chemical environments. It also has excellent weldability and formability. Its outstanding physical characteristics are listed below.

Tensile Strength: 700-950 MPa

Yield Strength: 240-420 MPa

Elongation: 30-50%

Hardness: Rockwell C 20-33

Applications

Due to its excellent physical and mechanical properties, AISI S30210 is well suited for several industrial applications. It is widely used for valve parts and kitchen cutting boards in the food processing industry. It is also used for cutting tools and surgical scissors in medical applications. Its superior wear and tear resistance makes it a great choice for hand tools, machine tools, and scissor blades. Additionally, it can also be utilized in chemical processing environments due to its excellent corrosion resistance.

Austenite stainless steel S30210 1Cr18Ni9, similar to S20200 1Cr18Ni9, is a variant of grade 304 stainless steel. This grade of stainless steel contains a high amount of chromium and nickel and ensures a good corrosion resistance and a strong mechanical properties. It contains a low carbon content and therefore can be used in many corrosive environments.

The main characteristics of S30210 1Cr18Ni9 austenite stainless steel are its excellent corrosion resistance, its high what strength and its high ductility. It is also resistant to oxidation and to creep deformation under high temperatures. Because of its excellent corrosion resistance, it is widely used in many corrosive environments, such as offshore and marine applications, paper and pulp processing, food and beverage manufacturing and many more.

The maximum room temperature mechanical properties of S30210 1Cr18Ni9 austenite stainless steel are as follows: Ultimate Tensile Strength (N/mm2): 490-1000; Yield Strength (N/mm2): 420-660; Elongation (A5): 25-45%. It is important to understand that these properties may vary with different manufacturing processes.

This grade of stainless steel can be subjected to almost any welding process, and welding strength can be obtained by post-weld heat treatments. Its cold working and hot working abilities are good, so it can be rolled and drawn into most shapes, making it a very suitable steel for a wide range of applications.

When it is exposed to temperatures between 760°C and 1150°C, S30210 1Cr18Ni9 steel will acquire an excellent wear resistance, something that makes it suitable for heat-treated components. As this steel can be processed easily, it is widely used in both industrial and aerospace applications, such as for turbine blades, engine fan blades, and valves.

In conclusion, austenite stainless steel S30210 1Cr18Ni9 is an excellent choice for many industries, thanks to its easy fabrication, good wear and corrosion resistance and high strength. It is widely used in all sorts of applications, from paper and pulp processing, to food and beverage manufacturing, to aerospace components.