Austenitic 304 stainless steel
Austenitic 304 stainless steel is actually 304 stainless steel. Austenitic stainless steel refers to stainless steel with austenite structure at room temperature. When the steel contains about 18% Cr, 8% to 10% Ni, and about 0.1% C, it has a stable austenite structure.
Austenitic stainless steel is non-magnetic and has high toughness and plasticity, but has low strength and cannot be strengthened by phase change. It can only be strengthened by cold working. If S, Ca, Se, Te and other elements are added, it will have good machinability. Therefore, it is widely used in industry, furniture decoration industry, food and medical industry.
304 stainless steel
304 stainless steel is a general-purpose stainless steel, its main alloying elements are chromium (Cr), nickel (Ni) and carbon (C). The chromium content is about 18% - 20%, the nickel content is about 8% - 10.5%, and the carbon content is relatively low, generally not exceeding 0.08%. Chromium forms a dense chromium oxide protective film on the surface of stainless steel, giving it corrosion resistance. Nickel helps stabilize the austenite structure and improves the toughness, ductility and corrosion resistance of stainless steel.
Austenitic 304 stainless steel VS 304 stainless steel
1. Different characteristics
304 stainless steel is a common material among stainless steels. It is resistant to high temperatures of 800°C and has the characteristics of good processing performance and high toughness.
In addition to being resistant to corrosion in oxidizing acid media, austenitic stainless steel can also resist corrosion from sulfuric acid, phosphoric acid, formic acid, acetic acid, urea, etc. if it contains elements such as Mo and Cu.
2. Different uses
304 stainless steel is suitable for food processing, storage and transportation. It has good processing performance and weldability.
Austenitic stainless steel is widely used in industry, furniture decoration industry, food and medical industry. Due to its comprehensive and good comprehensive properties, austenitic stainless steel has been widely used in various industries.
3. Different classifications
There are many classifications of 304 stainless steel pipes. The first is seamless tubes and straight seam welded steel pipes. The second most basic classification is 304 stainless steel pipes for structures and 304 stainless steel pipes for industrial fluid transportation.
Austenitic ferritic duplex stainless steel is a stainless steel with about half austenite and half ferrite. In the case of low C content, the Cr content is 18%~28%, and the Ni content is 3%~10%. Some steels also contain alloying elements such as Mo, Cu, Si, Nb, Ti, and N.
