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304 color stainless steel square tube in Chaonan district has been widely used in engineering

Article source: Foshan Quanyu Stainless Steel Co., Ltd Editor in charge: Ample stainless steel
Release time: June 2, 2018 24 hours hotline: 134-5082-8388 Views:
304 color stainless steel square tube in Chaonan District There are many classification methods. According to the structure of stainless steel, it can be divided into two types: corrosion-resistant stainless steel and stainless steel; according to the structure of stainless steel, it can be divided into two types: corrosion-resistant stainless steel and stainless steel It can be divided into non-magnetic stainless steel, free cutting stainless steel, low-temperature stainless steel, high-strength stainless steel and so on. Because of its excellent corrosion resistance, formability, compatibility and toughness in a wide temperature range, stainless steel has been widely used in heavy industry, light industry, daily necessities industry and building decoration industry.

austenitic stainless steel
Stainless steel with austenite structure at room temperature. When the content of Cr is about 18%, Ni is 8% ~ 10%, C is about 0.1%, the austenite structure is stable. Austenitic Cr Ni stainless steel includes famous 18Cr-8Ni steel and high Cr Ni series steel developed by adding CR and Ni contents and adding Mo, Cu, Si, Nb, Ti and other elements. Austenitic stainless steel is non-magnetic and has high toughness and plasticity, but its strength is low. It can not be strengthened by phase transformation, but can only be strengthened by cold working. If s, CA, Se, TE and other elements are added, it has good machinability. This kind of steel can resist the corrosion of sulfuric acid, phosphoric acid, formic acid, acetic acid, urea, etc. The intergranular corrosion resistance of this kind of steel can be significantly improved if the carbon content in the steel is less than 0.03% or contains Ti and Ni. High silicon austenitic stainless steel with concentrated nitric acid has good corrosion resistance. Because of its comprehensive and good comprehensive properties, austenitic stainless steel has been widely used in all walks of life.

304 color stainless steel square tube in Chaonan District Stainless steel with ferrite structure as the main structure in service. The content of chromium is in the range of 11% ~ 30%, and it has a BCC crystal structure. This kind of steel generally does not contain nickel, and sometimes contains a small amount of Mn, Ti, Nb and other elements. This kind of steel has the characteristics of large thermal conductivity, small expansion coefficient, good oxidation resistance and excellent stress corrosion resistance. It is mostly used for manufacturing parts resistant to atmospheric, steam, water and oxidizing acid corrosion. This kind of steel has some disadvantages, such as poor plasticity, obvious reduction of plasticity and corrosion resistance after welding, which limits its application. The application of secondary refining technology (AOD or VOD) can greatly reduce the interstitial elements such as carbon and nitrogen, so this kind of steel is widely used.

Austenitic ferrite duplex stainless steel
It is a stainless steel with austenite and ferrite structure accounting for about half. In the case of low C content, Cr content is 18% ~ 28%, Ni content is 3% ~ 10%. Some steels also contain Mo, Cu, Si, Nb, Ti, N and other alloy elements. This kind of steel has the characteristics of both austenitic and ferritic stainless steel. Compared with ferrite, this kind of steel has higher plasticity and toughness, no room temperature brittleness, significantly improved intergranular corrosion resistance and welding performance. At the same time, it also maintains the brittleness of ferritic stainless steel at 475 ℃, high thermal conductivity and superplasticity. Compared with austenitic stainless steel, it has higher strength, intergranular corrosion resistance and chloride stress corrosion resistance. Duplex stainless steel has excellent pitting corrosion resistance and is also a nickel saving stainless steel.

Martensitic stainless steel
304 color stainless steel square tube in Chaonan District Its mechanical properties can be adjusted by heat treatment of stainless steel. The typical brand is Cr13, such as 2Cr13, 3Cr13, 4Cr13, etc. It is mainly used for steam turbine blades, tableware and surgical instruments. According to the difference of chemical composition, martensitic stainless steel can be divided into martensitic chromium steel and martensitic chromium nickel steel. Stainless steel can be divided into austenite, martensite and martensite according to the different mechanisms.

Contact person: Miss Li
Contact information: 0757-29399275 18924802728 (same as wechat)
Address: no.25-31, block 1, Block E, Liyuan metal Logistics City, Chencun Town, Shunde, Foshan

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