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Free What are the advantages of austenitic stainless steel seamless tube? China Grove

Published date: November 23, 2020
  • Location: China Grove, North Carolina, United States

Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. is a professional supplier of stainless steel seamless pipes, including the production of ferritic stainless steel seamless pipe and tube and austenitic stainless steel seamless tube. Now let me introduce the stainless steel performance of austenitic stainless steel seamless tube, if you are interested, please continue reading:

Austenitic-ferritic duplex stainless steel is a stainless steel in which austenite and ferrite each account for about half of the structure. In the case of low C content, the Cr content is 18% to 28%, and the Ni content is 3% to 10%. Some steels also contain Mo, Cu, Si, Nb, Ti, N and other alloying elements. This type of steel has the characteristics of austenitic and ferritic stainless steel. Compared with ferrite, it has higher plasticity and toughness, no room temperature brittleness, and significantly improved intergranular corrosion resistance and welding performance, while still maintaining iron The 475℃ brittleness, high thermal conductivity, and superplasticity of the element stainless steel. Compared with austenitic stainless steel, it has high strength and significantly improved resistance to intergranular corrosion and chloride stress corrosion. Duplex stainless steel has excellent pitting corrosion resistance and is also a nickel-saving stainless steel.

Compared with austenitic stainless steel, the advantages of duplex stainless steel are as follows:

(1) The yield strength is more than twice that of ordinary austenitic stainless steel, and it has sufficient plastic toughness for forming. The wall thickness of storage tanks or pressure vessels made of duplex stainless steel is 30-50% less than that of commonly used austenite, which is beneficial to reduce costs.

(2) It has excellent resistance to stress corrosion cracking. Even the duplex stainless steel with the lowest alloy content has higher resistance to stress corrosion cracking than austenitic stainless steel, especially in an environment containing chloride ions. Stress corrosion is a prominent problem that is difficult to solve for ordinary austenitic stainless steel.

(3) The corrosion resistance of 2205 duplex stainless steel, which is most commonly used in many media, is better than that of ordinary 316L austenitic stainless steel, while super duplex stainless steel has extremely high corrosion resistance. In some media, such as acetic acid, Formic acid can even replace high-alloy austenitic stainless steel and even corrosion-resistant alloys.

(4) It has good local corrosion resistance. Compared with austenitic stainless steel with the same alloy content, its wear corrosion resistance and fatigue corrosion resistance are better than austenitic stainless steel.


We create products with our heart. If you are interested in our products and want to order or learn more, you can click the following link: austenitic stainless steel seamless tube.

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