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Austenitic stainless steel material

A technology of austenitic stainless steel and elements, applied in the field of stainless steel, can solve the problems of reducing the strength of austenitic stainless steel and the tendency of cold work hardening, unfavorable material deep processing deformation, reducing the thermal processing performance of austenitic stainless steel, etc., to achieve enhanced corrosion resistance Effect

Inactive Publication Date: 2020-06-09
泰州市淳强不锈钢有限公司
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  • Abstract
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Problems solved by technology

In addition to the addition of Ni, the addition of other elements can stabilize the austenite structure, but since N and C are both strengthening elements, a small amount of addition will cause obvious work hardening due to cold working deformation, which is not conducive to the deep processing of the material out of shape
Copper is an important element that significantly improves the cold formability of various austenitic stainless steels. Adding copper to austenitic stainless steel can significantly reduce the strength and cold work hardening tendency of austenitic stainless steel, improve the plasticity of steel, but the addition of copper will reduce the austenitic stainless steel. The hot workability of stainless steel, and copper-rich compounds will be precipitated when used at high temperatures, which will affect its corrosion resistance

Method used

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Embodiment Construction

[0012] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0013] The invention provides an austenitic stainless steel material, the austenitic stainless steel material includes the following elements in weight percentage: C is 0.02-0.03%, Ni is 10.8-12.5%, Cr is 20.0-22.5%, and Mn is 0.8% -1.0%, Si is 0.4-0.7%, P is less than or equal to 0.036%, S is less than or equal to 0.013%, N is less than or equal to 0.05%; other elements are Fe and other impurity elements. On the basis of ordinary austenitic steel, the proportion of its various chemical components is optimized, so that it not only has good deep processing performance, but also enhances its corrosion resistance by changing the weight percentage of C, Cr and other elements.

[0014] Preferably, the weight percentage of the C is 0.02-0.025%, the weight percentage of the ...

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Abstract

The invention provides an austenitic stainless steel material. The austenitic stainless steel material comprises the following elements of, in percentage by weight, 0.02%-0.03% of C, 10.8%-12.5% of Ni, 20.0%-22.5% of Cr, 0.8%-1.0% of Mn, 0.4%-0.7% of Si, smaller than or equal to 0.036% of P, smaller than or equal to 0.013% of S, and smaller than or equal to 0.05% of N, and the other elements Fe and other impurity component elements.

Description

technical field [0001] The invention relates to stainless steel, in particular to an austenitic stainless steel material. Background technique [0002] Stainless steel, generally refers to the general term for steel with chemical stability in the atmosphere, water, acid, alkali and salt solutions, or in other corrosive media. Among them, austenitic stainless steel is non-magnetic and has high toughness and plasticity, but its strength is low, and it is impossible to strengthen it through phase transformation. It can only be strengthened by cold working. If S, Ca, Se, Te and other elements are added, it has good properties. machinability. In addition to the corrosion resistance of oxidizing acid medium, this kind of steel can also resist the corrosion of sulfuric acid, phosphoric acid, formic acid, acetic acid and urea if it contains Mo, Cu and other elements. If the carbon content in this type of steel is less than 0.03% or contains Ti and Ni, its resistance to intergranul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/40C22C38/02C22C38/04C22C38/50
CPCC22C38/02C22C38/04C22C38/40C22C38/50
Inventor 翟淳强
Owner 泰州市淳强不锈钢有限公司
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