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Stainless steel and manufacturing method thereof

A manufacturing method, stainless steel technology, applied in the field of metal smelting, can solve the problems of poor stability of stainless steel

Active Publication Date: 2018-12-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a stainless steel and its manufacturing method to solve the problem of poor stability of austenitic stainless steel in the prior art

Method used

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  • Stainless steel and manufacturing method thereof
  • Stainless steel and manufacturing method thereof
  • Stainless steel and manufacturing method thereof

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] Such as figure 1 As shown, the embodiment of the present invention provides a kind of stainless steel, comprising:

[0022] The mass percentage of its chemical composition is: carbon C: 0.02-0.08%, silicon Si: 0.2-1.0%, manganese Mn: 2.0-4.0%, chromium Cr: 17.0-18.5%, nickel Ni: 8.0-10.0%, nitrogen N: 0.12~0.20%, copper Cu: 1.00~2.00%, molybdenum Mo: 2.1~3.3%, niobium Nb: 0.10~0.20%, boron B: 0.0015~0.0025%, calcium Ca: 0.0080~0.0120%, oxygen O≤0.0040% , and the rest are iron Fe and unavoidable impurities.

[0023] The stainless steel provided by the present invention comprehensively utilizes C, N, Mn, Ni, Cu, Cr and other elements to obtain a highly stable austenite phase, which can suppress the appearance...

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Abstract

The invention discloses a stainless steel and a manufacturing method thereof, belonging to the technical field of metal smelting. The objective of the invention is to overcome the problem of poor stability of austenitic stainless steel in the prior art. The stainless steel comprises the following chemical components by mass: 0.02 to 0.08% of carbon (C), 0.2 to 1.0% of silicon (Si), 2.0 to 4.0% ofmanganese (Mn), 17.0 to 18.5% of chromium (Cr), 8.0 to 10.0% of nickel (Ni), 0.12 to 0.20% of nitrogen (N), 1.00 to 2.00% of copper (Cu), 2.1 to 3.3% of molybdenum (Mo), 0.10 to 0.20% of niobium (Nb),0.0015 to 0.0025% of boron (B), 0.0080 to 0.0120% of calcium (Ca) and no more than 0.0040 % of oxygen (O), with the balance being iron (Fe) and unavoidable impurities.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a stainless steel and a manufacturing method thereof. Background technique [0002] Austenitic stainless steel is the most widely used stainless steel material. Its types include 300 series and 200 series. The crystal structure of the material is FCC face-centered cubic structure. Fully annealed austenitic stainless steel is non-magnetic or non-magnetic. Stainless steel components used in the fields of machinery, electronics, medical and communication often need to work under the conditions of magnetic field, electric field or signal, so the components are required to maintain completely non-magnetic characteristics to avoid interference with signal collection or transmission. [0003] The main steel types of commonly used austenitic stainless steel are: SUS304 series, including SUS304 and low-carbon SUS304L; SUS316 series with higher corrosion resistance, including SUS31...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/58C22C38/42C22C38/44C22C38/48C22C38/54C21D1/26C21D8/00
CPCC21D1/26C21D8/005C21D2211/001C22C38/001C22C38/002C22C38/02C22C38/42C22C38/44C22C38/48C22C38/54C22C38/58
Inventor 邵聪
Owner ZTE CORP
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