Stanniferous martensitic stainless steel with excellent performance and manufacturing method thereof

A martensitic stainless steel and manufacturing method technology, applied in the field of metallurgical materials, can solve the problems of no application, improve performance, etc., achieve the effects of excellent hardness, improved corrosion resistance, and reduced production costs

Inactive Publication Date: 2013-08-21
BAOSTEEL STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] It can be seen that in the development process of martensitic stainless steel, people have begun to notice that the corrosion resistance can be improved to a certain extent by reducing carbon and increasing nitrogen, but further improving corrosion resistance can only be achieved by addi

Method used

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  • Stanniferous martensitic stainless steel with excellent performance and manufacturing method thereof
  • Stanniferous martensitic stainless steel with excellent performance and manufacturing method thereof

Examples

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Embodiment Construction

[0031] The technical solution of the present invention will be further elaborated below in conjunction with specific examples. It should be clear that these examples are only used to describe the specific implementation of the present invention, and are not intended to constitute any limitation on the protection scope of the present invention.

[0032] Table 2 shows the weight percentages of the chemical components of the tin-containing martensitic stainless steels of Examples A-E and the steel plates of Comparative Examples F-I below. The manufacturing method of the tin-containing martensitic stainless steel of embodiment A-E and the steel plate of comparative example F-I is: smelt according to the proportioning of chemical composition shown in table 2, after continuous casting, heating, hot rolling, annealing and heat preservation, obtain For steels A, B, C, D, E, F, G, and H shown in Table 3, the heating temperature is 1100-1250°C, the annealing temperature is 800-900°C, and...

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Abstract

The invention discloses stanniferous martensitic stainless steel with excellent performance and a manufacturing method thereof. The steel comprises the following chemical components in percentage by weight: 0.15-0.40% of C, less than or equal to 1.0% of Si, less than or equal to 2.0% of Mn, less than or equal to 0.04% of P, less than or equal to 0.010% of S, 12.0-14.0% of Cr, 0.05-0.12% of N, 0.10-0.30% of Sn, and the balance of Fe and inevitable impurities. Tinned waste steel is added to control the content of Sn and then stanniferous martensitic stainless steel with excellent performance is melted. After being quenched at 1050 DEG C, the stanniferous martensitic stainless steel has the advantages that tensile strength of the steel is greater than or equal to 1500MPa, the Rockwell hardness is greater than or equal to 48HRC and the pitting potential is greater than or equal to 105mV. The steel has high strength and hardness as well as excellent corrosion resistance, and is suitable for manufacturing top-grade cutters, measuring implements and other parts requiring high hardness and corrosion resistance.

Description

technical field [0001] The invention relates to the field of metallurgical materials, in particular to a tin-containing martensitic stainless steel with excellent performance and a manufacturing method thereof; the tensile strength of the tin-containing martensitic stainless steel after quenching at 1050°C is ≥1500MPa, and the Rockwell hardness is ≥48HRC , pitting potential ≥ 105mV. Background technique [0002] Martensitic stainless steel is a kind of stainless steel whose microstructure and properties can be changed by different heat treatment processes. Typical steel types are 20Cr13, 30Cr13, etc., which are mainly used to manufacture various knives, scissors, measuring tools, etc., most of which require high strength ( Generally, the tensile strength is ≥1500MPa), the hardness is above 48HRC, and a certain corrosion resistance is required. After annealing, their main structure is ferrite + carbide, which has low strength, hardness and good plasticity; after high-tempera...

Claims

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Application Information

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IPC IPC(8): C22C38/18C22C38/38C21D1/18
Inventor 秦斌江来珠
Owner BAOSTEEL STAINLESS STEEL
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