00Cr13Mo corrosion-resistant ferrite stainless steel

A ferrite and stainless steel technology, applied in the field of heat exchange tubes, 00Cr13Mo corrosion-resistant ferritic stainless steel, can solve the problems of increased equipment cost, and achieve the effect of improved pitting corrosion resistance, low cost, and increased pitting corrosion resistance.

Inactive Publication Date: 2015-08-26
CENT IRON & STEEL RES INST
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  • Abstract
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Problems solved by technology

Due to the strong corrosiveness of high-sulfur crude oil and the high operating temperature of equipment (~320°C), the equipment corrosion problem caused by processing high-sulfur crude oil is becoming more and more serious. Conventional 304L austenitic stainless steel and 0Cr13 ferritic stainless steel have been It cannot meet the processing requirements of high-sulfur crude oil, and needs to use more high-grade stainless steel materials (such as AISI 316L austenitic stainless steel), but the equipment cost will increase significantly

Method used

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  • 00Cr13Mo corrosion-resistant ferrite stainless steel
  • 00Cr13Mo corrosion-resistant ferrite stainless steel
  • 00Cr13Mo corrosion-resistant ferrite stainless steel

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Embodiment Construction

[0023] The test material is selected on the basis of the chemical composition standard of 0Cr13 ferritic stainless steel, and 0.20-0.50% Mo is added to optimize the content of C, Cr, Ni, N and other elements. The chemical composition used is shown in Table 2. The experimental material except Mo Other ingredients are the same as the prior art. In the above list, serial numbers 3# to 6# are embodiments of the present invention, and serial numbers 1# and 2# are steel grades in the prior art. Serial number 1# is the common chemical composition of 0Cr13 stainless steel produced in industry, and serial number 2# has higher Cr content and lower C content, which is a chemical composition with higher corrosion resistance. The room-temperature mechanical performance comparison table of the embodiment and the prior art is shown in Table 3. It can be seen that embrittlement phenomenon has occurred in serial number 2#, therefore, C should not be too low and Cr should not be too high; Examp...

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Abstract

The invention relates to 00Cr13Mo corrosion-resistant ferrite stainless steel and belongs to the technical field of stainless steel. The 00Cr13Mo corrosion-resistant ferrite stainless steel comprises the following chemical components in percentage by weight: 0.010-0.025 percent of C, 0-0.6 percent of Si, 0-0.6 percent of Mn, less than or equal to 0.02 percent of P, less than or equal to 0.01 percent of S, 0-0.15 percent of Ni, 12.5-13.6 percent of Cr, 0.20-0.50 percent of Mo, less than or equal to 0.020 percent of N and the balance of Fe and inevitable impurities. The 00Cr13Mo corrosion-resistant ferrite stainless steel provided by the invention has the advantages of being relatively low in cost, high in medium and high-temperature sulfur corrosion resistance and pitting corrosion resistance, and suitable for the manufacture of heat exchange pipe materials for high-temperature and high-sulfur corrosion mediums in oil refining devices.

Description

technical field [0001] The invention belongs to the technical field of ferritic stainless steel, and in particular provides a 00Cr13Mo corrosion-resistant ferritic stainless steel, which is suitable for heat exchange tubes working in high-temperature and high-sulfur corrosive media in oil refineries. Background technique [0002] In the prior art, AISI 304L austenitic stainless steel (00Cr18Ni10) and 0Cr13 ferritic stainless steel are mainly used as materials for heat exchange tube bundles working in sulfur-containing corrosive media in oil refineries. 304L austenitic stainless steel has better uniform corrosion resistance and higher cost, while 0Cr13 ferritic stainless steel has better pitting corrosion resistance and lower cost. The corrosion form of heat exchange tube bundle materials is mainly perforation caused by pitting corrosion. For crude oil with medium and low sulfur content (≤1% elemental S), at lower equipment operating temperatures (≤250°C), both materials show...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/44C22C38/22
Inventor 杨钢赵吉庆张国信王立民包汉生刘正东何西扣唐广波李权程杰峰
Owner CENT IRON & STEEL RES INST
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