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Sea water corrosion-resistant steel with low cost

A seawater-resistant and low-cost technology, applied in the field of steel, can solve the problems of increasing the production cost of corrosion-resistant steel and the difficulty of the production process, restricting the development of corrosion-resistant steel, and being difficult to satisfy, so as to be conducive to popularization and application and improve the corrosion resistance of seawater. , the effect of low production cost

Inactive Publication Date: 2010-07-28
武钢集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This increases the production cost and difficulty of the production process of corrosion-resistant steel, making the cost of corrosion-resistant steel much higher than that of ordinary carbon steel, making it difficult to meet the needs of the majority of middle and low-level consumers, and to a certain extent restricts the use of corrosion-resistant steel development of

Method used

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  • Sea water corrosion-resistant steel with low cost

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The chemical composition of low-cost seawater corrosion-resistant steel is calculated by weight percentage: C: 0.06, Si: 0.16, Mn: 0.70, P: 0.013, S: 0.016, Als: 0.070, O: 0.0050.

[0020] The steel was immersed in NaCl solution for 20 days, and the average corrosion rate was 4.58g / m 2 .h, the corrosion resistance is equivalent to 97.6% of MARINER steel.

Embodiment 2

[0022] The chemical composition of the low-cost seawater corrosion-resistant steel is C: 0.10, Si: 0.22, Mn: 0.75, P: 0.010, S: 0.011, Als: 0.039, O: 0.0040 by weight percentage.

[0023] In the 20-day weekly immersion test of the steel in NaCl solution, the average corrosion rate is 4.53g / m 2 .h, the corrosion resistance is equivalent to 98.7% of MARINER steel.

Embodiment 3

[0025] The chemical composition of low-cost seawater corrosion-resistant steel is C: 0.07, Si: 0.28, Mn: 0.50, P: 0.030, S: 0.019, Als: 0.004, O: 0.0061 by weight percentage.

[0026] The steel was immersed in NaCl solution for 20 days, and the average corrosion rate was 4.28g / m 2 .h, the corrosion resistance is equivalent to 104% of MARINER steel.

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Abstract

The invention discloses a sea water corrosion-resistant steel with low cost. The steel comprises chemical components in percentage by weight: 0.06-0.15 C, 0.05-0.40 Si, 0.50-1.20 Mn, 0.010-0.030 P, not more than 0.020 S, 0.004-0.070 Als and 0.0040-0.0100 O. Verified by tests, the steel has the advantages of excellent corrosion-resistant performance, simple chemical components and fewer impurity contents. Compared with the traditional corrosion-resistant steel technology, the invention has lower production cost and is beneficial to popularization and application.

Description

technical field [0001] The invention belongs to the field of steel materials, and specifically refers to a low-cost seawater corrosion-resistant steel. Background technique [0002] With the development of society, a resource-saving and environment-friendly society will become the mainstream of social development, and the requirements for environmental friendliness of materials will force the development of carbon steel and low alloy steel not only to increase the quantity, but to improve the quality requirements are getting higher and higher. The development of high-strength steel and corrosion-resistant steel has become an inevitable trend of steel development. In the development of corrosion-resistant steel, many research results have been obtained at home and abroad. [0003] There are many domestic studies on the production of corrosion-resistant steel. Before the present invention, the Chinese invention patent with application number 200610024179.X disclosed "a seawa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/06
Inventor 张万灵刘建容汪福成涂元强石争鸣
Owner 武钢集团有限公司
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