Seawater and humid environment corrosion resistant steel

A wet environment, anti-seawater technology, applied in the field of anti-corrosion steel in seawater and wet environments, can solve the problems of serious corrosion and poor effect, and achieve the effect of excellent welding performance, reduced sensitivity, and good resistance to CL ionic stress corrosion.

Inactive Publication Date: 2007-09-26
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In China, most of the materials used in seawater desalination devices are ...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The following are specific descriptions of Examples 1-5 of the present invention.

[0046] The concrete chemical composition (Wt%) of example 1-5, non-metallic inclusion (level) (by JK series rating), room temperature mechanical property, grain size (level), Charpy V-notch impact energy (J) and gold The phase structure is shown in Table 1, and the high temperature mechanical properties are shown in Table 2.

[0047] instance number

1

2

3

4

5

chemical element

Vegetarian wt%

C

0.07

0.07

0.075

0.09

0.06

mn

0.32

0.35

0.35

0.30

0.40

Si

0.26

0.31

0.50

0.20

0.35

Cr

1.01

1.10

1.00

1.20

1.10

Mo

0.28

0.30

0.25

0.30

0.35

Al

0.55

0.51

0.50

0.60

0.40

P

0.010

0.010

0.015

0....

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PUM

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Abstract

The invention discloses corrosion resistant steel, which comprises the following parts: 0.06-0.09% C, 0.20-0.50% Si, 0.30-0.40% Mn, 1.00-1.20% Cr, 0.40-0.60% Al, 0.25-0.35% Mo, not more than 0.015% P, not more than 0.010% S, not more than 0.15% Cu, not more than 0.20% Ni, not more than 0.020% Ti, not more than 0.020% Sn, not more than 0.020% As, not more than 0.0025% Pb, not more than 0.010% Bi, not more than 0.004% Sb, not more than 0.030% [N], not more than 0.0025% [O], not more than 0.00015% [H], Fe and inevitable impurity.

Description

technical field [0001] The invention belongs to the quality design of iron-based alloy steel in the metallurgical industry, and in particular relates to corrosion-resistant steel in seawater and humid environments. Background technique [0002] In the world, the ocean accounts for about seven tenths of the earth's surface area, and it is a treasure house of rich natural resources. In recent years, my country and other countries in the world have attached great importance to the development of the ocean. Therefore, the research and development and application of seawater corrosion-resistant steel are particularly important and urgent. . [0003] It is well known that in the seawater environment (humid, salty), the corrosion of steel is very serious, and its corrosion degree is 3 to 7 times that of ordinary carbon steel in normal use. Therefore, it is required that the material should have good corrosion resistance during the service life properties, high mechanical properties...

Claims

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Application Information

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IPC IPC(8): C22C38/22C22C38/44
Inventor 黄泽民陈新建
Owner BAOSHAN IRON & STEEL CO LTD
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