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Corrosion-resistant stainless steel

A stainless steel, corrosion-resistant technology, applied in the field of alloys, can solve problems such as reducing rust resistance, and achieve the effects of improving hardenability and hardness, improving softening resistance, and good oxidation resistance.

Inactive Publication Date: 2017-06-20
史晓强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason why stainless steel can be stainless is because of the presence of chromium and nickel. Reducing the content of these two components will reduce the antirust performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] C0.07 part, Si0.3 part, Mn1.3 part, P0.025 part, Al0.035 part, N0.008 part, S0.025 part, Cr1 part, Mo0.3 part, Ni1 part, Ti0.1 part , V0.35 parts, Sc0.2 parts, Sr0.3 parts, Fe150 parts.

Embodiment 2

[0015] C0.003 part, Si0.001 part, Mn0.1 part, P0.001 part, Al0.015 part, N0.001 part, S0.0181 part, Cr0.8 part, Mo0.1 part, Ni0.3 part, 0.05 parts of Ti, 0.01 parts of V, 0.01 parts of Sc, 0.01 parts of Sr, and 100 parts of Fe.

Embodiment 3

[0017] C0.004 parts, Si0.01 parts, Mn0.7 parts, P0.01 parts, Al0.022 parts, N0.007 parts, S0.022 parts, Cr0.9 parts, Mo0.2 parts, Ni0.4 parts, 0.07 parts of Ti, 0.13 parts of V, 0.13 parts of Sc, 0.12 parts of Sr, and 130 parts of Fe.

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PUM

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Abstract

A corrosion-resistant stainless steel belongs to the technical field of alloys. The present invention consists of the following parts by weight: C0.003-0.07 parts, Si0.001-0.3 parts, Mn0.1-1.3 parts, P0.001-0.025 parts, Al0.015-0.035 parts, N0.001-0.008 parts Part, S0.0181-0.025 part, Cr0.5-1 part, Mo0.1-0.3 part, Ni0.3-1 part, Ti0.05-0.1 part, V0.01-0.35 part, Sc0.01-0.2 part , Sr0.01-0.3 parts, Fe100-150 parts. The invention has good oxidation resistance and corrosion resistance, and can be used in high-sulfur and high-acid environments such as cargo oil tanks of oil tankers, industrial boiler pipelines, and chemical raw material tanks, as well as structures of oil storage tanks, oil production platforms, freight tankers, and oil pipeline systems put up.

Description

technical field [0001] The invention relates to a corrosion-resistant stainless steel, which belongs to the technical field of alloys. Background technique [0002] Stainless steel is the abbreviation of stainless acid-resistant steel, and the steel grades that are resistant to weak corrosive media such as air, steam, water, or have stainless properties are called stainless steel; The steel type is called acid-resistant steel. Due to the difference in chemical composition of the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel is generally stainless. The corrosion resistance of stainless steel decreases with the increase of carbon content. Therefore, the carbon content of most stainless steels is low, the maximum does not exceed 1.2%, and the carbon content of some steels is even lower than 0.03% (such as 00Cr12). The main alloying element in stainless steel is Cr (chr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/04C22C38/08C22C38/12C22C38/14C22C38/02C22C38/06
CPCC22C38/18C22C38/002C22C38/004C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14
Inventor 史晓强
Owner 史晓强