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Low chrome and ferrite-based stainless steel having improved corrosion resistance and anti-ridging properties

A corrosion-resistant, stainless steel technology, applied in the field of low-chromium ferritic stainless steel, can solve the problems of reduced formability and rising cost of stainless steel, and achieve the effect of excellent formability and reduced production costs

Active Publication Date: 2015-03-25
浦项股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The aforementioned methods lead to an increase in the cost of ferritic stainless steel, and at the same time, high alloying of ferritic stainless steel results in a decrease in formability

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  • Low chrome and ferrite-based stainless steel having improved corrosion resistance and anti-ridging properties
  • Low chrome and ferrite-based stainless steel having improved corrosion resistance and anti-ridging properties
  • Low chrome and ferrite-based stainless steel having improved corrosion resistance and anti-ridging properties

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Embodiment Construction

[0032] The details of other embodiments are included in the detailed description and the drawings.

[0033] The advantages, features, and methods for achieving them of the present invention will become apparent by referring to the embodiments described in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be realized in various forms different from each other. Including the case of being electrically connected with another element interposed therebetween. In addition, in order to clearly describe the present invention, parts irrelevant to the present invention are omitted from the drawings, and the same reference numerals are assigned to similar parts throughout the specification.

[0034] Hereinafter, the present invention will be described with reference to the accompanying drawings.

[0035] According to the preferred embodiment of the present invention, the low-chromium ferritic stainl...

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Abstract

The present invention relates to a low chrome and ferrite-based stainless steel having improved corrosion resistance and anti-ridging properties, wherein the low chrome and ferrite-based stainless steel comprises 10.0 wt% to 15.0 wt% of Cr, 0.01 wt% to 0.05 wt% of C, 0.01 wt% to 0.05 wt% of N, 0.7 wt% to 2.0 wt% of Si, 0.01 wt% to 2.0 wt% of Mn, 0.035 wt% or less of P, 0.01 wt% or less of S, and the remainder as Fe and impurities, and satisfies formulas (1) to (3) below. Formula (1): 10*Si / Cr is more than or equal to 0.45 and less than or equal to 1.7; formula (2): [C+N](wt%) is more than or equal to 0.03 and less than or equal to 0.07; formula (3): gammamax (%)is more than or equal to 25 and less than or equal to 55 (where, gammamax (%) = 420C (wt%) + 470N (wt%) + 23Ni (wt%) + 9Cu (wt%) + 10Mn (wt%) + 180 - 11.5Cr (wt%) - 11.5Si (wt%) - 12Mo (wt%) - 52Al (wt%)).

Description

technical field [0001] The present invention relates to a low-chromium ferritic stainless steel with improved corrosion resistance and wrinkling resistance, and particularly relates to improving the characteristics of corrosion resistance and wrinkling resistance by reducing the content of expensive chromium and controlling components such as silicon and carbon ferritic stainless steel. Background technique [0002] Compared with austenitic stainless steel, ferritic stainless steel is cheaper, has a lower thermal expansion rate, and has better surface gloss, formability, and oxidation resistance, so it is widely used in heat-resistant appliances, sink tops, exterior materials, and home appliances. , electronic components, etc. [0003] On the other hand, ferritic stainless steel is produced through a hot rolling process, an annealing and pickling process to remove the surface scale of the hot-rolled steel coil and remove internal stress of the material, a cold rolling and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/34
CPCC22C38/18C22C38/34C22C38/001C22C38/02C22C38/04C22C38/06C22C38/28C22C38/42
Inventor 康亨求金相锡朴志彦朴美男徐辅晟
Owner 浦项股份有限公司