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High-strength, high-ductility ferritic stainless steel plate and manufacturing method thereof

A manufacturing method and ductility technology, applied in manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of low elongation, low tensile strength, low strength, etc., to improve ductility, maintain high strength, high ductility Effect

Active Publication Date: 2019-12-27
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

[0004] Generally produced 410UF and other utility ferrite (Utility Ferrite), because the content of chromium (Cr) is about 12%, the corrosion resistance is poor, and it has low elongation, so it cannot be used as a fastener
Therefore, efforts are being made to use 430 series with a relatively high chromium (Cr) content as a material, but there is a problem of low strength when used as a fastener due to its low tensile strength.

Method used

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  • High-strength, high-ductility ferritic stainless steel plate and manufacturing method thereof
  • High-strength, high-ductility ferritic stainless steel plate and manufacturing method thereof
  • High-strength, high-ductility ferritic stainless steel plate and manufacturing method thereof

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Embodiment Construction

[0027] The terminology used herein is for referring to particular embodiments only and is not intended to be limiting of the invention. As used herein, singular forms include plural forms unless the context clearly dictates otherwise. The word "comprising" used in the description specifies specific features, fields, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other specific features, fields, integers, steps, operations, elements, components points and / or groups.

[0028] Although not defined in different meanings, all terms including technical terms and scientific terms used herein have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms defined in commonly used dictionaries should be further interpreted as conforming to relevant technical documents and currently disclosed contents, and cannot be interpreted as ideal meanings or very formal m...

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Abstract

According to the high -intensity, high -extension of iron stainless steel plates of the present invention, it is characterized by weight (WT) %, including: carbon (C): 0.065 ~ 0.09 %, nitrogen (n): 0.035 ~ 0.06 %, Silicon (SI): 0.6 ~ 1.0 %, manganese (mn): 0.01 ~ 0.70 %, phosphorus (P): 0.001 ~ 0.035 %, sulfur (s): 0.001 ~ 0.005 %, chromium (CR): 15.0 ~ 17.0 %, Nickel (Ni): 0.001 ~ 0.50 %, copper (CU): 0.001 ~ 0.50 %, balance iron (Fe), and unavoidable impurities, and 2*[si] +10 ([c]+[n]))Value is above 2.2, [TS (MPA)]+10 [EL ( %)] value meets 780 or more, and the resistance of the tension is 520MPa or more.

Description

technical field [0001] The present invention relates to a high-strength, high-ductility ferritic stainless steel plate and a manufacturing method thereof, and more particularly, to a high-strength, high-ductility sheet for use as a fastener for automobiles and general hoses Ferritic stainless steel plate used by (Fastener) and its manufacturing method. Background technique [0002] Ferritic stainless steel is cheaper than austenitic stainless steel, has a lower coefficient of thermal expansion, and has good surface gloss, formability and oxidation resistance, so it is widely used in heat-resistant appliances, kitchen cabinets, exterior materials, home appliances, electronics, etc. accessories etc. [0003] Fasteners for automobiles or general hoses are parts that fasten plastic hoses or pipes. Therefore, high strength is required, and cracks should not occur when bent, so excellent ductility is required at the same time. In addition, since it is used not only indoors but ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/42C21D8/02C21D1/26
CPCC21D1/26C21D8/0226C21D8/0236C22C38/001C22C38/002C22C38/02C22C38/04C22C38/42C21D2211/001C21D2211/005C21D6/002C21D9/46C21D8/0205C21D9/663C21D1/76C21D8/0247C21D8/0263C21D8/00
Inventor 金相锡金志恩朴美男郑壹鄼朴秀湖
Owner 浦项股份有限公司