KR100832694B1 - 내식성 및 심가공성이 우수한 페라이트계 스테인리스강 및그 제조방법 - Google Patents
내식성 및 심가공성이 우수한 페라이트계 스테인리스강 및그 제조방법 Download PDFInfo
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- KR100832694B1 KR100832694B1 KR1020060137058A KR20060137058A KR100832694B1 KR 100832694 B1 KR100832694 B1 KR 100832694B1 KR 1020060137058 A KR1020060137058 A KR 1020060137058A KR 20060137058 A KR20060137058 A KR 20060137058A KR 100832694 B1 KR100832694 B1 KR 100832694B1
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- stainless steel
- corrosion resistance
- ferritic stainless
- bar
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
Abstract
Description
Claims (3)
- 중량 %로 C;0.03이하, Si:0.5이하, Mn:0.5이하, P:0.035이하, S:0.01이하, Cr:18 ~ 21, Mo:0.5이하, N:0.030이하, Cu:0.5이하, Al:0.05이하, Ni: 0.2이하, C+N: 0.014이하, Ti: 0.4이하 나머지 Fe 및 불가피하게 첨가되는 불순물로 이루어진 페라이트계 스테인리스 강판에서 하기 수학식 (1)로 정의되며 심가공성을 나타내는 r-bar값을 1.57이상으로 하고, 공식지수 계산식은 수학식 (2)의 P.I. 값을 21이상으로 되도록 성분계를 조절하는 것을 특징으로 하는 내식성 및 심가공성이 우수한 페라이트계 스테인리스강.r-bar=-5.156x(%C+%N)-0.022x%Cr-0.015x%Mo-0.01x%Ti/(%C+%N)+2.327 (1)P.I.=Cr+3.3Mo (2)
- 제1항에 있어서,상기 Ti/C+N은 18~25 범위인 것을 특징으로 하는 내식성 및 심가공성이 우수한 페라이트계 스테인리스강.
- 제1항 또는 제2항의 페라이트계 스테인리스강 슬라브를 가열온도를 1230~1280oC, 마무리 압연온도를 720~800도로 열간압연 후, 냉간압하율을 60% 이상하여 냉연소둔하는 단계를 포함하는 것을 특징으로 하는 내식성 및 심가공성이 우 수한 페라이트계 스테인리스강 제조방법.
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KR1020060137058A KR100832694B1 (ko) | 2006-12-28 | 2006-12-28 | 내식성 및 심가공성이 우수한 페라이트계 스테인리스강 및그 제조방법 |
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KR1020060137058A KR100832694B1 (ko) | 2006-12-28 | 2006-12-28 | 내식성 및 심가공성이 우수한 페라이트계 스테인리스강 및그 제조방법 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016104973A1 (ko) * | 2014-12-26 | 2016-06-30 | (주)포스코 | 심가공 특성이 우수한 듀플렉스 스테인리스강 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001316773A (ja) | 2000-05-02 | 2001-11-16 | Nippon Steel Corp | 溶接性と加工性に優れた触媒担持用耐熱フェライト系ステンレス鋼 |
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001316773A (ja) | 2000-05-02 | 2001-11-16 | Nippon Steel Corp | 溶接性と加工性に優れた触媒担持用耐熱フェライト系ステンレス鋼 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016104973A1 (ko) * | 2014-12-26 | 2016-06-30 | (주)포스코 | 심가공 특성이 우수한 듀플렉스 스테인리스강 |
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