KR970701271A - 내식성이 우수한 2상 스테인레스강(two-phase stainless steel) - Google Patents

내식성이 우수한 2상 스테인레스강(two-phase stainless steel)

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Publication number
KR970701271A
KR970701271A KR1019960704408A KR19960704408A KR970701271A KR 970701271 A KR970701271 A KR 970701271A KR 1019960704408 A KR1019960704408 A KR 1019960704408A KR 19960704408 A KR19960704408 A KR 19960704408A KR 970701271 A KR970701271 A KR 970701271A
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KR
South Korea
Prior art keywords
less
bal
stainless steel
phase stainless
corrosion resistance
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KR1019960704408A
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English (en)
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KR100216683B1 (ko
Inventor
시게키 아즈마
가즈히로 오가와
Original Assignee
나카무라 다메아키
스미토모긴조쿠고오교오 가부시키가이샤
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Publication of KR970701271A publication Critical patent/KR970701271A/ko
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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
    • 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
    • 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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • 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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

본 발명은 석유정재, 화학공업등의 플랜트에서의 배관, 열교환기등의 용도로 적합한 값싸고 또 내식성이 우수한 2상 스테인레스강에 관한 것이다.
본 발명은 중량%로 Si:0.05∼2.0%, Mn:0.1∼4.0%, Ni:1.0∼4.0%, Cr:20.0∼26.0%, Cu:1.0%를 초과 3.0%이하, Al:0.002∼0.05%, N:0.10∼0.40%로, V, Ti 또는 Nb의 1종 이상을 합계량으로 0.05∼0.50%로 하며, 또 필요에 따라 Mo:0.50% 이하, W:0.50% 이하, B:0.0030% 이하 및 Ca:0.0030% 이하를 함유하고, 잔부가 Fe 및 불가피한 불순물로 이루어지고, 불순물의 중에는 C:0.05% 이하 P:0.03% 이하 S: 0.005% 이하가 되는 화학조성을 가지고 또 하기①식으로 나타내는 Nibal값이 -11.0∼-8.0인 것을 특징으로 하는 내식성이 우수한 2상 스테인레스강이다.
Nibal=Nieq-1.1Creq+8.2 ①
단지
Nieq=Ni(%)+0.5×Cu(%)+30×{c(%)+N(%)} ②
Creq=Cr(%)+1.5×Si(%)+Mo(%)+W(%) ③
으로 한다.

Description

내식성이 우수한 2상 스테인레스강(two-phase stainless steel)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (4)

  1. Si:0.05∼2.0%, Mn:0.1∼4.0%, Ni:1.0∼4.0%, Cr:20.0∼26.0%, Cu:1.0%를 초과 3.0% 이하, Al:0.002∼0.05%, N:0.10∼0.40%로, V, Ti 또는 Nb의 1종 이상을 합계량으로 0.05∼0.50% 함유하고, 잔부(殘部)가 Fe 및 불가피한 불순물로 되며, 불순물 중에서는 C:0.05% 이하, P:0.03% 이하, S:0.005%가 되는 화학조성을 가지며, 또 하기①식으로 나타내는 Nibal값이 -11.0∼-8.0인 것을 특징으로 하는 내식성이 우수한 2상 스테인레스강.
    단지,
    Nibal=Nieq-1.1Creq+8.2 ①
    여기서,
    Nieq=Ni(%)+0.5×Cu(%)+30×{c(%)+N(%)} ②
    Creq=Cr(%)+1.5×Si(%)+Mo(%)+W(%) ③
  2. Si:0.05∼2.0%, Mn:0.1∼4.0%, Ni:1.0∼4.0%, Cr:20.0∼26.0%, Cu:1.0%를 초과 3.0% 이하, Al:0.002∼0.05%, N:0.10∼0.40%로, V, Ti 또는 Nb의 1종 이상을 합계량으로 0.05∼0.50% 또 Mo:0.50% 이하 및 W:0.50% 이하를 함유하며 잔부가 Fe 및 불가피적 불순물로 되며, 불순물 중에는 C:0.05% 이하, P:0.03% 이하, S:0.005% 이하로서 또 하기①식으로 나타내는 Nibal값이 -11.0∼-8.0인 것을 특징으로 하는 내식성이 우수한 2상 스테인레스강.
    단지,
    Nibal=Nieq-1.1Creq+8.2 ①
    여기서,
    Nieq=Ni(%)+0.5×Cu(%)+30×{c(%)+N(%)} ②
    Creq=Cr(%)+1.5×Si(%)+Mo(%)+W(%) ③
  3. Si:0.05∼2.0%, Mn:0.1∼4.0%, Ni:1.0∼4.0%, Cr:20.0∼26.0%, Cu:1.0%를 초과 3.0% 이하, Al:0.002∼0.05%, N:0.10∼0.40%로, V, Ti 또는 Nb의 1종 이상을 합계량으로 0.05∼0.50%, 또 B:0.0030% 이하 및 Ca:0.0030% 이하를 함유하며, 잔부가 Fe 및 불가피한 불순물로 되며, 불순물 중에는 C:0.05% 이하, P:0.03% 이하, S:0.005% 이하로서, 또 하기①식으로 나타내는 Nibal값이 -11.0∼-8.0인 것을 특징으로 하는 내식성이 우수한 2상 스테인레스강.
    단지,
    Nibal=Nieq-1.1Creq+8.2 ①
    여기서,
    Nieq=Ni(%)+0.5×Cu(%)+30×{c(%)+N(%)} ②
    Creq=Cr(%)+1.5×Si(%)+Mo(%)+W(%) ③
  4. Si:0.05∼2.0%, Mn:0.1∼4.0%, Ni:1.0∼4.0%, Cr:20.0∼26.0%, Cu:1.0%를 초과 3.0% 이하, Al:0.002∼0.05%, N:0.10∼0.40%로, V, Ti 또는 Nb의 1종 이상을 합계량으로 0.05∼0.50%, Mo:0.50% 이하 W:0.50% 이하 B:0.0030% 이하 및 Ca:0.0030% 이하를 함유하고, 잔부가 Fe 및 불가피한 불순물로 되며, 불순물 중에서는 C:0.05% 이하, P:0.03% 이하, S:0.05% 이하이고 또, 하기식①식으로 나타내는 Nibal값이 -11.0∼-8.0인 것을 특징으로 하는 내식성이 우수한 2상 스테인레스강.
    단지,
    Nibal=Nieq-1.1Creq+8.2 ①
    여기서,
    Nieq=Ni(%)+0.5×Cu(%)+30×{c(%)+N(%)} ②
    Creq=Cr(%)+1.5×Si(%)+Mo(%)+W(%) ③
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960704408A 1994-12-16 1995-12-14 내식성이 우수한 2상 스테인레스강 KR100216683B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP94-312284 1994-12-16
JP31228494 1994-12-16
PCT/JP1995/002574 WO1996018751A1 (fr) 1994-12-16 1995-12-14 Acier inoxydable duplex presentant une remarquable resistance a la corrosion

Publications (2)

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KR970701271A true KR970701271A (ko) 1997-03-17
KR100216683B1 KR100216683B1 (ko) 1999-09-01

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Country Link
US (1) US5672215A (ko)
EP (1) EP0750053B1 (ko)
JP (1) JP3271262B2 (ko)
KR (1) KR100216683B1 (ko)
WO (1) WO1996018751A1 (ko)

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WO1996018751A1 (fr) 1996-06-20
EP0750053A1 (en) 1996-12-27
EP0750053B1 (en) 2001-10-10
EP0750053A4 (en) 1998-04-01
KR100216683B1 (ko) 1999-09-01
US5672215A (en) 1997-09-30
JP3271262B2 (ja) 2002-04-02

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