DK2229463T3 - Korrosionsbestandigt magert austenitisk rustfrit stål - Google Patents

Korrosionsbestandigt magert austenitisk rustfrit stål Download PDF

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Publication number
DK2229463T3
DK2229463T3 DK08730701.3T DK08730701T DK2229463T3 DK 2229463 T3 DK2229463 T3 DK 2229463T3 DK 08730701 T DK08730701 T DK 08730701T DK 2229463 T3 DK2229463 T3 DK 2229463T3
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Denmark
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stainless steel
austenitic stainless
alloy
article
austenitic
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DK08730701.3T
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English (en)
Inventor
David S Bergstrom
James M Rakowski
Charles P Stinner
John J Dunn
John F Grubb
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Ati Properties Llc
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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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Claims (15)

1. Austenitisk rustfrit stål bestående af, i vægt-%, op til 0,20 C, 2,0-6,0 Mn, op til 2,0 Si, 16,0-23,0 Cr, 5,0-7,0 Ni, 0,5 til 3,0 Mo, op til 3,0 Cu, 0,1-0,35 N, op til 4,0 W, op til 0,01 B, op til 1,0 Co, med jern og urenheder som rest, hvor stålet har et ferritnummer større end 0 til mindre end 11 og en MD30-værdi på mindre end -10°C og hvor 0,5 < (Mo + W/2) < 5,0 og 5,0 ^ (Ni + Co) < 8,0.
2. Austenitisk rustfrit stål ifølge krav 1, som har en PREw-værdi på over 26.
3. Austenitisk rustfrit stål ifølge krav 1, som har et ferritnummer på 3 op til 5.
4. Austenitisk rustfrit stål ifølge krav 1, hvor C ikke er højere end 0,08.
5. Austenitisk rustfrit stål ifølge krav 1, hvor Si ikke er højere end 1,0.
6. Austenitisk rustfrit stål ifølge krav 1, hvor Mn er begrænset til 3,0-6,0.
7. Austenitisk rustfrit stål ifølge krav 1, hvor Cr er begrænset til 17,0-23,0.
8. Austenitisk rustfrit stål ifølge krav 1, hvor N er begrænset til 0,14-0,35.
9. Austenitisk rustfrit stål ifølge krav 1, hvor B ikke er højere end 0,008.
10. Austenitisk rustfrit stål ifølge krav 1, hvor Cu ikke er højere end 1,0.
11. Austenitisk rustfrit stål ifølge krav 1, som har en MD30-value på mindre end -30°C.
12. Austenitisk rustfrit stål ifølge krav 1, bestående af, i vægt-%, op til 0,08 C, 3,0-6,0 Mn, op til 2,0 Si, 17,0-23,0 Cr, 5,0-7,0 Ni, 0,5-3,0 Mo, op til 1,0 Cu, 0,14-0,35 N, op til 4,0 W, op til 0,008 B, op til 1,0 Co, med jern som rest.
13. Fremstillet artikel omfattende et austenitisk rustfrit stål ifølge et af de foregående krav.
14. Fremstillet artikel ifølge krav 13, hvor artiklen er tilpasset til anvendelse I mindst et af et miljø med lav temperatur og et kryogenisk miljø.
15. Fremstillet artikel ifølge krav 13, hvor artiklen er udvalgt fra gruppen bestående afen korrosionsbestandig artikel, et korrosionsbestandigt konstruktionspanel, en fleksibel konnektor, en foldebælg, et rør, en rørledning, et skorstensrør, en skorstensforing, en pladerammevarmevekslerdel, en kondensatordel, en del til farmaceutisk forarbejdningsudstyr, en hygiejneartikel og en del til udstyr til ethanolfremstilling eller -forarbejdning.
DK08730701.3T 2007-12-20 2008-02-26 Korrosionsbestandigt magert austenitisk rustfrit stål DK2229463T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1533807P 2007-12-20 2007-12-20
PCT/US2008/054945 WO2009082501A1 (en) 2007-12-20 2008-02-26 Corrosion resistant lean austenitic stainless steel

Publications (1)

Publication Number Publication Date
DK2229463T3 true DK2229463T3 (da) 2017-10-23

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US (3) US8877121B2 (da)
EP (1) EP2229463B1 (da)
JP (1) JP5383701B2 (da)
KR (1) KR101467616B1 (da)
CN (1) CN101903549B (da)
AU (1) AU2008341066B2 (da)
BR (1) BRPI0820024B1 (da)
CA (1) CA2706478C (da)
DK (1) DK2229463T3 (da)
ES (1) ES2644452T3 (da)
IL (1) IL205867A (da)
MX (1) MX2010005668A (da)
NO (1) NO2229463T3 (da)
PL (1) PL2229463T3 (da)
RU (1) RU2450080C2 (da)
SG (1) SG186625A1 (da)
WO (1) WO2009082501A1 (da)
ZA (1) ZA201004196B (da)

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