EP0314901A3 - High strength nitrogen-containing, fully austenitic cobalt steels with a 0,2 yield strength exceeding 600 n/mm2 - Google Patents

High strength nitrogen-containing, fully austenitic cobalt steels with a 0,2 yield strength exceeding 600 n/mm2 Download PDF

Info

Publication number
EP0314901A3
EP0314901A3 EP88114729A EP88114729A EP0314901A3 EP 0314901 A3 EP0314901 A3 EP 0314901A3 EP 88114729 A EP88114729 A EP 88114729A EP 88114729 A EP88114729 A EP 88114729A EP 0314901 A3 EP0314901 A3 EP 0314901A3
Authority
EP
European Patent Office
Prior art keywords
nitrogen
fully austenitic
high strength
steel
yield strength
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88114729A
Other languages
German (de)
French (fr)
Other versions
EP0314901A2 (en
Inventor
Peter Dr. Dahlmann
Johannes Jachowski
Paul Pant
Gerald Stein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Fried Krupp AG Hoesch Krupp
Fried Krupp AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fried Krupp AG Hoesch Krupp, Fried Krupp AG filed Critical Fried Krupp AG Hoesch Krupp
Publication of EP0314901A2 publication Critical patent/EP0314901A2/en
Publication of EP0314901A3 publication Critical patent/EP0314901A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt

Abstract

Hochfester stickstoffhaltiger vollaustenitischer Kobaltstahl mit einem Rp0,2-Dehngrenzenwert oberhalb 600 N/mm², dadurch hergestellt, daß in einem vollaustenitischen Chrom-Nickel-Stahl, dessen Stickstoffgehalt mindestens 50 % oberhalb der Stickstofflöslichkeitsgrenze bei Normaldruck liegt, das Legierungselement Nickel ganz oder teilweise durch das Legierungselement Kobalt substituiert wird, der Stahl anschließend bei einer Temperatur von 1050 °C bis 1200 °C einer Lösungsglühung unterzogen und dann in Wasser abgeschreckt wird. High-strength, nitrogen-containing, fully austenitic cobalt steel with an R p0.2 proof stress value above 600 N / mm², produced in a fully austenitic chromium-nickel steel, the nitrogen content of which is at least 50% above the nitrogen solubility limit at normal pressure, completely or partially through the alloying element nickel the alloying element is substituted for cobalt, the steel is then subjected to solution treatment at a temperature of 1050 ° C. to 1200 ° C. and then quenched in water.

EP88114729A 1987-10-31 1988-09-09 High strength nitrogen-containing, fully austenitic cobalt steels with a 0,2 yield strength exceeding 600 n/mm2 Withdrawn EP0314901A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873736965 DE3736965A1 (en) 1987-10-31 1987-10-31 HIGH-STRENGTH NITROGEN-FULL FULL-AUSTENITIC COBAL STEELS WITH 0.2 STRETCH LIMITS ABOVE HALF 600 N / MM (ARROW HIGH) 2 (ARROW HIGH)
DE3736965 1987-10-31

Publications (2)

Publication Number Publication Date
EP0314901A2 EP0314901A2 (en) 1989-05-10
EP0314901A3 true EP0314901A3 (en) 1990-07-11

Family

ID=6339500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114729A Withdrawn EP0314901A3 (en) 1987-10-31 1988-09-09 High strength nitrogen-containing, fully austenitic cobalt steels with a 0,2 yield strength exceeding 600 n/mm2

Country Status (3)

Country Link
US (1) US4865661A (en)
EP (1) EP0314901A3 (en)
DE (1) DE3736965A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU650156B2 (en) * 1992-08-05 1994-06-09 Lions Eye Institute Limited Keratoprosthesis and method of producing the same
RU2158319C1 (en) * 2000-04-25 2000-10-27 Институт металлургии и материаловедения им. А.А. Байкова РАН High-strength corrosion- and wear-resistant austenitic steel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE676284A (en) * 1965-03-11 1966-06-16
DE2534513A1 (en) * 1974-08-02 1976-02-12 Firth Brown Ltd AUSTENITE STAINLESS STEELS
EP0151487A2 (en) * 1984-02-07 1985-08-14 Kubota Ltd. Ferritic-austenitic duplex stainless steel
EP0231492A1 (en) * 1985-12-20 1987-08-12 Fried. Krupp Gesellschaft mit beschränkter Haftung Austenitic, nitrogen-containing chromium-nickel-molybdenum-manganese steel; process for manufacturing this steel and uses thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE865604C (en) * 1940-11-03 1953-02-02 Eisen & Stahlind Ag Steel alloy for objects that must have a high level of durability
GB1013239A (en) * 1964-08-13 1965-12-15 Swift Levick & Sons Ltd Improved alloy steels
JPS58224149A (en) * 1982-06-21 1983-12-26 Mitsubishi Steel Mfg Co Ltd Steel for metallic mold for molding glass
DE3310693A1 (en) * 1983-03-24 1984-10-04 Fried. Krupp Gmbh, 4300 Essen CORROSION-RESISTANT CHROME STEEL AND METHOD FOR THE PRODUCTION THEREOF
CA1223140A (en) * 1984-06-28 1987-06-23 Raynald Simoneau Austenitic cobalt stainless steel exhibiting ultra high resistance to erosive cavitation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE676284A (en) * 1965-03-11 1966-06-16
DE2534513A1 (en) * 1974-08-02 1976-02-12 Firth Brown Ltd AUSTENITE STAINLESS STEELS
EP0151487A2 (en) * 1984-02-07 1985-08-14 Kubota Ltd. Ferritic-austenitic duplex stainless steel
EP0231492A1 (en) * 1985-12-20 1987-08-12 Fried. Krupp Gesellschaft mit beschränkter Haftung Austenitic, nitrogen-containing chromium-nickel-molybdenum-manganese steel; process for manufacturing this steel and uses thereof

Also Published As

Publication number Publication date
EP0314901A2 (en) 1989-05-10
DE3736965C2 (en) 1992-11-05
US4865661A (en) 1989-09-12
DE3736965A1 (en) 1989-05-11

Similar Documents

Publication Publication Date Title
SE8101094L (en) COPPER- AND COVE-AUSTENITIC STAINLESS STEEL
DE69126902T2 (en) Austenitic steel with improved stress corrosion cracking resistance characteristics, process for its production and its use
YU130488A (en) Austenite steel with improved hardness and corrosion resistance at high temperatures
EP0314901A3 (en) High strength nitrogen-containing, fully austenitic cobalt steels with a 0,2 yield strength exceeding 600 n/mm2
GB2162857B (en) Method of manufacturing pressure vessel steel with high strength and toughness
Roberts Pleistocene environments in time and space.
EP0320953A3 (en) Bushing
DE3777043D1 (en) CORROSION-RESISTANT AUSTENITIC STAINLESS STEEL.
DE3888442D1 (en) Plant for the production of steel, in particular mini steel plant.
KR920000948A (en) Manufacturing method of mooring chain steel with excellent impact resistance and weldability
DE3766040D1 (en) STRESS-CORROSION-RESISTANT MOLDING STEEL.
JPS5239519A (en) Method of manufacturing high tensile steel of superfine grain structur e
Zaccone Fatigue and Strain-Hardening of High Carbon Martensite--Austenite Composite Microstructures
ATE46720T1 (en) PROCESS FOR THE PRODUCTION OF REINFORCING STEEL IN THE FORM OF BARS OR WIRE ROD.
JPS5428217A (en) Corrosion resistant high tensile aluminum alloy with superior workability
Magdowski et al. Stress corrosion cracking of high nitrogen steels
KR900010039A (en) Manufacturing method of high tensile strength steel with excellent weld toughness
KR880007767A (en) Manufacturing method of high tensile strength steel with low stress relief annealing crack susceptibility
JPS5360813A (en) Steel chain with high true tensile stress
KR850001298A (en) Manufacturing method of high strength steel with excellent weather resistance
KR870002281A (en) Manufacturing method of high tensile hot dip galvanized steel sheet
KR880014125A (en) Manufacturing method of high strength chain steel with excellent impact resistance and weldability
Georgieva High-strength steels with plasticity induced by martensitic transformation
ZA866747B (en) Method of making components of steel with high-strength and simultaneously high toughness which retain these properties also after a hot forming operation
DK200986A (en) APPLICATION OF A HIGH-STRENGTH CHROME-NICKEL CHROME-NICKEL MOLYBDENTITANE STEEL AS NON-RUSTING SPECIAL STEEL FOR LONG-TERM INVESTMENT AND CONSUMPTION GOODS

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19901126

17Q First examination report despatched

Effective date: 19920626

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FRIED. KRUPP AG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FRIED. KRUPP AG HOESCH-KRUPP

18W Application withdrawn

Withdrawal date: 19930807