EP0255597A3 - Low alloy steels - Google Patents

Low alloy steels Download PDF

Info

Publication number
EP0255597A3
EP0255597A3 EP87109046A EP87109046A EP0255597A3 EP 0255597 A3 EP0255597 A3 EP 0255597A3 EP 87109046 A EP87109046 A EP 87109046A EP 87109046 A EP87109046 A EP 87109046A EP 0255597 A3 EP0255597 A3 EP 0255597A3
Authority
EP
European Patent Office
Prior art keywords
low alloy
alloy steels
contain
manganese
precipitated
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.)
Granted
Application number
EP87109046A
Other languages
German (de)
Other versions
EP0255597B1 (en
EP0255597A2 (en
Inventor
Bernd Dr. Ing. Huchtemann
Serosh Dr. Ing. Engineer
Volker Dipl.-Ing. Schuler
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.)
Thyssen Stahl AG
Original Assignee
Thyssen Edelstahlwerke 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25845343&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0255597(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thyssen Edelstahlwerke AG filed Critical Thyssen Edelstahlwerke AG
Priority to AT87109046T priority Critical patent/ATE70567T1/en
Publication of EP0255597A2 publication Critical patent/EP0255597A2/en
Publication of EP0255597A3 publication Critical patent/EP0255597A3/en
Application granted granted Critical
Publication of EP0255597B1 publication Critical patent/EP0255597B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Laminated Bodies (AREA)
  • Liquid Crystal Substances (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention relates to a micro-alloyed pearlitic steels contain 0.20 to 0.50% C, 0.40 to 1.0% Si, 0,80 to 1,80% Mn, 0.008 to 0.2% S, 0 to 0.7% Cr, 0 to 0.1% Al, 0 to 0.04% N, 0.01 to 0.05% Ti, remainder iron and impurities resulting from the melting process, with mixed sulphides (manganese, titanium carbonitrides, and the like) precipitated on the grain boundaries. The steel may preferably contain an additional content of up to 0.20% V and/or up to 0.10% Nb.
EP87109046A 1986-07-05 1987-06-24 Low alloy steels Expired - Lifetime EP0255597B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87109046T ATE70567T1 (en) 1986-07-05 1987-06-24 MICROALLOY STEELS.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3622735 1986-07-05
DE3622735 1986-07-05
DE3719569A DE3719569C2 (en) 1986-07-05 1987-06-12 Microalloyed steels.
DE3719569 1987-06-12

Publications (3)

Publication Number Publication Date
EP0255597A2 EP0255597A2 (en) 1988-02-10
EP0255597A3 true EP0255597A3 (en) 1989-01-11
EP0255597B1 EP0255597B1 (en) 1991-12-18

Family

ID=25845343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109046A Expired - Lifetime EP0255597B1 (en) 1986-07-05 1987-06-24 Low alloy steels

Country Status (8)

Country Link
US (1) US4838963A (en)
EP (1) EP0255597B1 (en)
KR (1) KR880003023A (en)
AT (1) ATE70567T1 (en)
DE (2) DE3719569C2 (en)
ES (1) ES2027998T3 (en)
FI (1) FI88625B (en)
GR (1) GR3003399T3 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4014072A1 (en) * 1989-06-09 1990-12-20 Thyssen Edelstahlwerke Ag USE OF ELIGIBLE FERRITIC-PERLITIC (AFP) STEELS AS A MATERIAL FOR GAS EXCHANGE VALVES OF COMBUSTION ENGINES
US5221373A (en) * 1989-06-09 1993-06-22 Thyssen Edelstahlwerke Ag Internal combustion engine valve composed of precipitation hardening ferritic-pearlitic steel
DE4017973A1 (en) * 1989-06-09 1990-12-13 Thyssen Edelstahlwerke Ag Precipitation hardenable ferritic pearlitic steel
US5136992A (en) * 1990-07-12 1992-08-11 Mahle Gmbh Piston for internal combustion engines with forged sections made of steel
DE4024381C2 (en) * 1990-08-01 1999-01-28 Mahle Gmbh Pistons for internal combustion engines with forged areas made of steel
DE4109628C2 (en) * 1990-07-12 1997-04-17 Mahle Gmbh Use of a precipitation hardening ferritic pearlitic steel
DE4137240A1 (en) * 1991-11-13 1993-05-19 Thyssen Edelstahlwerke Ag AFP steel used for prodn. of large forged tools - has low sulphur content and uniformly high tensile strength through tempering
US5282906A (en) * 1992-01-16 1994-02-01 Inland Steel Company Steel bar and method for producing same
ES2128240B1 (en) * 1996-07-26 2000-01-01 Gsb Grupo Siderurgico Vasco S PROCEDURE FOR THE MANUFACTURE OF MICROALLOYED STEELS.
US6083455A (en) * 1998-01-05 2000-07-04 Sumitomo Metal Industries, Ltd. Steels, steel products for nitriding, nitrided steel parts
DE102006007148A1 (en) * 2006-02-16 2007-08-30 Volkswagen Ag Piston for internal combustion engines and method for producing a piston for internal combustion engines
CN100469918C (en) * 2007-05-28 2009-03-18 无锡市恒特力金属制品有限公司 Nb microalloying high strength power metallurgy material and forming method thereof
JP4609585B2 (en) * 2008-06-06 2011-01-12 住友金属工業株式会社 Soft nitriding steel, soft nitriding steel and crankshaft
US8241442B2 (en) 2009-12-14 2012-08-14 Arcelormittal Investigacion Y Desarrollo, S.L. Method of making a hypereutectoid, head-hardened steel rail

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2023915A1 (en) * 1968-11-22 1970-08-21 Nippon Kokan Kk
FR2087818A5 (en) * 1970-03-20 1971-12-31 British Steel Corp
DE2116357A1 (en) * 1970-03-26 1972-02-03 Nippon Steel Corp High strength steel and process for its manufacture
DE1608162B1 (en) * 1967-11-13 1972-06-29 Hoesch Ag USE OF FLAT STEEL PRODUCTS
FR2274704A1 (en) * 1974-06-15 1976-01-09 Ferrotest Gmbh High-tensile steel bars for reinforcing concrete - with optimum formability, weldability and fatigue strength

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5638448A (en) * 1979-09-03 1981-04-13 Nippon Steel Corp Nonrefined tough steel
JPS5716114A (en) * 1980-07-03 1982-01-27 Daido Steel Co Ltd Manufacture of steel for hardening by high frequency

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1608162B1 (en) * 1967-11-13 1972-06-29 Hoesch Ag USE OF FLAT STEEL PRODUCTS
FR2023915A1 (en) * 1968-11-22 1970-08-21 Nippon Kokan Kk
FR2087818A5 (en) * 1970-03-20 1971-12-31 British Steel Corp
DE2116357A1 (en) * 1970-03-26 1972-02-03 Nippon Steel Corp High strength steel and process for its manufacture
FR2274704A1 (en) * 1974-06-15 1976-01-09 Ferrotest Gmbh High-tensile steel bars for reinforcing concrete - with optimum formability, weldability and fatigue strength

Also Published As

Publication number Publication date
DE3719569C2 (en) 1988-06-23
ATE70567T1 (en) 1992-01-15
GR3003399T3 (en) 1993-02-17
US4838963A (en) 1989-06-13
DE3719569A1 (en) 1988-01-21
KR880003023A (en) 1988-05-13
EP0255597B1 (en) 1991-12-18
FI872933A0 (en) 1987-07-02
DE3775298D1 (en) 1992-01-30
ES2027998T3 (en) 1992-07-01
FI872933A (en) 1988-01-06
FI88625B (en) 1993-02-26
EP0255597A2 (en) 1988-02-10

Similar Documents

Publication Publication Date Title
EP0255597A3 (en) Low alloy steels
GB8505647D0 (en) Bearing steel
CA2086283A1 (en) Low-yield-ratio high-strength hot-rolled steel sheet and method of manufacturing the same
AU525295B2 (en) Austenitic wear resistant steel
EP0237721A3 (en) Aluminium-killed heat-treatable steel
CA2308794A1 (en) Tin-bearing free-machining steel
GB2234985A (en) Production of bake-hardenable steel sheet
JPS57188652A (en) High-strength austenite steel with superior cold work hardenability
Kos Hadfield Type Manganese Steel and Process for the Manufacture Thereof
JPS644457A (en) Low alloy tufftrided steel
JPS56256A (en) Property-controlled steel excellent in welding crack sensitivity and having high tensile strength of 80kg/ 2
Filippi The Use of Trace Elements in Conjunction with Aluminium for the Control of Austenitic Grain Size in Alloy Structural Steels
Vilcko et al. Possibilities of the Rationalization of the Melting of Hadfield's Manganese Steels
de Meyer et al. Steel Alloys, Particularly for Tubes for Bicycle Frames
Al-Erhayem From Common Steel to High-Strength Steel. I
JPS5358919A (en) Low alloy steel with hydrogen stress cracking resistance
Urita et al. Steel for Induction Hardening
Malyi et al. Improving the Machinability of a High-Strength Cast Iron by Microalloying With Tin
Drobyshevskaya et al. Microadditions of Elements Forming Carbonitrides to 30 KhNMA Steel
Huchtemann et al. Micro-Alloyed Steels
KR930002743B1 (en) Non-quenched and tempered steel
Venkatadri et al. Recoveries of Niobium and Vanadium in HSLA and Pipeline Steels Produced at Rourkela Steel Plant
Normann et al. Austenitic Manganese Steel of the Hadfield Type, and Process for the Manufacture Thereof
Popandopulo et al. The Influence of Nitrogen on the Austenite Stabilization in the Tungsten--Molybdenum High Speed Steel
IT1250732B (en) Non-refined high toughness steels and method for their manufacture

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 DE ES FR GB GR 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 DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19890609

17Q First examination report despatched

Effective date: 19910430

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 70567

Country of ref document: AT

Date of ref document: 19920115

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3775298

Country of ref document: DE

Date of ref document: 19920130

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19920507

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920521

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920525

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920526

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19920529

Year of fee payment: 6

Ref country code: AT

Payment date: 19920529

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19920603

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19920609

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19920610

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920630

Year of fee payment: 6

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2027998

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920729

Year of fee payment: 6

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: KRUPP STAHL AKTIENGESELLSCHAFT

Effective date: 19920904

EPTA Lu: last paid annual fee
26 Opposition filed

Opponent name: GERLACH-WERKE GMBH

Effective date: 19920918

Opponent name: IMATRA STEEL OY AB

Effective date: 19920918

Opponent name: KLOECKNER-WERKE AG

Effective date: 19920917

Opponent name: KRUPP STAHL AKTIENGESELLSCHAFT

Effective date: 19920904

NLR1 Nl: opposition has been filed with the epo

Opponent name: GERLACH-WERKE GMBH.

Opponent name: IMATRA STEEL OY AB.

Opponent name: KLOECKNER-WERKE AG.

Opponent name: KRUPP STAHL AKTIENGESELLSCHAFT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930624

Ref country code: AT

Effective date: 19930624

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930625

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930630

Ref country code: BE

Effective date: 19930630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF REVOCATION BY EPO

Effective date: 19931031

BERE Be: lapsed

Owner name: THYSSEN EDELSTAHLWERKE A.G.

Effective date: 19930630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19931231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940101

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930624

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940301

R26 Opposition filed (corrected)

Opponent name: KRUPP STAHL AKTIENGESELLSCHAFT * 920917 KLOECKNER-

Effective date: 19920904

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

RDAC Information related to revocation of patent modified

Free format text: ORIGINAL CODE: 0009299REVO

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19940314

R27W Patent revoked (corrected)

Effective date: 19940314

REG Reference to a national code

Ref country code: GR

Ref legal event code: MF4A

Free format text: 3003399

EUG Se: european patent has lapsed

Ref document number: 87109046.0

Effective date: 19940110