EP2553132B1 - Stahlprodukt mit verbesserten witterungseigenschaften in einer salzigen umgebung - Google Patents

Stahlprodukt mit verbesserten witterungseigenschaften in einer salzigen umgebung Download PDF

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Publication number
EP2553132B1
EP2553132B1 EP20100712049 EP10712049A EP2553132B1 EP 2553132 B1 EP2553132 B1 EP 2553132B1 EP 20100712049 EP20100712049 EP 20100712049 EP 10712049 A EP10712049 A EP 10712049A EP 2553132 B1 EP2553132 B1 EP 2553132B1
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EP
European Patent Office
Prior art keywords
steel
steel product
saline
product according
weathering
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.)
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Application number
EP20100712049
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English (en)
French (fr)
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EP2553132A1 (de
Inventor
Joachim Antonissen
Eddy De Grave
Julieth Alexandra Mejia Gomez
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.)
ArcelorMittal SA
Original Assignee
ArcelorMittal Investigacion y Desarrollo SL
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 ArcelorMittal Investigacion y Desarrollo SL filed Critical ArcelorMittal Investigacion y Desarrollo SL
Priority to PL10712049T priority Critical patent/PL2553132T3/pl
Publication of EP2553132A1 publication Critical patent/EP2553132A1/de
Application granted granted Critical
Publication of EP2553132B1 publication Critical patent/EP2553132B1/de
Priority to HRP20150826TT priority patent/HRP20150826T1/hr
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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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • 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
    • C22C38/02—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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/42—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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium

Definitions

  • the present invention is related to steel types and products made thereof, which exhibit an increase in corrosion resistance when exposed to a chlorine-rich environment. These steels are known as weathering steels.
  • JP2006118011 in the form of a steel composition comprising C, Al, Si, P, Ni, Cu, N, with Sn and/or Sb added in an amount between 0.03 and 0.5wt% and one or more of Ti, Nb, Mo, W, V, Ca or Mg, with the mass ratio of Ni/Cu smaller than or equal to 0.5.
  • the weathering capability in saline environment is mainly obtained by the presence of Sb and/or Sn, which stabilize the amount of Fe2+ ions when the steel is in a wet and saline environment, by reacting with Fe3+ ions, produced by oxidation of Fe2+.
  • Sn and/or Sb is disadvantageous for various reasons :
  • JP-A-2001 262 271 discloses a high tensile strength steel sheet excellent in adhesion of electroplating and ductility.
  • the present invention aims to provide a weathering steel with a Ni-content in the same order of magnitude as in traditional weathering steels, and with an increased corrosion resistance in marine or seaside conditions, as well as with excellent mechanical properties.
  • the invention is related to a steel product as disclosed in the appended claims.
  • the invention is in particular related to a steel product as disclosed in the main independent claim, suitable for use in outdoor environments, in particular in saline conditions.
  • the steel product of the invention may be any type of construction element such as a steel sheet or beam.
  • the invention is related to a steel composition characterized by the following contents (in wt%) :
  • the following narrower ranges are defined for Cu, Ti, Cr, Ni and Nb (in wt%) :
  • the steel product according to the invention comprises no Sn and no Sb.
  • the present invention is related to a steel product of the weathering steel type, i.e. a product exhibiting increased corrosion resistance after having been exposed to the outside environment for a given time.
  • the steel product is defined by a composition consisting of (in wt%):
  • the amounts of Cu, Ti, Cr, Ni and Nb are as follows (in wt%) :
  • the present invention reveals that the inventive steel compositions favour the formation of fine grained goethite ( ⁇ -FeOOH) in the corrosion layer forming on the surface of a steel product having these compositions, due to the specific combined Al and Si content.
  • fine grained goethite' is meant goethite with grain sizes from about 8nm to about 15nm. The formation of such fine grained goethite is beneficial for the stability of the oxide layer in saline conditions.
  • inventive compositions do not necessarily include an addition of significant amounts of Ni, regarded as beneficial for weathering resistance in saline conditions.
  • inventive compositions do not comprise Sn and Sb above an accidental impurity level.
  • the steel product of the invention comprises no Sb or Sn. Elements such as Nb, Ti, Cu, Cr are added for improving the mechanical properties of the steel.
  • the invention is related to any type of steel product having the composition as claimed, e.g. steel sheets or beams, obtained by any standard steel-making process, e.g. hot-rolled or cold-rolled sheets or beams.
  • Table 1 shows the compositions of 3 test samples S1 to S3 having Al and Si contents within the claimed invention, as well as 2 comparative samples C1 and C2 having Al and Si contents falling outside the claimed ranges and/or wherein the combined Al and Si content is less than 0.85wt%.
  • the samples are outside the subject matter of the appended claims because of the presence of Molybdenum in S1 and the lower levels of Ti, Cu, Ni, Cr and Nb. They are however illustrative of the influence of the combined presence of Al and Si on the goethite formation, and hence on the weathering steel behaviour of products of the invention.
  • test samples have been obtained by standard steel processing methods, involving at least a hot rolling step, possibly followed by a cold rolling step.
  • the samples were subjected to a dip-dry test during 60 days, using a 0.05M NaCl solution, in order to test weatherability behaviour in saline conditions.
  • oxide layers were formed on the samples.
  • the composition of these oxide layers was investigated by Mössbauer spectroscopy, used in particular to measure the relative area of superparamagnetic goethite in the oxide layer.
  • Superparamagnetic goethite has a particle size between 8 and 15nm, as opposed to antiferromagnetic goethite, having particle sizes above 15nm.
  • Table 2 clearly shows that the combined Al and Si contents according to the present invention give rise to a considerable increase in the relative area of fine-grained goethite in the oxide layer.
  • Table 1 example compositions (in wt%) Sample C Si Al P Mn S N Ti Mo Cu Ni Cr S1 0.19 0.35 1.2 0.077 1.6 0.006 0.005 0.007 0.025 0.02 0.025 0.025 S2 0.07 1 0.03 0.02 0.5 0.003 0.003 - - 0.3 - - S3 0.07 0.25 0.8 0.02 0.5 0.003 0.003 - - 0.3 - - C1 0.07 0.25 0.4 0.02 0.5 0.003 0.003 - - 0.3 - - C2 0.03 0 1 0.01 1.8 0.003 0.007 - - 0.4 - - Table 2:Relative area of superparamagnetic goethite (in %) Sample % S1 51 S2 40 S3 29 C1 15 C3 16

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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Chemical Treatment Of Metals (AREA)

Claims (5)

  1. Ein Stahlprodukt, das besteht aus (in Gew.-%):
    - Kohlenstoff zwischen 0,03 und 0,2,
    - Mangan zwischen 0,5 und 2,
    - Kupfer zwischen 0,2 und 0,4,
    - Titan zwischen 0,01 und 0,07,
    - Chrom zwischen 0,2 und 0,5,
    - Nickel zwischen 0,1 und 0,2,
    - Niob zwischen 0,02 und 0,1,
    - Stickstoff zwischen 0 und 0,01,
    - Schwefel zwischen 0 und 0,01,
    - Phosphor zwischen 0 und 0,01,
    - Aluminium zu mindestens 0 und höchstens 1,5,
    - Silicium zwischen 0,25 und 1,5,
    wobei der Rest Fe und zufällige Verunreinigungen sind, und wobei die Summe der Al- und Si-Spiegel mehr als 0,85 Gew.-% ist.
  2. Das Stahlprodukt nach Anspruch 1, das kein Sn und kein Sb umfasst.
  3. Ein Stahlprodukt nach Anspruch 1 oder 2, wobei das besagte Produkt ein Blech oder ein Träger ist.
  4. Verwendung eines Stahlprodukts nach irgendeinem der vorstehenden Ansprüche als Produkt, das eine erhöhte Korrosionsbeständigkeit aufweist, wenn es einer chlorreichen Umgebung ausgesetzt wird.
  5. Verwendung eines Produkts nach einem der Ansprüche 1 bis 3 unter salzhaltigen Außenbedingungen.
EP20100712049 2010-03-29 2010-03-29 Stahlprodukt mit verbesserten witterungseigenschaften in einer salzigen umgebung Active EP2553132B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL10712049T PL2553132T3 (pl) 2010-03-29 2010-03-29 Produkt stalowy z ulepszoną charakterystyką nierdzewienia w warunkach zasolonych
HRP20150826TT HRP20150826T1 (hr) 2010-03-29 2015-07-30 Äśeliäśni proizvod s poboljšanom otpornosti na vremenske karakteristike u slanom okolišu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/054086 WO2011120550A1 (en) 2010-03-29 2010-03-29 Steel product with improved weathering characteristics in saline environment

Publications (2)

Publication Number Publication Date
EP2553132A1 EP2553132A1 (de) 2013-02-06
EP2553132B1 true EP2553132B1 (de) 2015-05-06

Family

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EP20100712049 Active EP2553132B1 (de) 2010-03-29 2010-03-29 Stahlprodukt mit verbesserten witterungseigenschaften in einer salzigen umgebung

Country Status (12)

Country Link
US (1) US20130078135A1 (de)
EP (1) EP2553132B1 (de)
CN (1) CN102884214B (de)
BR (1) BR112012024642B1 (de)
CA (1) CA2793294C (de)
DK (1) DK2553132T3 (de)
ES (1) ES2544576T3 (de)
HR (1) HRP20150826T1 (de)
PL (1) PL2553132T3 (de)
PT (1) PT2553132E (de)
WO (1) WO2011120550A1 (de)
ZA (1) ZA201207137B (de)

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CN102650015A (zh) * 2012-05-29 2012-08-29 江苏省沙钢钢铁研究院有限公司 一种经济型细晶粒高韧性耐候中厚钢板及其生产方法
US20140170015A1 (en) * 2012-12-17 2014-06-19 Grzegorz Jan Kusinski Corrosion resistant steel composition
CN103074548B (zh) * 2013-01-24 2016-02-24 宝山钢铁股份有限公司 一种高耐蚀型高强度含Al耐候钢板及其制造方法
JP6180956B2 (ja) * 2014-02-13 2017-08-16 株式会社神戸製鋼所 耐食性に優れる塗装鋼材
JP6405910B2 (ja) * 2014-11-10 2018-10-17 新日鐵住金株式会社 耐食鋼材
CN104878322B (zh) * 2015-05-14 2017-01-04 中天钢铁集团有限公司 一种低碳耐候钢的生产工艺
WO2020084332A1 (en) * 2018-10-23 2020-04-30 Arcelormittal Hot-rolled steel plate and a method of manufacturing thereof
CN111101071B (zh) * 2020-02-25 2021-04-13 湖南华菱涟源钢铁有限公司 一种高强度耐候钢及其生产方法
CN112593158B (zh) * 2020-12-11 2021-11-30 湖南华菱涟源钢铁有限公司 690MPa耐低温超高强耐候钢板及制备方法
CN113667883A (zh) * 2021-07-27 2021-11-19 包头钢铁（集团）有限责任公司 一种高寒地区用稀土微合金化耐候桥梁钢的制造方法

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Also Published As

Publication number Publication date
PL2553132T3 (pl) 2015-10-30
US20130078135A1 (en) 2013-03-28
CA2793294A1 (en) 2011-10-06
BR112012024642A2 (pt) 2016-06-07
BR112012024642B1 (pt) 2018-02-06
CA2793294C (en) 2015-09-29
WO2011120550A1 (en) 2011-10-06
CN102884214B (zh) 2015-09-09
EP2553132A1 (de) 2013-02-06
HRP20150826T1 (hr) 2015-11-20
ZA201207137B (en) 2014-04-30
ES2544576T3 (es) 2015-09-01
PT2553132E (pt) 2015-09-10
CN102884214A (zh) 2013-01-16
DK2553132T3 (en) 2015-07-27

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