EP3164524B2 - Aluminium alloy for use in the building industry - Google Patents

Aluminium alloy for use in the building industry

Info

Publication number
EP3164524B2
EP3164524B2 EP15728541.2A EP15728541A EP3164524B2 EP 3164524 B2 EP3164524 B2 EP 3164524B2 EP 15728541 A EP15728541 A EP 15728541A EP 3164524 B2 EP3164524 B2 EP 3164524B2
Authority
EP
European Patent Office
Prior art keywords
sheet product
aluminium alloy
content
product according
rolled sheet
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.)
Active
Application number
EP15728541.2A
Other languages
German (de)
French (fr)
Other versions
EP3164524B1 (en
EP3164524A1 (en
Inventor
Steven Kirkham
Bernd JACOBY
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.)
Novelis Koblenz GmbH
Original Assignee
Novelis Koblenz GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=51059345&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3164524(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Novelis Koblenz GmbH filed Critical Novelis Koblenz GmbH
Priority to PL15728541.2T priority Critical patent/PL3164524T5/en
Publication of EP3164524A1 publication Critical patent/EP3164524A1/en
Publication of EP3164524B1 publication Critical patent/EP3164524B1/en
Application granted granted Critical
Publication of EP3164524B2 publication Critical patent/EP3164524B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001—Aluminium or its alloys

Definitions

  • the invention relates to a rolled Al-Si-Mg-Mn alloy sheet product.
  • the sheet product is ideally used for outdoor use in the building industry, for example in the form of trapezoidal sheet.
  • aluminium alloy sheet products in the art for use in the building industry include: The AA4017 alloy registered with the Aluminium Association in 1995 and consisting of, in wt.%: Si 0.6 - 1.6 Fe up to 0.7 Cu 0.10 - 0.50 Mn 0.6 - 1.2 Mg 0.10 - 0.50 Zn up to 0.20, others and unavoidable impurities, each 0.05% max, total 0.15%, remainder aluminium.
  • Each of European patent document EP-1484420-A1 and EP-1484421-A1 disclose an aluminium alloy product in the form of a sheet or extrusion having a composition of, in wt.%: Si 1.2 - 2.2, preferably 1.4 - 2, Fe ⁇ 1.5, preferably ⁇ 0.7, Cu 0.2 - 0.8, preferably 0.3 - 0.5, Mn 0.6 - 1.5, preferably 0.9 - 1.2, Mg ⁇ 0.20, preferably ⁇ 0.15, Zn ⁇ 0.5 Ti ⁇ 0.10, remainder aluminium and unavoidable impurities.
  • aluminium alloy designations and temper designations refer to the Aluminium Association designations in Aluminium Standards and Data and the Registration Records, as published by the Aluminium Association in 2014 and are well known to the person skilled in the art.
  • sheet or “sheet product” refers to a rolled product form in the gauge range of 0.2 to 3 mm in thickness at final gauge.
  • the present invention provides a rolled aluminium alloy sheet product for outdoor use in the building industry, wherein the aluminium alloy has the following composition, in wt.%: Si 1.10 - 1.6 Mg 0.25 - 0.40 Mn 0.6 - 1.6 Cu 0.10 - 0.6 Fe 0.05 - 0.7 Ti 0.05 - 0.20 Zn up to 0.4, others and unavoidable impurities, each 0.05% max, total 0.25%, balance aluminium.
  • the rolled aluminium alloy sheet product according to this invention provides a good balance in strength, improved corrosion resistance and good formability, in particular good roll formability.
  • a further advantage of the rolled aluminium alloy sheet product is that it can absorb substantial amounts of Si-containing brazing sheet scrap material originating from the industrial scale production of brazing sheet material.
  • the Mn-content is at least 0.70%, and preferably at least 0.75%.
  • a preferred upper-limit for the Mn-content at most 1.4% and more preferably at most 1.20%.
  • the Cu-content is at least 0.15%.
  • the Cu-content is preferably at most 0.5%.
  • the Cu-content is at most 0.4%, and preferably at most 0.35%.
  • the Fe-content is at least 0.10%.
  • the Fe-content is most 0.7%, and preferably is at most 0.45%.
  • Zn can be tolerated to substantial levels as an impurity element or can be added purposively.
  • the Zn-content is at most 0.25%, and preferably at most 0.20%.
  • the Zn-content is at most 0.10%, and more preferably at most 0.07%, such that the aluminium alloy is substantially free from Zn.
  • the Mg-content is least 0.25% to increase the strength and formability of the sheet product.
  • the upper-limit for the Mg-content is 0.40%.
  • the Si-content is at least 1.10% to increase the strength and formability of the sheet product. In an embodiment the Si-content is at least 1.20%. A preferred upper-limit for the Si-content is 1.50%, and preferably 1.45%.
  • the Ti is purposively added to the aluminium alloy in a range of 0.05% to 0.20% to enhance the strength and the corrosion resistance, in particular the resistance against pitting corrosion is improved making the sheet product ideally suitable for outdoor use in amongst others the building industry.
  • a preferred lower limit for the Ti-content is 0.07%, and more preferably 0.08%.
  • a preferred upper limit for the Ti-content is 0.17%, preferably 0.15%, and more preferably 0.14%.
  • Zr is preferably not added to the aluminium alloy of the invention, but can be present as an unavoidable impurity element at a level of ⁇ 0.05%, and preferably ⁇ 0.03%, such that the aluminium alloy is substantially free from Zr.
  • Cr is preferably not added to the aluminium alloy of the invention, but can be present as an unavoidable impurity element at a level of ⁇ 0.05%, and preferably ⁇ 0.03%, such that the aluminium alloy is substantially free from Cr.
  • the aluminium alloy sheet product is a bare sheet product, meaning that on either side it is devoid of any metallic layer(s) covering substantial parts of the sheet product.
  • metallic layer(s) are commonly applied by roll bonding or casting techniques for in amongst others brazing sheet products in order to enhance the corrosion performance by providing sacrificial protection to the core alloy or to provide a filler metal, typically an AlSi alloy, for the brazing operation.
  • Such metallic layer(s) have typically a thickness of 4% to up to 15% or more of the total product thickness should the aluminium alloy product have been clad on one or both sides.
  • the aluminium alloy sheet product can be provided however with a very thin conversion coating to enhance for example the adhesion of any applied organic coating layer, e.g. a paint layer or lacquer.
  • a very thin conversion coating to enhance for example the adhesion of any applied organic coating layer, e.g. a paint layer or lacquer.
  • the aluminium alloy sheet product can be provided with a textured surface structure via sheet metal embossing to provide an attractive surface appearance in the use for building applications such as façade and roof structures.
  • the aluminium alloy sheet product can be provided in an O-temper or an H-temper, in particular a temper selected from the group of H12, H14, H16, H18, H22, H26 temper.
  • the invention in a further aspect of the invention relates to the use, or to a method of use, of the rolled aluminium alloy sheet product according to this invention for outdoor use in the building industry, signposting or decoration.
  • Preferred examples for use in the building industry are façade structures or façade panels, garage doors and metal standing seam roofs.
  • Such applications typically comprise folded or roll formed structures, which may take benefit from the good formability and corrosion resistance of the sheet product in accordance with this invention.
  • a preferred embodiment of the sheet product concerns its use as trapezoidal sheet.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Finishing Walls (AREA)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Description

    FIELD OF THE INVENTION
  • The invention relates to a rolled Al-Si-Mg-Mn alloy sheet product. The sheet product is ideally used for outdoor use in the building industry, for example in the form of trapezoidal sheet.
    • BACKGROUND TO THE INVENTION
  • Some aluminium alloy sheet products in the art for use in the building industry include:
    The AA4017 alloy registered with the Aluminium Association in 1995 and consisting of, in wt.%:
    Si 0.6 - 1.6
    Fe up to 0.7
    Cu 0.10 - 0.50
    Mn 0.6 - 1.2
    Mg 0.10 - 0.50
    Zn up to 0.20,
    others and unavoidable impurities, each 0.05% max, total 0.15%, remainder aluminium.
  • Each of European patent document EP-1484420-A1 and EP-1484421-A1 disclose an aluminium alloy product in the form of a sheet or extrusion having a composition of, in wt.%:
    Si 1.2 - 2.2, preferably 1.4 - 2,
    Fe < 1.5, preferably < 0.7,
    Cu 0.2 - 0.8, preferably 0.3 - 0.5,
    Mn 0.6 - 1.5, preferably 0.9 - 1.2,
    Mg < 0.20, preferably < 0.15,
    Zn < 0.5
    Ti < 0.10,
    remainder aluminium and unavoidable impurities.
    • DESCRITION OF THE INVENTION
  • As will be appreciated herein below, except as otherwise indicated, aluminium alloy designations and temper designations refer to the Aluminium Association designations in Aluminium Standards and Data and the Registration Records, as published by the Aluminium Association in 2014 and are well known to the person skilled in the art.
  • For any description of alloy compositions or preferred alloy compositions, all references to percentages are by weight percent unless otherwise indicated.
  • For this invention the term "sheet" or "sheet product" refers to a rolled product form in the gauge range of 0.2 to 3 mm in thickness at final gauge.
  • It is an object of the invention to provide a rolled Al-Si-Mg-Mn alloy sheet product for outdoor use in the building industry providing a balance of strength, corrosion resistance and good formability.
  • This and other objects and further advantages are met or exceeded by the present invention and providing a rolled aluminium alloy sheet product for outdoor use in the building industry, wherein the aluminium alloy has the following composition, in wt.%:
    Si 1.10 - 1.6
    Mg 0.25 - 0.40
    Mn 0.6 - 1.6
    Cu 0.10 - 0.6
    Fe 0.05 - 0.7
    Ti 0.05 - 0.20
    Zn up to 0.4,
    others and unavoidable impurities, each 0.05% max, total 0.25%, balance aluminium.
  • The rolled aluminium alloy sheet product according to this invention provides a good balance in strength, improved corrosion resistance and good formability, in particular good roll formability. A further advantage of the rolled aluminium alloy sheet product is that it can absorb substantial amounts of Si-containing brazing sheet scrap material originating from the industrial scale production of brazing sheet material.
  • In an embodiment of the aluminium alloy the Mn-content is at least 0.70%, and preferably at least 0.75%. A preferred upper-limit for the Mn-content at most 1.4% and more preferably at most 1.20%.
  • In an embodiment of the aluminium alloy the Cu-content is at least 0.15%. The Cu-content is preferably at most 0.5%. In an embodiment the Cu-content is at most 0.4%, and preferably at most 0.35%.
  • In an embodiment of the aluminium alloy the Fe-content is at least 0.10%. The Fe-content is most 0.7%, and preferably is at most 0.45%.
  • Zn can be tolerated to substantial levels as an impurity element or can be added purposively. However, in an embodiment of the aluminium alloy the Zn-content is at most 0.25%, and preferably at most 0.20%. In a further embodiment the Zn-content is at most 0.10%, and more preferably at most 0.07%, such that the aluminium alloy is substantially free from Zn.
  • In the aluminium alloy the Mg-content is least 0.25% to increase the strength and formability of the sheet product. The upper-limit for the Mg-content is 0.40%.
  • In the aluminium alloy the Si-content is at least 1.10% to increase the strength and formability of the sheet product. In an embodiment the Si-content is at least 1.20%. A preferred upper-limit for the Si-content is 1.50%, and preferably 1.45%.
  • The Ti is purposively added to the aluminium alloy in a range of 0.05% to 0.20% to enhance the strength and the corrosion resistance, in particular the resistance against pitting corrosion is improved making the sheet product ideally suitable for outdoor use in amongst others the building industry. A preferred lower limit for the Ti-content is 0.07%, and more preferably 0.08%. A preferred upper limit for the Ti-content is 0.17%, preferably 0.15%, and more preferably 0.14%.
  • Zr is preferably not added to the aluminium alloy of the invention, but can be present as an unavoidable impurity element at a level of <0.05%, and preferably <0.03%, such that the aluminium alloy is substantially free from Zr.
  • Cr is preferably not added to the aluminium alloy of the invention, but can be present as an unavoidable impurity element at a level of <0.05%, and preferably <0.03%, such that the aluminium alloy is substantially free from Cr.
  • For the purpose of this invention the aluminium alloy sheet product is a bare sheet product, meaning that on either side it is devoid of any metallic layer(s) covering substantial parts of the sheet product. Such metallic layer(s) are commonly applied by roll bonding or casting techniques for in amongst others brazing sheet products in order to enhance the corrosion performance by providing sacrificial protection to the core alloy or to provide a filler metal, typically an AlSi alloy, for the brazing operation. Such metallic layer(s) have typically a thickness of 4% to up to 15% or more of the total product thickness should the aluminium alloy product have been clad on one or both sides.
  • The aluminium alloy sheet product can be provided however with a very thin conversion coating to enhance for example the adhesion of any applied organic coating layer, e.g. a paint layer or lacquer.
  • The aluminium alloy sheet product can be provided with a textured surface structure via sheet metal embossing to provide an attractive surface appearance in the use for building applications such as façade and roof structures.
  • The aluminium alloy sheet product can be provided in an O-temper or an H-temper, in particular a temper selected from the group of H12, H14, H16, H18, H22, H26 temper.
  • In a further aspect of the invention it relates to the use, or to a method of use, of the rolled aluminium alloy sheet product according to this invention for outdoor use in the building industry, signposting or decoration. Preferred examples for use in the building industry are façade structures or façade panels, garage doors and metal standing seam roofs. Such applications typically comprise folded or roll formed structures, which may take benefit from the good formability and corrosion resistance of the sheet product in accordance with this invention. A preferred embodiment of the sheet product concerns its use as trapezoidal sheet.

Claims (14)

  1. A rolled aluminium alloy sheet product for outdoor use in the building industry, wherein the aluminium alloy has the following composition, in wt.%: Si 1.10 - 1.6 Mg 0.25 - 0.40 Mn 0.6 - 1.6 Cu 0.10 - 0.6 Fe 0.05 - 0.7 Ti 0.05 - 0.20 Zn up to 0.4,
    others and unavoidable impurities, each 0.05% max, total 0.25%, balance aluminium.
  2. A rolled sheet product according to claim 1, wherein the Mn content is at least 0.70%, and preferably at least 0.75%.
  3. A rolled sheet product according to claim 1 or 2, wherein the Mn content is at most 1.4%, and preferably at most 1.20%.
  4. A rolled sheet product according to any one of claim 1 to 3, wherein the Cu-content is at least 0.15%, and preferably at most 0.5%, and more preferably at most 0.4%.
  5. A rolled sheet product according to any one of claims 1 to 4, wherein the Zn-content is at most 0.25%, and preferably at most 0.20%.
  6. A rolled sheet product according to any one of claims 1 to 5, wherein the Ti-content is at least 0.07%, and preferably at least 0.08%.
  7. A rolled sheet product according to any one of claims 1 to 6, wherein the Ti content is at most 0.17%, and preferably at most 0.15%.
  8. A rolled sheet product according to any one of claims 1 to 7, wherein the Si-content is at most 1.50%, and more preferably at most 1.45%.
  9. A rolled sheet product according to any one of claims 1 to 8, wherein the sheet product is devoid of any metallic clad layers.
  10. A rolled sheet product according to any one of claims 1 to 9, wherein the sheet product is provided with an organic coating.
  11. A rolled sheet product according to any one of claims 1 to 9, wherein the sheet product is provided with a surface structure via sheet metal embossing.
  12. A rolled sheet product according to any one of claims 1 to 11 in the form of trapezoidal sheet.
  13. Use of an aluminium alloy according to any one of claims 1 to 12 for outdoor use in the building industry, signposting or decoration.
  14. Use of an aluminium alloy according to any one of claims 1 to 12 in the form a trapezoidal sheet for outdoor use in the building industry.
EP15728541.2A 2014-07-04 2015-06-12 Aluminium alloy for use in the building industry Active EP3164524B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15728541.2T PL3164524T5 (en) 2014-07-04 2015-06-12 Aluminium alloy for use in the building industry

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14175706 2014-07-04
PCT/EP2015/063203 WO2016000937A1 (en) 2014-07-04 2015-06-12 Aluminium alloy for use in the building industry

Publications (3)

Publication Number Publication Date
EP3164524A1 EP3164524A1 (en) 2017-05-10
EP3164524B1 EP3164524B1 (en) 2019-10-30
EP3164524B2 true EP3164524B2 (en) 2025-09-03

Family

ID=51059345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15728541.2A Active EP3164524B2 (en) 2014-07-04 2015-06-12 Aluminium alloy for use in the building industry

Country Status (6)

Country Link
US (1) US20170175230A1 (en)
EP (1) EP3164524B2 (en)
CN (1) CN106661679A (en)
HU (1) HUE047959T2 (en)
PL (1) PL3164524T5 (en)
WO (1) WO2016000937A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109266888A (en) * 2018-12-03 2019-01-25 东北轻合金有限责任公司 A kind of 308 alloy cast ingot and its preparation method and application
CN109680190A (en) * 2019-01-31 2019-04-26 东莞市润华铝业有限公司 A kind of aluminum profile that can improve surface brightness and its preparation process
DE102020119466A1 (en) 2020-07-23 2022-01-27 Nussbaum Matzingen Ag Aluminum alloy and method of making an aluminum alloy
CN112746199B (en) * 2020-12-16 2022-05-31 银邦金属复合材料股份有限公司 Aluminum alloy for shutter and preparation method thereof

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JPH06264171A (en) † 1993-03-11 1994-09-20 Sumitomo Light Metal Ind Ltd Aluminum alloy plate material for blind and method for manufacturing the same
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JPH04371368A (en) † 1991-06-19 1992-12-24 Nippon Light Metal Co Ltd Brazing sheet with excellent corrosion resistance and manufacturing method
JPH06264171A (en) † 1993-03-11 1994-09-20 Sumitomo Light Metal Ind Ltd Aluminum alloy plate material for blind and method for manufacturing the same
WO2001036697A2 (en) † 1999-11-17 2001-05-25 Corus Aluminium Walzprodukte Gmbh Aluminium brazing alloy
US20040062946A1 (en) † 2002-06-24 2004-04-01 Rinze Benedictus Method of producing a high strength balanced Al-Mg-Si alloy and a weldable product of that alloy
EP1386975A1 (en) † 2002-08-01 2004-02-04 Hydro Aluminium Deutschland GmbH Aluminium alloy for strip production
FR2855833A1 (en) † 2003-06-05 2004-12-10 Pechiney Rhenalu LAMINATED OR ALUMINUM ALLOY WIRE WITH GOOD CORROSION RESISTANCE
JP2010168632A (en) † 2009-01-23 2010-08-05 Kobe Steel Ltd Aluminum alloy laminated plate excellent in fatigue characteristic

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Also Published As

Publication number Publication date
CN106661679A (en) 2017-05-10
EP3164524B1 (en) 2019-10-30
PL3164524T5 (en) 2025-12-01
US20170175230A1 (en) 2017-06-22
PL3164524T3 (en) 2020-04-30
WO2016000937A1 (en) 2016-01-07
HUE047959T2 (en) 2020-05-28
EP3164524A1 (en) 2017-05-10

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