WO2016000937A1 - Aluminium alloy for use in the building industry - Google Patents

Aluminium alloy for use in the building industry Download PDF

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Publication number
WO2016000937A1
WO2016000937A1 PCT/EP2015/063203 EP2015063203W WO2016000937A1 WO 2016000937 A1 WO2016000937 A1 WO 2016000937A1 EP 2015063203 W EP2015063203 W EP 2015063203W WO 2016000937 A1 WO2016000937 A1 WO 2016000937A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet product
preferably
aluminium alloy
product according
content
Prior art date
Application number
PCT/EP2015/063203
Other languages
French (fr)
Inventor
Steven Kirkham
Bernd JACOBY
Original Assignee
Aleris Rolled Products Germany 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
Priority to EP14175706.2 priority Critical
Priority to EP14175706 priority
Application filed by Aleris Rolled Products Germany Gmbh filed Critical Aleris Rolled Products Germany Gmbh
Publication of WO2016000937A1 publication Critical patent/WO2016000937A1/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B3/00Rolling 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
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B3/00Rolling 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
    • B21B2003/001Aluminium or its alloys

Abstract

The invention relates to a rolled aluminium alloy sheet product for outdoor use in the building industry, wherein the aluminium alloy has the following composition, in wt.%: Si 0.6 to 1.6, Mg 0.10 to 0.50, Mn 0.6 to 1.6, Cu 0.10 to 0.6, Fe 0.05 to 0.7, Ti 0.05 to 0.20, Zn up to 0.4, others and unavoidable impurities, each 0.05% max, total 0.25%, balance aluminium. Furthermore, the invention relates to the use of the sheet product for outdoor use in the building industry.

Description

Aluminium alloy for use in the building industry

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, alumini- urn 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 compo- sition, in wt.%: Si 0.6 - 1 .6

Mg 0.10 - 0.50

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 an embodiment of the aluminium alloy the Mg-content is at least 0.20%, and preferably at least 0.25%, to increase the strength and formability of the sheet product. A preferred upper-limit for the Mg-content is 0.45%, and more preferably 0.40%. In an embodiment of the aluminium alloy the Si-content is at least 0.90%, and preferably at least 1 .10%, to increase the strength and formability of the sheet product. In a further 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) cov- ering 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 AISi 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 fagade 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 fagade structures or fagade 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

A rolled aluminium alloy sheet product for outdoor use in the building industry, wherein the aluminium alloy has the following composition, in wt.%:
Si 0.6 - 1 .6
Mg 0.10 - 0.50
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.
A rolled sheet product according to claim 1 , wherein the Mn content is at least 0.70%, and preferably at least 0.75%.
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%.
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%.
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%.
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 Mg- content is at least 0.20%, and preferably at least 0.25%, and preferably at most 0.45%, and more preferably at most 0.40%.
9. A rolled sheet product according to any one of claims 1 to 8, wherein the Si- content is at least 0.90%, and preferably at most 1 .50%, and more preferably at most 1 .45%.
10. A rolled sheet product according to any one of claims 1 to 9, wherein the sheet product is devoid of any metallic clad layers.
1 1 . A rolled sheet product according to any one of claims 1 to 10, wherein the sheet product is provided with an organic coating.
12. A rolled sheet product according to any one of claims 1 to 10, wherein the sheet product is provided with a surface structure via sheet metal embossing.
13. A rolled sheet product according to any one of claims 1 to 12 in the form of trapezoidal sheet.
14. Use of an aluminium alloy according to any one of claims 1 to 13 for outdoor use in the building industry, signposting or decoration.
15. Use of an aluminium alloy according to any one of claims 1 to 13 in the form a trapezoidal sheet for outdoor use in the building industry.
PCT/EP2015/063203 2014-07-04 2015-06-12 Aluminium alloy for use in the building industry WO2016000937A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14175706.2 2014-07-04
EP14175706 2014-07-04

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP15728541.2A EP3164524B1 (en) 2014-07-04 2015-06-12 Aluminium alloy for use in the building industry
US15/320,477 US20170175230A1 (en) 2014-07-04 2015-06-12 Aluminium alloy for use in the building industry
CN201580036619.0A CN106661679A (en) 2014-07-04 2015-06-12 Aluminium alloy for use in the building industry

Publications (1)

Publication Number Publication Date
WO2016000937A1 true WO2016000937A1 (en) 2016-01-07

Family

ID=51059345

Family Applications (1)

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

Country Status (4)

Country Link
US (1) US20170175230A1 (en)
EP (1) EP3164524B1 (en)
CN (1) CN106661679A (en)
WO (1) WO2016000937A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300927A1 (en) * 1987-06-23 1989-01-25 Pechiney Rhenalu Aluminium based alloy for cans and process of manufacturing
WO1997046726A1 (en) * 1996-06-06 1997-12-11 Reynolds Metals Company Corrosion resistant aluminum alloy
DE19938995A1 (en) * 1998-02-20 2001-03-08 Kobe Steel Ltd Aluminum alloy board for building materials, electrical machinery components etc
EP1484421A1 (en) * 2003-06-05 2004-12-08 Pechiney Rhenalu Use of a rolled or extruded aluminium alloy product having a good corrosion resistance
JP2007131881A (en) * 2005-11-08 2007-05-31 Furukawa Sky Kk Method of producing aluminum alloy sheet for forming and aluminum alloy sheet for forming

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003006697A1 (en) * 2001-07-09 2003-01-23 Corus Aluminium Walzprodukte Gmbh Weldable high strength al-mg-si alloy
BR0312098A (en) * 2002-06-24 2005-03-29 Corus Aluminium Walzprod Gmbh Method for the production of high strength balanced al-mg-si alloy and weldable alloy product
JP4174524B2 (en) * 2006-05-18 2008-11-05 株式会社神戸製鋼所 Aluminum alloy plate manufacturing method and aluminum alloy plate
JP5059423B2 (en) * 2007-01-18 2012-10-24 株式会社神戸製鋼所 Aluminum alloy plate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300927A1 (en) * 1987-06-23 1989-01-25 Pechiney Rhenalu Aluminium based alloy for cans and process of manufacturing
WO1997046726A1 (en) * 1996-06-06 1997-12-11 Reynolds Metals Company Corrosion resistant aluminum alloy
DE19938995A1 (en) * 1998-02-20 2001-03-08 Kobe Steel Ltd Aluminum alloy board for building materials, electrical machinery components etc
EP1484421A1 (en) * 2003-06-05 2004-12-08 Pechiney Rhenalu Use of a rolled or extruded aluminium alloy product having a good corrosion resistance
EP1484420A1 (en) * 2003-06-05 2004-12-08 Pechiney Rhenalu Use of a rolled or extruded aluminium alloy product having a high corrosion resistance
JP2007131881A (en) * 2005-11-08 2007-05-31 Furukawa Sky Kk Method of producing aluminum alloy sheet for forming and aluminum alloy sheet for forming

Also Published As

Publication number Publication date
US20170175230A1 (en) 2017-06-22
EP3164524A1 (en) 2017-05-10
EP3164524B1 (en) 2019-10-30
CN106661679A (en) 2017-05-10

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