Zinc-Magnesium Coated Steel Sheets - stahl-online.de

1 Zinc-MagnesiumCoated Steel Sheets Less is More2 ContentsNew Protection for Steel SheetsThinner, more resistant, environmentally friendlier .. Page 3 Metallic CoatingsA success story .. Page 4 Properties for the FutureMore corrosion -resistant and more conserving Page 6 Super-Thin CoatingBig Page 9 High-Precision ProductionFinishing continuously .. Page 10 Processing OptionsMulti-purpose and Highly Efficient .. Page 12 Application examplesConvincing in Practice .. Page 14 Exemplary Environmental ProtectionDurable and 100-per-cent Page 18 Zinc-Magnesium Coated Steel SheetLess is Page 19 PUBLICATION INFORMATIONP ublisher: Stahl-Informations-Zentrum, Postfach 104842, 40039 D sseldorf, Germany Tel.

2 : +49 (0)2116707-967, Fax: +49 (0)211 6707-344, E-mail: Internet: office and staff: Stahl-Informations-Zentrum together with the Arbeitskreis organisch beschichtetesBlech und Band im Fachausschuss f r Feinblech (Working group for organic Coated sheet and strip of thetechnical committee for sheet Steel ), of the Materials Committee, Steel Institute VDEhThis document represents the translation of the German Dokumentation 566: Zink-Magnesium-veredelteFeinbleche Weniger ist mehr , edition 2012.

3 Reproduction of, or excerpts from this publication are onlypermitted with written consent of the Publisher and citation of the source. The information contained hasbeen carefully researched and edited. However, the Publisher assumes no liability for its credits / sources: (illustrations with kind permission of) cover page, large photo: IMS Ingenieurgesell-schaft mbH, Hamburg, photographer: Rakesh Rao; cover page, column right, second photo from top aswell as page 14: Welser Profile Deutschland GmbH, B nen; page 15 above: IMS Ingenieurgesellschaft mbH,Hamburg, photographer: Joseph Silveira; page 17 below: Kaltenbrunner GmbH, Munich.

4 Page 18 left: other photographs have been made available by members of the editorial 20133 Steel Sheets made of the strongestgrades contribute to light-weight construc-tion while at the same time making designengineering safer as evidenced in auto-mobile manufacturing, for example. Theadvantages: on the one hand, less rawmaterial is required for production, whileon the other, fuel consumption and CO2emissions drop considerably.

5 Significantadvances, however, are not only takingplace in terms of Steel grades the steelindustry is also developing innovative so-lutions for corrosion protection as the development of Zinc-Magnesium (ZM) coatings for commercial use, newlevels of performance have been achievedin technical properties, as well as in climate protection, sustainability, and efficient resource Coated Steel Sheets offernotably improved corrosion resistancecompared to conventional zinc-coatedsteel for many applications.

6 In addition, increased protection at cut edges and atscratches is provided by its self-healing property. Thanks to these beneficial prop-erties, products manufactured using stripsteel Coated with Zinc-Magnesium offerenhanced corrosion protection. Moreover,its excellent characteristics of subsurfacemigration of paint is strip exiting the hot-dip bathSteel Sheets with a Zinc-Magnesium coat-ing contribute to improving the ecologicalbottom line of Steel products.

7 This is attrib-utableto lower consumption of valuableresources and energy, simplified process-ing, and extended product life, while thematerial can be recycled with no loss inquality at the end of each life Protection for Steel SheetsThinner, more resistant, environmentally friendlier4 Metallic CoatingsA success storyAlthough Zinc-Magnesium coatings werefirst introduced in 2007, the market isgrowing rapidly with sales doubling almost annually.

8 In fact, zinc-magnesiumcoated Steel Sheets represent the fastest-growing groups of Steel products. This isthe preliminary peak of a success storythat began with zinc coatings about 60years ago. Economic NecessityCorrosion colloquially rust is an eco-nomic problem of huge dimensions. Reli-able estimates put damage due to rust atabout 100 billion Euros annually in Ger-many alone. The industrialised countriesare forced to spend up to four per centof their gross domestic product combat-ing corrosion damage.

9 Whether massivesteel-beamed projects like bridges, orthin-walled components like fa ades outof Steel Sheets without corrosion pro-tection, they would require expensivemaintenance and have short life numbers mentioned make it clearthat investments in preventative corro-sion protection are meaningful and eco-nomically GalvanizingVarious grades of Steel are used in mak-ing Steel Sheets , depending on the applica-tion involved.

10 Different protection systemshave been developed to protect the steelfrom corrosion . In order to protect indus-trial-scale big quantities of Steel sheetsfrom corrosion , one of the most impor-tant processes is continuous hot-dipping,also referred to as continuous strip galva-nizing. Instead of zinc-plating individualparts, strips are integrally provided withmetallic coatings by Steel ,1001,3001,5001,7001,9002,100 Index of market growth forzinc-magnesium Coated steelsheet (2007 = 100)5 Tailored PropertiesZinc (Z) as a coating consists of about 99 per cent zinc and was first employedfor corrosion protection of sheet Steel in 1959.