High-strength Low-alloy Heat-treatable Steels with Good Enamel ...

manufacture of tanks and silos for farming or biogas plants, or production of heatexchangers and water heaters. Here, the strength increase enables a sheet thicknessreduction of up to 40%, combined with an enormous weight reduction effect.AcknowledgementsThe author is indebted to the staff members of Monash University for giving laboratoryfacilities to carry out the described research work. Thanks are especially due JohannesTlatlik of RWTH Aachen for organizing and performing the tests and analyzing theexperimental results, and Professor Yuri Estrin and Professor Christopher Hutchinson ofMonash University for their helpful advice throughout the course of the tests.Bibliography[1] J. Schöttler: Einsatz von Vergütungsstählen und Nutzung ihrer Verfestigungspotenziale fürEmailanwendungen, Mitt. DEV 57 (2009) 6, P. 98-103Figures and Tables:Fig. 1:Fig. 2:Fig. 3:Fig. 4:Fig. 5:Fig. 6:Fig. 7:Fig. 8:Tensile test results for EH800 after enameling with different heating conditionsDifferent phenomenological behaviors at the steel-enamel interfaceDisplay of boiler enamel linescan with tagged characteristic componentsChemical composition of globular crystals (brown) and boiler enamel (red)Sketch of self designed adhesion pull testCompilation of the different results for each parameter constellation with EH800 steel andboiler enamelOverview of mean maximum stress for adhesion tests for all steel and enamel types andparameter configurationsCorrelation between thoroughness of enamel detachment (rating) and adhesion strength(lighter color means better rating, darker means worse)Tab. 1:Measured values of maximum stress for tearing off the enamel and rating for thoroughness ofenamel detachment from steel (1 = very good, 5 = very bad)14 von 14