TY - JOUR A1 - Burkert, Andreas A1 - Lehmann, Jens A1 - Burkert, Annette A1 - Mietz, Jürgen T1 - Damage of stainless steel bars due to atmospheric corrosion N2 - In addition to constructional requirements in civil engineering stainless steels often have to fulfil high visual demands. Unexpected impairments of the visual appearance of stainless steels under low corrosive conditions are a widespread problem today. Frequently it is supposed that this is caused by changes in the alloy composition, worse environmental conditions or improper handling. Within a research project the systematic investigation of several cases of damaged stainless steel bars has shown that the reasons are based on well-known material defects like chemical inhomogeneities (e.g. precipitations or local carburization) or geometrical defects (e.g. undercuts, rolling defects or shell formation). Thus, the failures could be clearly identified as production failures of the respective semi-finished products. KW - Atmospheric corrosion KW - EPR test KW - Failure KW - Intercrystalline corrosion KW - Stainless steel KW - Nichtrostender Stahl KW - Werkstoffauswahl KW - Dauerhaftigkeit KW - Korrosion PY - 2012 U6 - https://doi.org/10.1002/maco.201005701 SN - 0947-5117 SN - 1521-4176 VL - 63 IS - 3 SP - 264 EP - 270 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-25702 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Fischer, Joachim A1 - Burkert, Andreas A1 - Mietz, Jürgen T1 - Case studies of stainless steel corrsoion in indoor swimming pool environments N2 - In indoor swimming pools stainless steels are used not only due to structural and economic reasons but also due to aesthetic considerations. And therefore not only safety relevant load bearing components have to fulfil their tasks but also the visual appearance should be free of any staining. In a lot of cases basic requirements (e.g. design criteria, material selection and maintenance) being essential parts of technical regulations were not taken into account. Typical case studies with explanation of the cause of the corrosion problems and possibilities to prevent them are shown in the present paper. KW - Stainless steel KW - Atmospheric corrosion KW - Indoor swimming pools PY - 2011 U6 - https://doi.org/10.1179/174327809X409150 SN - 1478-422X VL - 46 IS - 1 SP - 76 EP - 79 PB - Maney Publishing CY - London, UK AN - OPUS4-23287 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Mietz, Jürgen A1 - Burkert, Andreas T1 - Selection and Durability of Stainless Steels for Civil Engineering N2 - Due to the large number of stainless steels with different chemical composition and different microstructure the selection of the suitable material represents a huge challenge. In order to facilitate the appropriate grade selection, in the current European standard EN 1993-1-4 a procedure is defined based on the use of a look-up table considering the key variables that influence the selection of stainless steels. The table uses descriptions that competent designers should be able to readily understand or define without prior knowledge. The output from the look-up table is used to select alloys based on a Corrosion Resistance Class (CRC) from I to V. The advantage of this approach is that the designer simply specifies the relevant CRC and does not need to consider in detail which of the many (very similar) alloys to specify. KW - Corrosion resistance KW - Stainless steel KW - Civil engineering KW - Atmospheric corrosion PY - 2020 U6 - https://doi.org/10.4028/www.scientific.net/KEM.843 SN - 1662-9795 VL - 843 SP - 125 EP - 131 PB - Trans Tech Publications Ltd, CY - Switzerland AN - OPUS4-50831 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Lehmann, Jens A1 - Burkert, Andreas A1 - Mietz, Jürgen T1 - Investigations proofing the passive layer stability of stainless steels N2 - The presented investigations have proved the principal suitability of the KorroPad method to assess the passive layer stability of stainless steels. The electrochemical mode of action could be described in detail and limitations of the applicability have been demonstrated. The influence of different surface finishes has been investigated and verified by known methods for describing corrosion resistances. As a result, the increased corrosion susceptibility of two ground surfaces has been detected, but also the corrosion resistance of further surface finishes could be confirmed. KW - Stainless steel KW - KorroPad KW - Passive layer PY - 2016 U6 - https://doi.org/10.1002/maco.201408202 VL - 1 IS - 67 SP - 84 EP - 91 PB - WILEY-VCH Verlag GmbH & Co. KGaA CY - Weinheim AN - OPUS4-35545 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -