TY - CONF A1 - Gümpel, P. A1 - Leu, F. A1 - Burkert, Andreas A1 - Lehmann, Jens T1 - Corrosion resistance of lean alloy alternatives for 300 series stainless steels T2 - 7th European stainless steel conference - science and market (Proceedings) N2 - Rising Prices of nickel and molybdenum in the past few years have led to unprecedented interest in Substitution of leaner-content alloys for Standard 300-series austenitic stainless steels in a lot of applications. Due to the high prices of different alloying elements and to periodic large fluctuations that cause similar large fluctuations in the costs of using 300-series stainless steels; a lot of new materials entered the markets in Europe and also in the rest of the world. A big disadvantage consists in the fact that there are though corrosion results that, however, a direct comparison of the corrosion resistance of these new materials does not exist up to now or only incompletely. In this project comparative investigations were carried out and always one or several representatives of a material group were incorporated. These material groups are: Lean Duplex Stainless Steels, Manganese Alloyed Austenitic and Duplex Stainless Steels and Ferritic Stainless Steels. These materials were investigated in a lot of different test procedures and in different conditions focused on the application in civil engineering and common use. Beside the electrochemical investigations all materials were exposed in different surface States in the atmosphere, once in Coastal nearness and once in a city centre area. Other exposition tests with material Coupons where done in the atmosphere of indoor swimming pools and at the case of food processing machines were corrosion processes are caused by the cleaning procedure. First results are reported. T2 - 7th European stainless steel conference - science and market CY - Como, Italy DA - 21.09.2011 KW - Austenitic stainless steels KW - Ferritic stainless steels KW - Duplex stainless steels KW - Manganese alloyed stainless steels KW - Pitting corrosion KW - Stress corrosion cracking KW - Passive layer KW - Surface condition PY - 2011 SN - 978-88-85298-84-2 IS - Applications / No. 53 SP - 1 EP - 15 AN - OPUS4-24803 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gümpel, P. A1 - Leu, F. A1 - Burkert, Andreas A1 - Lehmann, Jens T1 - New lean alloy alternatives for 300 series stainless steels - a corrosion perspective JF - Asian international journal of science and technology in production and manufacturing engineering (AIJSTPME) KW - Austenitic stainless steels KW - Ferritic stainless steels KW - Duplex stainless steels KW - Manganese alloyed stainless steels KW - Pitting corrosion KW - Stress corrosion cracking KW - Passive layer KW - Surface condition PY - 2012 SN - 1906-151X VL - 5 IS - 4 SP - 29 EP - 42 PB - King Mongkut's University of Technology CY - North Bangkok AN - OPUS4-29066 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gümpel, P. A1 - Leu, F. A1 - Burkert, Andreas A1 - Lehmann, Jens A1 - Burkert, Annette T1 - Korrosionsbeständigkeit von Alternativwerkstoffen zu den klassischen nichtrostenden, austenitischen Stählen JF - Horizonte N2 - In einer umfangreichen Untersuchung konnte gezeigt werden, dass es aus korrosionstechnischer Sicht sehr gute, schwächer legierte Alternativwerkstoffe zu den heute überwiegend eingesetzten nichtrostenden CrNi- und CrNiMo-Stählen gibt und dass sich hierdurch ein wirtschaftlicher Vorteil generieren lässt. KW - Korrosion KW - Duplexstahl KW - Ferritischer Stahl PY - 2012 SN - 1432-9174 VL - 39 IS - März SP - 12 EP - 19 PB - Koordinierungsstelle CY - Mannheim AN - OPUS4-26744 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gümpel, P. A1 - Leu, F. A1 - Burkert, Andreas A1 - Lehmann, Jens A1 - Karpenko, M. T1 - Corrosion resistance of lean alloy alternatives for 300 series stainless steels - Part 2 JF - Stainless steel world N2 - The second part of this paper looks continues the comparative investigation of lean duplex stainless steels, manganese alloyed austenitic and duplex stainless steels and ferritic stainless steels. These new materials were investigated in many different test procedures and in different conditions focused on the application in civil engineering and common use. In addition to electrochemical investigations, all materials were exposed to atmospheric conditions in different surface states. In Part 2, Prof. Gümpel and his team examine the effects of coastal and urban atmospheres on the samples, and presents their final conclusions. KW - Nichtrostender Stahl KW - Duplex KW - Korrosion KW - Beständigkeit KW - Austenitic KW - Ferritic KW - Duplex KW - Manganese alloyed KW - Pitting corrosion KW - Stress corrosion cracking KW - Passive layer KW - Surface condition PY - 2014 SN - 1383-7184 IS - July/August SP - 49 EP - 52 PB - KCI Publ. BV CY - Zutphen AN - OPUS4-31348 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gümpel, P. A1 - Leu, F. A1 - Burkert, Andreas A1 - Lehmann, Jens A1 - Karpenko, M. T1 - Corrosion resistance of lean alloy alternatives for 300 series stainless steels - Part 1 JF - Stainless steel world N2 - Rising prices of nickel and molybdenum in the recent past years have led to unprecedented interest in substituting leaner-content alloys for standard 300-series austenitic stainless steels in many applications. Due to the price volatility of various alloying elements, many new materials have entered the market, yet no direct comparison of corrosion resistance of these new materials exists. In this project, comparative investigations were carried out and in each case one or several representatives of a material group were taken into account. The material groups covered were: lean duplex stainless steels, manganese alloyed austenitic and duplex stainless steels and ferritic stainless steels. In addition to electrochemical investigations, all materials were exposed to various atmospheric conditions in different surface states. KW - Nichtrostender Stahl KW - Duplex KW - Korrosion KW - Beständigkeit PY - 2014 SN - 1383-7184 IS - June SP - 42 EP - 46 PB - KCI Publ. BV CY - Zutphen AN - OPUS4-30902 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -