08180 Corrosion Resistance of Alloy 31 and 59 in Highly Corrosive Dangerous Goods

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Product Number: 51300-08180-SG

ISBN: 08180 2008 CP

Author: Ralph Baessler, Margit Weltschev, Helena Alves, and Helmut Werner

Publication Date: 2008

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Alloy 31 (X1NiCrMoCu32-28-7) is an iron-nickel-chromium-molybdenum alloy with nitrogen addition which fills the gap between the existing stainless steels and the nickel alloys. Alloy 59 (NiCr23Mo16Al) with a high chromium, molybdenum and nickel content possesses excellent resistance not only to reducing but also to oxidizing chemicals. The superaustenitic steel alloy 31 and the nickel alloy 59 were already used as shell materials for tank vehicles or tank container. The use of these alloys allows the transport of quite more chemicals and especially waste mixtures than the use of the common austenitic steels. Another advantage is the extension of the test intervals of the transport tanks. In Germany the “BAM-List – Requirements for Tanks for the Transport of Dangerous Goods” is the basis for substance-related prototype approvals for tank containers designed for the carriage of dangerous goods undertaken by the Federal Institute for Materials Research and Testing (BAM). Compatibility evaluations of selected metallic material groups (including alloy 31 and 59) as well as of polymeric gasket and lining materials under the influence of approximately 7000 dangerous goods and water-polluting substances are published in the BAM-List.