Community Research and Development Information Service - CORDIS


Final report on Contract numbers: 7210-MA/132, 7210-MA/322, 7210-MA/905, 7210-MA/954; 1 July 1996 to 31 December 1999

This project aimed at the improvement of stainless steels for applications at 400°C to 800°C in corrosive environments. The recipes tested for the improvement of the corrosion resistance were a fine grain microstructure, surface working, enhanced manganese concentration, and additions of titanium, niobium, silicon and/or aluminium. In all, 14 laboratory melts were prepared and applied to steel specimens in different states. All tests confirm the positive effects of fine-grain microstructure and surface working; both means supply fast-diffusion paths for chromium diffusion and favour formation of a chromium-rich protective scale. Enhanced manganese concentration is advantageous against metal dusting, but less so against waste-incineration conditions. Manganese is deleterious in flue gas. Additions of silicon or aluminium improved the corrosion resistance. All steels are resistant to oxidation in dry air between 400°C and 700°C. The commercial steels showed better oxidation and corrosion resistance than the laboratory melts. The main recommendations are to specify a fine-grain microstructure and to apply some surface working on stainless steel components to be used at elevated temperatures in corrosive conditions.

Additional information

Authors: GRABKE H J, MPI, Düsseldorf (DE);SÄMANN N, MPI, Düsseldorf (DE);MÜLLER-LORENZ E M, MPI, Düsseldorf (DE);BOTELLA ARBOLEDAS J, Acerinox, Los Barrios (ES);HEREDIA LOZANO M A, Acerinox, Los Barrios (ES);BOULANGÉ L, Ugine-Savoie, Ugine (FR);GASCA P, Ugine-Savoie, Ugine (FR);ANTONI L, Ugine-Savoie, Ugine (FR);HERTZMAN S, SIMR, Stockholm (SE);PETTERSSON R, SIMR, Stockholm (SE);SZAKALOS P, SIMR, Stockholm (SE);SAMANN N, MPI, Dusseldorf (DE);MULLER-LORENZ E M, MPI, Dusseldorf (DE)
Bibliographic Reference: EUR 20103 EN (2002), pp.137. Euro: 32.50
Availability: EUR-OP reference: KI-NA-20103-EN-S. Available from EUR-OP sales agents. URL:
ISBN: ISBN: 92-894-3109-1
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