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The main aim of the project was to study the influence of trace element content (Cu, Sn, P and As) on the hot ductility of 18/8 grade austenitic stainless steel. Thirty ingots (40 kg in weight) were cast in a medium frequency induction furnace, in a controlled atmosphere (high vacuum and argon pressure). High purity raw materials were used, and process variables were controlled in order to ensure that there was no other important effect on hot ductility, besides the effect of trace element concentration, for every testing condition. A study of the results suggests nearly additive combined effects for P and As contents and an approximate multiplicative effect for the pair Cu and Sn. The overall effects on hot ductility can be considered as a sum of the effects of the two groups: P, As and Cu, Sn. The relative influence of every trace element can also be established. For the conditions of the study, it is possible to predict, using mathematical correlations, the loss of hot ductility on a 18/8 grade steel as a function of trace element concentration.

Additional information

Authors: BOTELLA ARBOLEDAS J, Acerinox SA, Los Barrios, Cádiz (ES)
Bibliographic Reference: EUR 13316 ES (1991) 81 pp., FS, ECU 8.75
Availability: (2)
ISBN: ISBN 92-826-2524-9
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