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  • Investigations into the influence of calcium, oxygen and sulphur and the associated inclusion morphology on the weldability of stainless steels


In the TIG welding of stainless steel pipe, slag droplets sporadically precipitate on the weld surface, favouring corrosive attack. These areas on the weld seam must be reworked. Since a connection was observed between the occurrence of these flaws and the melt of the base material, the influence of melt treatment, the chemical composition and heat input during welding were examined. Within the framework of the research project, 80 t CrNi- and Cr-steel melts were subjected to different metallurgical treatments. The objective was to modify the materials in terms of their Ca, O(tot) and S contents. These various treatments led to different morphologies of the non-metallic inclusions, changes in which as a result of melting were also examined.

Additional information

Authors: SCHELLER P R, Krupp Stahl AG, Bochum (DE)
Bibliographic Reference: EUR 15166 DE (1995) 65 pp., FS, ECU 8.50
Availability: (2)
ISBN: ISBN 92-826-9512-3
Record Number: 199510276 / Last updated on: 1995-03-08
Original language: de
Available languages: de