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Generally, the positive contribution to the hardening by precipitation on the combination between mechanical resistance and SSCC resistance was confirmed. However, even for such materials as industrial vanadium microalloyed steels having a high yield stress the absolute NACE threshold stress figures are around 150 MPa. The experimentation on an industrial scale demonstrated that it is possible to produce high degree materials with vanadium microalloyed steel, quenched and tempered at a high temperature. Such materials show excellent SSCC resistance. By reducing the P standards from 190 to 40-60 ppm it is not possible to improve significantly the SSCC behaviour of microalloyed steels.

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Authors: ANELLI E, Centro Sviluppo Materiali SpA, Roma (IT);TORELLA R, Centro Sviluppo Materiali SpA, Roma (IT);CUMINO G, Centro Sviluppo Materiali SpA, Roma (IT)
Bibliographic Reference: EUR 16680 IT (1997) 65pp., FS, ECU 11.50
Availability: Available from the (2)
ISBN: ISBN 92-828-0958-7
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