Niobium addition in crmo 1/4 v steel castings for steam turbine casing appliations

A chromium-molybdenum-vanadium (Cr-Mo-V) cast steel including 0.04 to 0.08% by weight of niobium is disclosed. The cast steel may include 0.08 to 0.12% by weight carbon. The cast steel may also have a sulphur content of 0.015% by weight or less, and a phosphorus content of 0.02% by weight or less. T...

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Bibliographic Details
Main Authors SINGH KULVIR, GURRAM JAIPAL REDDY, NATH PASHUPATI, PUDTHA MALLESH, AGRAWAL VISHNU KUMAR, KATAM SUDHAKAR REDDY
Format Patent
LanguageChinese
English
Published 25.06.2014
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:A chromium-molybdenum-vanadium (Cr-Mo-V) cast steel including 0.04 to 0.08% by weight of niobium is disclosed. The cast steel may include 0.08 to 0.12% by weight carbon. The cast steel may also have a sulphur content of 0.015% by weight or less, and a phosphorus content of 0.02% by weight or less. The silicon content may be 0.30 to 0.60% by weight, the manganese content may be 0.50 to 0.80% by weight, the chromium content may be 1.20 to 1.50% by weight, the molybdenum content may be 0.90 to 1.10% by weight, and the vanadium content may be 0.20 to 0.30% by weight.
Bibliography:Application Number: CN200680000921