WELL CASING STEEL

a low alloy, high strength steel well casing exhibiting excellent resistence to hydrogen sulfide stress corrosion and high yield strength of from 90,000 to 145,000 psi comprised of an aluminum-killed steel alloyed with chromium, molybdenum and vanadium. A method of making such a steel including a qu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WAID, GEORGE M, AULT, ROBERT T
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	a low alloy, high strength steel well casing exhibiting excellent resistence to hydrogen sulfide stress corrosion and high yield strength of from 90,000 to 145,000 psi comprised of an aluminum-killed steel alloyed with chromium, molybdenum and vanadium. A method of making such a steel including a quench and temper heat treatment characterized by the steps of austenitizing in the range of from 1550 to 1700.degree.F, quenching to martensite, and tempering in the range of from 1200 to 1400.degree.F to a maximum hardness of 35RC.