Titanium Metals Corporation

James G Miller

James S Grauman

Roy E Adams

Paul Garratt

Roger Owen Thomas

Titanium alloys with an improved and unexpected combination of corrosion resistance, strength, ductility and toughness are provided. The titanium alloys contain molybdenum, nickel, zirconium, iron, and oxygen as alloying agents. Also the titanium alloys may be subjected to thermal treatments. The titanium alloys can include molybdenum between 3.0 to 4.5 wt. %, nickel between 0.1 to 1.0 wt. %, zirconium between 0.1 to 1.5 wt. %, iron between 0.05 to 0.3 wt. %, oxygen between 0.05 to 0.25 wt. %, and a balance of titanium and unavoidable impurities. The titanium alloys can have a yield strength between 550 to 750 MPa, a tensile strength between 700 to 900 MPa, an elongation to failure between 25 to 35%, a reduction in area between 55 to 70%, and a corrosion rate between 0.5 to 2.5 mils per year when exposed to 1 wt. % boiling hydrochloric acid per the ASTM G-31 test method.

Titanium alloys having improved corrosion resistance, strength, ductility, and toughness

A titanium article having improved corrosion resistance resulting from a direct or indirect attachment of a platinum group metal or alloy thereof or incorporation of this metal or alloy thereof into a minor surface portion of the article.

Fabricated titanium article having improved corrosion resistance

A titanium article having improved corrosion resistance resulting from an appliqu&eacute; of a platinum group metal or alloy thereof attached to a minor surface portion of the article.

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Henderson, NV, United States of America

James G Miller