Boehler Edelstahl Gmbh & Co Kg

Schoeller-bleckmann Oilfield Technology Gmbh

Other

Bohler Edelstahl Gmbh

Josef Bernauer

Herbert Aigner

Gabriele Saller

Raimund Huber

Markus Speidel

G&uuml;nter Hoch&ouml;rtler

An austenitic, substantially ferrite-free steel alloy and a process for producing components therefrom. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Corrosion-resistant austenitic steel alloy

Process for producing a corrosion-resistant austenitic alloy component

Component for use in oil field technology made of a material which comprises a corrosion-resistant austenitic steel alloy

Nickel-based alloy for high-temperature technology

A material which is suitable for equipment in oilfield technology and a process for making the material. The material consist essentially of C, Si, Mn, Cr, Mo, Ni, Cu, N in certain weight percentages, with the balance iron and contaminants due to manufacture. The material is hot formed in a condition free of nitride precipitates and without precipitated associated phases. After a cooling, it is cold formed in a condition free of ferrites. The material has certain values of relative magnetic permeability, yield strength (R ), notched impact strength, fatigue strength under reversed stresses, and fracture appearance transition temperature.

Corrosion resistant material

An austenitic, paramagnetic and corrosion-resistant material, particularly in media with high chloride concentrations, the material having high strength, yield strength, and ductility, including carbon, silicon, chromium, manganese, nitrogen, and optionally, nickel, molybdenum, copper, boron, and carbide-forming elements. The material is preferably substantially completely austenitic. A process utilizing alloying technology that includes a deformation and synergistically results in production of a ferrite-free material that is reliably paramagnetic, is corrosion-resistant, and has high yield strength, strength, and ductility. The material can be very beneficially used, for example, in connection with oil field technology, such as for bore rods and drilling string components as well as for precision-forged components, and for high strength attachment and connection elements.

Process for producing a paramagnetic, corrosion-resistant material and like materials with high yield strength, strength, and ductility

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St. Florian, Austria

Josef Bernauer