Huntington Alloys Corporation

The International Nickel Company, Inc.

Inco Alloys International, Inc.

Herbert L Eiselstein

Darrell F Smith, Jr

Edward F Clatworthy

Jerry A Harris

Jeffrey M Davidson

James C Hosier

Ralph C Scarberry

Stephen Floreen

Allen C Lingenfelter

Nickel-base alloys containing special and correlated percentages of chromium, iron, molybdenum, titanium, columbium, aluminum etc. (i) provide an attractive combination of strength, ductility, resistance to environmental media and other desirable characteristics, (ii) can be processed by cold working and age hardening to achieve yield strengths of 150,000 psi (1034 MPa) to 200,000 psi (1379 MPa) together with tensile elongations of 10% to 20%, (iii) are resistant to such corrosive media as hydrogen sulphide and acid chloride solutions, and to hydrogen embittlement, and (iv) are useful for, inter alia, petroleum production tubing and sulfur dioxide gas scrubber applications.

Corrosion resistant high-strength nickel-base alloy

An apparatus (10) and method for fabricating tubes (26) from powders (32). A retractable, rotating mandrel (18) is disposed within a powder hopper (12) and circumscribed by a plurality of swaging dies (20). A flexible iris (14), disposed between the hopper (12) and the dies (20), reduces powder (32) loss. As the mandrel (18) is withdrawn from the hopper (12), the dies (20) alternatingly expand and contract compacting the powder (32) in a compaction zone (48) about the mandrel (18) to form a tube (26). The resultant continuous tube (26) is withdrawn along with the mandrel (18).

Apparatus and method for fabricating tubes from powder

A nickel-base alloy intended for diverse application, including components for high temperature, gas cooled reactors (HTGR), the alloy containing, in addition to nickel, chromium, tungsten, titanium and carbon, the presence of aluminum and cobalt being controlled for HTGR use.

High temperature nickel-base alloys

Matrix-stiffened nickel-iron-chromium-columbium solid-solution alloy with excellent metallurgical stability has heat-resistant and corrosion resistant characteristics especially useful for articles needed to sustain stress in long-time service at elevated temperatures, particularly including superheater tubing in steam power plants. Alloy also has good workability and thermal response characteristics for commercial production of heat-treated wrought products.

Matrix-stiffened heat and corrosion resistant wrought products

Matrix-stiffened heat and corrosion resistant alloy

Nickel-iron-chromium-molybdenum-columbium alloy of specially controlled composition has heat and corrosion resistance characteristics particularly useful for, inter alia, use in aqueous solutions containing chlorides.

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Huntington, WV, United States of America

Herbert L Eiselstein