Sulfidation/oxidation resistant alloys

Patent · Tue Nov 21 04:00:00 EST 1989

OSTI ID:7173326

Smith, G D; Tassen, C S

The patent describes a nickel-base, high chromium alloy. It is characterized by excellent resistance to sulfidation and oxidation at elevated temperatures as high as 2000 {degrees} F. (1093 {degrees} C.) and higher, a stress-rupture life of about 200 hours or more at a temperature at least as high as 1800 {degrees} F. (990:0083 {degrees} C.) and under a stress of 2000 psi, good tensile strength and good ductility both at room and elevated temperature. The alloy consists essentially of about 27 to 35% chromium, about 2.5 to 5% aluminum, about 2.5 to about 6% iron, 0.5 to 2.5% columbium, up to 0.1% carbon, up to 1% each of titanium and zirconium, up to 0.05% cerium, up to 0.05% yttrium, up to 1% silicon, up to 1% manganese, and the balance nickel.

• Assignee: INCO Alloys International, Inc., Hunington, VA
• Patent Number(s): A--; US 4882125
• OSTI ID: 7173326
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
CARBON ADDITIONS
CARBON COMPOUNDS
CERIUM ADDITIONS
CERIUM ALLOYS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
HIGH TEMPERATURE
IRON ALLOYS
MANGANESE COMPOUNDS
NICKEL ALLOYS
NICKEL BASE ALLOYS
OXIDATION
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
SILICON COMPOUNDS
SULFIDATION
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM ADDITIONS
YTTRIUM ALLOYS
ZIRCONIUM COMPOUNDS