Abstract: An austenitic, non-magnetic, stainless steel alloy is disclosed which, in the wrought condition, is essentially ferrite-free and has a relative magnetic permeability of less than about 1.02, a room temperature 0.2% yield strength of at least about 100 ksi, and good resistance to stress corrosion cracking in chloride environments. Broad, intermediate, and preferred ranges are disclosed as follows:______________________________________ w/o Broad Intermediate Preferred ______________________________________ C 0.08 max. 0.05 max. 0.035 max. Mn 14-19 15-18 16-18 Si 1.0 max. 1.0 max. 0.75 max. Cr 12-21 14-19.5 16-18 Ni 3.5 2.5 max. 1.5 max. Mo 0.5-4 0.75-2.5 1.0-2.0 Cu 2.0 max. 1.5 max. 1.0 max. N 0.2-0.8 0.3-0.7 0.4-0.6 B 0.06 max. 0.005 max. 0.005 max. ______________________________________the balance being iron.

Abstract: A duplex stainless steel having a good combination of galling resistance and corrosion resistance is disclosed containing in weight percent about:______________________________________ Broad Intermediate Preferred ______________________________________ C 0.1 Max. 0.05 Max. 0.025 Max. Mn 0-6 1-4 1-3 Si 2.5-6 3-6 4-5 Cr 16-24 17-22 18-21 Ni 2-12 6-10 7-9 Mo 4 Max. 0.5-3 1.0-2 N 0.07-0.30 0.10-0.25 0.15-0.20 ______________________________________and the balance of the alloy is essentially iron. In the annealed condition the alloy is limited to about 15-50% v/o ferrite. To attain its good galling resistance, the alloying elements are balanced so that the % Ni+0.68 (% Cr)+0.55 (% Mn)+0.45 (% Si)+(% C+% N)+% Mo+0.2 (% Co), is at least about 27.5, and the Ni/Si ratio is not more than about 2.5.

Abstract: An austenitic, non-magnetic, stainless steel alloy and articles made therefrom are disclosed which, in the wrought condition, are essentially ferrite-free and have a relative magnetic permeability of less than about 1.02, a room temperature 0.2% yield strength of at least about 100 ksi, and good resistance to stress corrosion cracking in chloride environments. Broad, intermediate, and preferred ranges are disclosed as follows:______________________________________ w/o Broad Intermediate Preferred ______________________________________ C 0.08 max. 0.05 max. 0.035 max. Mn 14-19 15-18 16-18 Si 1 max. 1 max. 0.75 max. Cr 12-21 14-19.5 16-18 Ni 3.5 2.5 max. 1.5 max. Mo 0.5-4 0.75-2.5 1.0-2.0 Cu 2.0 max. 1.5 max. 1.0 max. N 0.2-0.8 0.3-0.7 0.4-0.6 B 0.06 max. 0.005 max. 0.005 max. ______________________________________the balance being iron. The alloy is balanced to be essentially ferrite-free and is further balanced according to Equations 1 and 2 (Eqs.

Abstract: Precipitation hardenable or hardened nickel-cobalt-iron base alloy containing nickel, cobalt, iron, columbium, titanium, aluminum and boron as the only essential elements, characterized by a mean coefficient of linear expansion of about 3.times.10.sup.-.sup.6 /.degree. F to 6.times.10.sup.-.sup.6 /.degree. F from room temperature to its Curie temperature of at least about 600.degree. F to 1000.degree. F or higher. The alloy contains about 35-45% nickel, 13-18% cobalt, 2.5-7.0% columbium, 1.0-4.0% titanium, 0.1-2% aluminum, and a small but essential amount of boron.