625 Alloy
UNS N06625
Trade Name: INCONEL® Alloy 625

A nickel-chromium-molybdenum alloy with an addition of niobium that acts with the molybdenum to stiffen the alloy's matrix and thereby provide high strength without a strengthening heat treatment. The alloy resists a wide range of severely corrosive environments and is especially resistant to pitting and crevice corrosion. Used in chemical processing, aerospace and marine engineering, pollution-control equipment, and nuclear reactors. Standard product forms are round, flats, forging stock, extruded section, pipe, tube, plate, sheet, strip, and wire. (Information provided by Special Metals Corporation)

ASME Boiler and Pressure Vessel Specifications
Sheet/ Plate Forgings Weld Fittings Rod and Bar Tubing - Welded/ Smls Pipe - Welded/ Smls Bolting- Bolts/ Nuts Filler Metals
SB443 SB564 SB366 SB446 SB704/ SB444 SB705/   SB444 SB466-625/ SB466-625 ERNiCrMo-3

ASME Boiler and Pressure Vessel Chemical Requirements for Sheet/Plate
Note: all percentages max unless otherwise specified
C Mn Si P S Cr Cb + Nb CoB Mo Fe Al Ti Ni
0.10 0.50 0.50 0.015 0.015 20.0-23.0 3.15-4.15 1.0 8.0-10.0 5.0 0.40 0.40 58.0A

ASME Boiler and Pressure Vessel Mechanical Properties for Sheet/Plate
Tensile Strength, Min ksi Yield Strength, (0.2% offset), Min, ksi Min. Elongation in 2", % Density lb/in³
80 35 30.0 0.306

A - Element shall be determined arithmetically by difference
B - If determined

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