INCOLOY alloy 825 - Specialized Threaded Fasteners


INCOLOY alloy 825

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INCOLOY® is a trademark of Special Metals Corporation.

INCOLOY® alloy 825 is a nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium.

The alloy’schemical composition,is designed to provide exceptional resistance to many corrosive environments.

The nickel content is sufficient for resistance to chloride-ion stress-corrosion cracking.

The nickel, in conjunction with the molybdenum and copper, also gives outstanding resistance to reducing environments such as those containing sulfuric and phosphoric acids.

The molybdenum also aids resistance to pitting and crevice corrosion.

The alloy’s chromium content confers resistance to a variety of oxidizing substances such as nitric acid, nitrates and oxidizing salt.

The titanium addition serves, with an appropriate heat treatment, to stabilize the alloy against sensitization to intergranular corrosion.


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