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Incoloy® Alloy 945

Common Trade Names: 
Incoloy 945; Alloy 945; 

Incoloy® alloy 945 (UNS N09945) is a high-strength, corrosion-resistant alloy designed for demanding applications in the oil and gas industry. The properties of this age hardenable nickel-iron-chromium alloy are enhanced by its contents of molybdenum, copper, niobium, titanium, and aluminum. 

The alloy’s nickel content results in resistance to chlorideinduced stress corrosion cracking. Nickel, in conjunction with the molybdenum and copper, also gives alloy 945 outstanding resistance to general corrosion in reducing media. Molybdenum also imparts resistance to localized attack (pitting and crevice corrosion). The alloy’s content of chromium provides resistance in oxidizing environments. Niobium, titanium and aluminum participate in the age hardening reaction that occurs during heat treatment. Their interaction forms gamma prime and gamma double prime precipitates, which strengthen the alloy.

Available Product Forms: 

Round bar, forging stock, tube and wire

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Specifications

Incoloy® alloy 945 is designated as UNS N09945. 

The alloy is approved for use in oil and gas applications by NACE MR0175 / ISO 15156-3 up to NACE level VII and to level VI-450ºF. 

Trademark Notice: Some names are trade names and/or trademarks of specific manufacturers. American Special Metals, Corp. is not affiliated with any manufacturer(s). Orders will be filled to meet specifications from any available source(s). Names are listed solely for reference to help identify products consistent with listed specifications.

Incoloy® Alloy 945 Is a Registered Trademark of Special Metals Corporation and Its subsidiaries.

American Special Metals, Corp. makes all reasonable efforts to ensure the accuracy and correctness of the data in this document but makes no representations or warranties as to the data’s accuracy, correctness or reliability. All data are for general information only and not for providing design advice. It is the responsibility of the user to test specific alloys under actual service conditions to determine their suitability for a particular purpose.

Chemical Composition

Limiting Chemical Composition, %  by Weight  

Nickel ......…………………………………..…..45.0-55.0
Chromium ..…………………………………….19.5-23.0
Iron ……………….………………………………Balance
Molybdenum …….………………………………..3.0-4.0
Niobium .…………………………………………..2.5-4.5
Copper …………………………………………….1.5-3.0
Titanium ….………………………………………..0.5-2.5
Aluminum ….…………………………………….0.01-0.7
Manganese ...……………………………………1.0 max.
Silicon …..………………………………………..0.5 max.
Sulfur …..……………………………………….0.03 max.
Phosphorous .………………………………….0.03 max.
Carbon …..…………………………………0.005 to 0.04


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