Nickel Aluminum Bronze Corrosion Resistance

What is corrosion?

Corrosion is the deterioration of metal as the result of chemical reactions and its surrounding environment. Corrosion can have a variety of negative effects on metal.  Ultimately corrosion of a metal component can lead to the failure of the component to function.  There are a number of different types of corrosion in metals.  They include:

  • Galvanic corrosion
  • Stress-corrosion cracking
  • Erosion corrosion
  • Cavitation corrosion
  • Selective corrosion

Nickel Aluminum Bronze Alloys are known their superior corrosion resistance in seawater and many other chemical environments.  The corrosion resistant property relies on the formation of a copper/aluminum oxide film.  This film is self-repairing in media containing even low levels of oxygen.

This oxide film provides the following benefits:

  • It adheres firmly to the surface of the substrate
  • It has a resistance to liquid penetration
  • The hardness of the alumina content creates higher resistance to erosion and abrasion
Nickel Aluminum Bronze Corrosion Resistance

Nickel Aluminum Bronze alloys can be considered for service in the following chemicals.  Selection must take into account the operational temperature, concentrations, service conditions, and impurities.

Acetic Acid Carbon Dioxide Glycerine Sewage
Acetic Anhydride Carbonic Acid Glycerol Soaps
Acetate Solvents Caustic Potash Hydrochloric Acid Sodium Bisulfate
Alcohols Caustic Soda Hydrofluoric Acid Sodium Bisulfite
Aldehydes Chlorine (dry) Hydrogen Sodium Chloride
Aluminum Chloride Chloroform Inert Gases Sodium Hypochlorite
Aluminum Fluoride Citric Acid Lactic Acid Sodium Nitrate
Aluminum Hydroxide Coal Tar Linseed Oil Sodium Silicate
Aluminum Sulfate Coal Tar Solvents Magnesium Chloride Sodium Sulfate
Ammonia (Dry) Copper Sulfate Mineral Oils Sodium Bisulfite
Amyl Chloride Dyestuffs, Acid Dyes Naphthenic Acids Sulphur
Asphalt Esters Nickel Sulfate Sulfuric Acid
Barium Chloride Ethers Nitrogen Sulfurous Acid
Benzole Fats Oxalic Acid Sulfur Dioxide
Borax Fatty Acids Oxygen Tannic Acid
Boric Acid Fluosilicic Acid Oleic Palmytic Stearic Acid Tartaric Acid
Brine Formaldehyde Paints Trichlorethylene
Bromine (Dry) Formic Acid Petroleum Products Tri-Sodium Phosphate
Calcium Chloride Furfural Phosphoric Acid Zinc Chloride
Calcium Hypochlorite Fuel Gases Pickling Solutions Zinc Sulfate
Cane Sugar Liquors Gelatine Refrigeration Gases  
Carbolic Acid Glucose Seawater  

Applications that utilized Nickel Aluminum Bronze Corrosion Resistance

Nickel Aluminum Bronze Landing Gear Bushings

Paper Making

Nickel Aluminum Bronze is used in the paper making industry, where it comes into contact with low concentrations of hypochlorites and bisulfites found in the pulp.  It has excellent corrosion resistance under these conditions and is used for beater bars, valves and suction rolls. 

Glass Industry

Nickel Aluminum Bronze is used in the glass industry in the frosting of glass, utilizing its corrosion resistance in hydrofluoric acid.  In this industry hydrofluoric acid is sprayed through nickel aluminum bronze nozzles onto light bulbs.


Nickel Aluminum Bronze alloys C63000 AMS 4640, C95510 AMS 4880, C63020 AMS 4590, and C95520 AMS 4881 are used in landing gear bushings.  The excellent bearing properties combined with the corrosion resistance in salt conditions during deicing of run ways in the winter make these alloys ideal for this application

Nickel Aluminum Bronze Alloys

Here at National Bronze Mfg. Co., we offer the following Nickel Aluminum Bronze Alloys in both bar stock form and full machined components:

C63000 AMS 4640 Nickel Aluminum Bronze

C95510 AMS 4880 Nickel Aluminum Bronze

C63020 AMS 4590 Nickel Aluminum Bronze

C95520 AMS 4881 Nickel Aluminum Bronzes

C95500 9D Nickel Aluminum Bronze

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