Aluminium bronze， CW307G / CUAL10NI5FE4

CuAl10Ni5Fe4, identified by the Werkstoff number 2.0966 and also known as AlBz10Ni, is a nickel-aluminum bronze alloy known for its high strength. This alloy stands out for its superb blend of features, including exceptional strength, outstanding resistance to wear and fatigue, and unparalleled corrosion resistance, especially against seawater and similar conditions. The nickel content in the alloy boosts its strength while maintaining impressive ductility, toughness, and resistance to corrosion, making it a prime selection for challenging uses.

Key Properties and Applications

Composition and Standards: The primary composition of CuAl10Ni5Fe4 includes copper (Cu), with significant amounts of aluminum (Al), nickel (Ni), iron (Fe), and traces of other elements. It meets various international standards such as AMS 4640, DIN 17665, which demonstrates its broad acceptance and applicability across different sectors and geographical areas.

Mechanical and Physical Characteristics: This alloy is celebrated for its corrosion resistance to seawater, high resistance to wear, and absence of stress corrosion. It retains its strength at temperatures up to around 400°C and exhibits exceptional fatigue strength under corrosive conditions. Its resistance across neutral, acidic, and aqueous media, along with excellent resistance to scaling, erosion, and cavitation, is noteworthy.

Applications: CuAl10Ni5Fe4’s robust characteristics make it suitable for heavy-load applications and conditions that involve abrasive wear, friction, and corrosion. Common uses include parts for aircraft landing gear, strut bearings, pistons, gearings, axes, plungers, valves, and marine industry components like pump blocks that are exposed to seawater.

Machinability and Formability: Despite its high resistance to wear and favorable sliding properties, this alloy is also recognized for its machinability. It is amenable to heat treatment and hot forming, although cold forming is generally not advised due to its high strength and hardness.

Comparison with Other Alloys

CuAl10Ni5Fe4 (2.0966) distinguishes itself from other copper-based alloys through its unique combination of high strength, corrosion resistance, and wear resistance. The inclusion of nickel and iron enhances its properties, setting it apart from other aluminum bronzes and making it more suitable for demanding applications. Its efficacy in severe conditions, such as exposure to seawater and in high-load mechanical settings, positions it as a preferred option over conventional bronzes and certain other copper alloys.

In essence, CuAl10Ni5Fe4 (2.0966), or AlBz10Ni, emerges as a high-performance nickel-aluminum bronze alloy, widely employed in scenarios that demand high strength, superior wear and corrosion resistance, and longevity in challenging environments. Its extensive range of properties renders it an adaptable material for aerospace, marine, and various industrial applications.

The CuAl10Ni5Fe4 alloy, also known by the Werkstoff number 2.0966, is a high-strength nickel-aluminum bronze alloy with notable properties such as excellent wear and fatigue resistance, superior corrosion resistance, especially in seawater environments, and good machinability. This alloy is widely used in various applications, including marine, aerospace, and industrial sectors, due to its robust performance in harsh conditions.

Equivalent Materials

The search for equivalent materials to CuAl10Ni5Fe4 reveals several alternatives across different standards and specifications. However, it’s important to note that while these materials may share similar compositions and properties, slight differences could exist due to manufacturing processes, minor composition variations, or specific property requirements for certain applications.

1. European Standard (EN): The CuAl10Ni5Fe4 alloy is directly referenced in European standards, indicating its use and recognition within the European Union. It is classified under the same designation, CuAl10Ni5Fe4, in European norms
   1

   .

2. American Specifications (UNS, AMS, ASTM): The American equivalent to CuAl10Ni5Fe4 is C63000, also known as AMS 4640. This nickel aluminum bronze alloy shares similar chemical composition and properties, such as high strength, corrosion resistance, and wear resistance. It is used in similar applications, including aerospace components like landing gear bushes and hydraulic industry parts like pump blocks
   2
   6

   .

3. British Standards (BS): In British standards, the equivalent material is designated as CA104. This specification aligns closely with the chemical and mechanical properties of CuAl10Ni5Fe4, ensuring similar performance in applications requiring high strength and corrosion resistance
   2

   .

4. Other Specifications: Other international standards and designations also recognize materials with properties and compositions similar to CuAl10Ni5Fe4. These include various national and international standards, but specific equivalent grades are not detailed in the provided search results.

Conclusion

While CuAl10Ni5Fe4 is specifically recognized and utilized under its own designation in European standards, its equivalents in other standards, such as C63000 (AMS 4640) in American specifications and CA104 in British standards, offer similar properties and applications. When seeking an equivalent material, it’s crucial to compare the specific chemical compositions, mechanical properties, and suitability for the intended application to ensure optimal performance.