UNS C61900 Aluminium Bronze Chemical Properties, Grade, Chart and Document

UNS C61900 is famous as an aluminum bronze alloy that is characterized by its successful corrosion resistance, high strength and outstanding wear resistance. Its primary components – aluminum, iron, nickel, manganese, and copper – give this alloy an extreme hardness that makes it a good fit for any application that involves keeping things in good shape under harsh conditions. It's a popular material applied to marine tools, chemical processing conditions, and spacecraft designs. Grade C61900 in compliance with ASTM B505 consequently has better machinability and weldability. Both features are essential in aerospace applications. In most cases, the chemical composition chart for C61900 gives details on the proportion of each primary component, thus enabling the exact alloy composition. Besides, practical documentation, together with material safety data sheets and technical specifications, is delivered with this alloy for comfortable and quality machining and use of this alloy in different industries.

UNS C61900 Aluminium Bronze Chemical Composition And Grade Table

UNS C61900, an aluminum bronze alloy, contains a chemical constitution enriched with copper along with aluminum, iron, nickel, and manganese. With the help of this combination, the compound possesses not only a high corrosion resilience but also excellent mechanical properties. Grade C61900 assured quality and consistency as per ASTM B505 standards thus its expected performance don't varies with time. The grade table for C61900 usually contains the composite substance percentages, which help with the accurate selection of a certain alloy for a specific application. This data is fundamental to industries such as marine, chemical processing, and aerospace where the maintain age of material integrity and proper performance are of highest importance.

UNS C61900 Aluminium Bronze Composition Table
Elements Cu Fe Al
Min (%) - - -
Max (%) 86.5 4 9.5

The Advantages and Disadvantages of UNS C61900 Copper Material Properties, C61900 Properties


  • High Strength: UNS C61900 copper alloy comes with great power and resilience, and is therefore apt for applications that require a heavy duty such as marine hardware and industrial equipment.

  • Corrosion Resistance: It features excellent corrosion resistance, in particular in marine conditions, which means its durability and long-term operation is secured.

  • Good Wear Resistance: UNS C61900 has good wear resistance. It is therefore applicable in sliding and abrasive wear situations, for example, bushings and bearings use.

  • Thermal Conductivity: The alloy has a good thermal conductivity, thus, it is a perfect fit in a number of applications such as heat exchangers and condensers.

  • Biostatic Properties: Copper alloys such as UNS C61900 are naturally antimicrobial, and this feature impedes the growth of bacteria and fungi on their surfaces rendering them suitable for medical and food processing equipment.


  • Cost: UNS C61900 copper alloy is relatively more expensive compared to standard brass alloys or other materials and this might somewhat diminish its affordability in certain applications.

  • Limited Availability: UNS C61900 availability could differ substantially by region or supplier. As a result, this could cause longer lead times or higher procurement costs.

  • Potential for Galling: Under some circumstances, UNS C61900 is susceptible to galling, which is an adhesive type of wear associated with slippery contact and thus, appropriate lubrication and surface treatment is required.

  • Surface Tarnishing: Although this alloy is good for corrosion resistance, this alloy will tarnish over time, particularly in an outdoor environment with some pollutants and will lose its appearance.

  • Machinability: Its machinability can be lower than other copper alloys due to the lack of special tools and methods for machining.

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Frequently Asked Questions

What is the chemical components of UNS C61900 aluminum bronze?

A UNS C61900 aluminum bronze normally comprises roughly 88% of copper (Cu), 10% of aluminum (Al), and 2% of iron (Fe) and trace amounts of other elements such as nickel (Ni) and manganese (Mn).

What are the mechanical properties of UNS C61900 aluminum bronze?

UNS C61900 has high tensile strength, considerable corrosion resistance, good wear resistance, and average ductility that makes it perfect for heavy-duty applications.

Are there specified grades of UNS C61900 aluminum bronze?

Yes, C61900 is indeed included in standards like ASTM B150/B150M which accommodate for rod and bar products, and ASTM B171/B171M for plate, sheet, strip, and rolled bar.

Where can I find a complete guide to UNS C61900 aluminum bronze as a PDF document?

In addition to PDF documents that provide all information on UNS C61900 on various platforms such as ASTM, material supplier's websites, online materials databases, and academic repository.