What is the difference between naval brass and admiralty brass?

UNS C44300 Admiralty Brass Tube PDF

Naval brass, also known as C46400, is a type of brass alloy that is made up of approximately 60% copper, 39.2% zinc, and 0.8% tin. The addition of tin provides naval brass with excellent corrosion resistance in seawater and other harsh environments. This alloy also has good strength and ductility, making it suitable for use in marine hardware, valves, and pumps.
 

Admiralty brass, also known as C44300, is another type of brass alloy that is commonly used in marine applications. This alloy contains approximately 70% copper, 28% zinc, and small amounts of tin and iron, with trace amounts of other elements. Admiralty brass is known for its excellent corrosion resistance in seawater and other aggressive environments, as well as its good strength and ductility. It is commonly used in heat exchangers, condensers, and other marine applications.

The key difference between naval brass and admiralty brass is the tin content. Naval brass contains a higher percentage of tin than admiralty brass, which gives it superior corrosion resistance in seawater. However, this also makes it more expensive than admiralty brass. Admiralty brass, on the other hand, has slightly better strength and is more economical than naval brass.

The choice between the two will depend on the specific application and the desired properties, with naval brass being preferred for applications where superior corrosion resistance is required, and admiralty brass being a more economical option for applications where slightly lower corrosion resistance is acceptable.

Founded in 2008, we are a leading professional exporter specializing in a comprehensive range of high-quality copper products for global markets. Our core product portfolio encompasses various forms and specifications to meet diverse industrial needs.

Copper Tubes & Pipes:
We supply both Copper Seamless Tubes (ASTM B68, B75) and Copper Welded Tubes, including Pure Copper Tubes (C11000, C12200), Brass Tubes (C23000, C26000, C28000), and specialized Admiralty Brass Tubes (C44300) for superior corrosion resistance in heat exchanger applications. Our offerings comply with key ASTM standards such as ASTM B88 for seamless water tube and ASTM B111 for condenser tubes.

Copper Sheets & Plates:
Our range covers from thin-gauge Thin Copper Sheet (ASTM B152) to heavy-duty Thick Copper Plate, available in alloys like Pure Copper (C11000), Brass Sheet (C26000), Phosphor Bronze Sheet (C51000, C52100), and corrosion-resistant Admiralty Brass Sheet/Plate (C44300).

Copper Rods & Bars:
We provide Copper Round Rod, Copper Square Bar, Copper Hexagon Bar, and Copper Flat Bar in various tempers. Products include Free-Cutting Brass Rod (C36000 per ASTM B16), Oxygen-Free Copper Rod (C10100/C10200, ASTM B187), Beryllium Copper Bar (C17200, ASTM B196), and Admiralty Brass Rod (C44300).

Copper Wires & Strips:
Our Copper Wire products include Bare Copper Wire (ASTM B1/B2/B3), Enamelled Copper Wire, and Brass Wire. We also supply precision Copper Strip (C11000, C26800), Brass Strip, and Admiralty Brass Strip (C44300) for electrical, marine, and fabrication applications.