ThePipingMart Blog Grades C46400 Naval Brass – Composition, Properties, and Uses

C46400 Naval Brass – Composition, Properties, and Uses

C46400 Naval Brass

Brass has been used since ancient times for various purposes, such as ornaments, coins, and household items. It is an alloy of copper and zinc, but several brass alloys have different ratios of copper and zinc. One of the most popular brass alloys today, especially in marine and industrial applications, is C46400 Naval Brass. This blog post will dive deep into what C46400 Naval Brass is, its composition, physical and mechanical properties, and its uses.

C46400 Naval Brass Composition

C46400 Naval Brass comprises about 60% copper, 39.2% zinc, and 0.8% tin. The tin is added to improve the brass’s resistance to dezincification, a corrosion process that affects brass alloys in seawater. The material also contains small amounts of iron, lead, and nickel. The composition of C46400 Naval Brass makes it suitable for marine applications due to its excellent corrosion resistance and good formability.

Min/Max 59.0 – 62.0 0.1 0.2 0.5 – 1.0 Rem
Nominals 60.0000 0.7000 39.2000

C46400 Naval Brass Physical Properties

C46400 Naval Brass is reddish-gold, and its density is 8.53 g/cm³. It has a melting point of 900-940°C, and its thermal conductivity is 121 W/mK, making it an excellent heat conductor. The material has good electrical conductivity, making it ideal for electrical components. C46400 Naval Brass has good machinability in machining, making it easy to work with, shape, and form.

Coefficient of Thermal Expansion 11.8 ÌÎ?̴ÌÁ10-6 per oF (68-572 F) 21.2 ÌÎ?̴ÌÁ 10 6? per ÌÎ?̴åÁC (20-300 C)
Density 0.304 lb/in3 @ 68 F 8.41 gm/cm3 @ 20 C
Electrical Conductivity 26 %IACS @ 68 F 0.152 MegaSiemens/cm @ 20 C
Electrical Resistivity 39.9 ohms-cmil/ft @ 68 F 6.63 microhm-cm @ 20 C
Melting Point Liquid US 1650 F 899 C
Melting Point Solid US 1630 F 888 C
Modulas of Elasticity in Tension 15000 ksi 103400 MPa
Modulas of Rigidity 5600 ksi 38610 MPa
Specific Gravity 8.41 8.41
Specific Heat Capacity 0.09 Btu/lb/ÌÎ?̴åÁF @ 68 F 377.1 J/kg ÌÎ?̴ÌÁ ÌÎ?̴åÁK at 293 K
Thermal Conductivity 67.0 Btu ÌÎ?̴ÌÁ ft/(hr ÌÎ?̴ÌÁ ft2 ÌÎ?̴ÌÁÌÎ?̴åÁF) @ 68 F 116.0 W/m ÌÎ?̴ÌÁ ÌÎ?̴åÁK at 20 C

C46400 Naval Brass Mechanical Properties

The mechanical properties of C46400 Naval Brass depend on the heat treatment it undergoes. In its annealed state, it has a tensile strength of 450 MPa, yield strength of 200 MPa, and an elongation of 35%. After hard work, its strength increases, with a tensile strength of up to 900 MPa, yield strength of 490 MPa, and an elongation of 15%. The material’s fatigue strength is also high, making it suitable for load-bearing applications.

C46400 Naval Brass Uses

C46400 Naval Brass is widely used in marine and industrial applications, especially those that require good corrosion resistance. Its common uses include marine hardware, pumps, valves, fittings, and fasteners. It is also ideal for electrical components such as connectors, contact springs, and switches. C46400 Naval Brass is a versatile material, and its properties make it suitable for various applications in different industries.

C46400 Naval Brass Hardness and Heat Treatment

C46400 Naval Brass has a relatively low hardness in its annealed state, with a Brinell hardness of 80. However, it can be hardened through cold working and heat treatment. Heat treatment involves annealing the material at 500-650°C for several hours, followed by air cooling. This process increases the material’s hardness and strength, making it suitable for various applications.

C46400 Naval Brass Welding and Corrosion Resistance

C46400 Naval Brass is suitable for welding using various techniques such as gas tungsten arc welding, gas metal arc welding, and brazing. However, caution should be taken to avoid overheating, which can lead to cracking and porosity. The material is highly corrosion-resistant in seawater and brackish water environments, making it ideal for marine applications.


C46400 Naval Brass is a popular brass alloy widely used in marine and industrial applications. Its composition, physical and mechanical properties make it an excellent choice for various applications. From its high strength and good formability to its excellent corrosion resistance, C46400 Naval Brass is a material that can be counted on to fulfil numerous needs. By understanding its properties and capabilities, designers and engineers can choose the right material for their applications.

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