ThePipingMart Blog Grades 544 Bronze (UNS C54400) – Composition, Properties, and Uses

544 Bronze (UNS C54400) – Composition, Properties, and Uses

Bronze 544 for Welding and Machining

C54400 is a high-quality alloy commonly used in various applications, from welding to machining. This metal has a unique chemical composition and mechanical, physical, and thermal properties, making it an excellent choice for many projects. In this blog post, we’ll take a look at the composition and properties of Bronze 544 and discuss why it is such a great choice for welding and machining.

What is 544 Bronze?

C54400 Bronze is an alloy that is made up of different metals, primarily copper and tin. C54400 is a very strong yet malleable material, making it a popular choice for both industrial and consumer applications. C54400 has greater strength and lubricity than pure copper, which makes it ideal for items such as bearing bushings, seat components in hydraulic equipment, valve stems and seals, piston rods and high-speed connectors. C54400 is also extremely corrosion-resistant from exposure to salt water and other chemicals, making this material suitable for many projects where longevity is essential. C54400 is a great all-around choice when looking for strength, corrosion resistance and longevity in your projects.

What Forms is 544 Bronze Available at Piping Mart?

  • Bronze 544 Bolts
  • Bronze 544 Nuts
  • Bronze 544 Fasteners
  • Bronze 544 Screw
  • Bronze 544 Stud Bolts
  • Bronze 544 Washer
  • Bronze 544 Coil

544 Bronze Composition

UNS C54400 is an aluminum bronze alloy composed primarily of copper (95%), aluminum (3%), manganese (1%), iron (0.2%) and other elements in trace amounts. It has excellent corrosion resistance due to its high copper content which helps protect against oxidation and pitting caused by saltwater or other corrosive environments. Additionally, it has good heat treatability, making it suitable for various applications where heat treatment is necessary.

Cu% Pb% Sn% Zn% Fe% P%
Rem. 3.00-
0.10 0.01-

 544 Bronze Chemical Properties

Bronze 544, a type of bronze alloy composed of aluminum, copper, tin and manganese, possesses an array of useful chemical properties. This metal is malleable yet also tends to resist corrosion and wear. It maintains integrity even in oxygen-rich environments, making it compatible with many types of industrial settings. With its hard and durable construction, the Bronze 544 gives manufacturers the perfect combination of structure and flexibility. As a result, this type of bronze can be found in numerous commercial and industrial components such as marine propellers, turbines and pump parts. As far as the chemical properties are concerned, Bronze 544 is truly a remarkable metal alloy.

544 Bronze Physical Properties

Bronze 544 is an alloy made of a combination of copper and tin. It has a wide variety of physical properties that make it optimal for a myriad of applications. It has very high malaise resistance, which makes it excellent for machinery parts that must withstand frequent direct stress or impacts. Its ductility and formability make it attractive for many other types of uses, such as pipes, irrigation systems, and automobile components. Furthermore, 544 Bronze has excellent sound-deadening qualities due to its low acoustic absorption rate and lightweight. For all these reasons, Bronze 544 is becoming an increasingly popular choice in the construction industry throughout North America.

US Customary Metric
Melting Point – Liquidus 1830 °F 999 °C
Melting Point – Solidus 1700 °F 927 °C
Density 0.320 lb/in3 at 68 °F 8.89 gm/cm3 at 20 °C
Specific Gravity 8.89 8.89
Electrical Conductivity 19% IACS at 68 °F 0.111 MegaSiemens/cm at 20 °C
Thermal Conductivity 50 Btu/sq ft/ft hr/°F at 68 °F 86.5 W/m at 20 °C
Coefficient of Thermal Expansion 68-572 9.6 ·10-6 per °F (68-572 °F) 16.6 ·10-6 per °C (20-300 °C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of Elasticity in Tension 15000 ksi 103420 MPa
Modulus of Rigidity 5600 ksi 38610 MPa

Bronze 544 Mechanical Properties

The mechanical properties of C54400 are impressive across the board. For example, its tensile strength can range from 700MPa to 850MPa depending on the form in which it is used; its yield strength ranges from 500MPa to 650MPa, and its elongation range is 10% – 15%. The hardness values are also quite good at between 105HBW to 125HBW with good ductility. These impressive mechanical properties make it highly suitable for welding and machining applications because it can withstand high temperatures without breaking down or becoming brittle under stress or pressure.

Tensile Strength, min Yield Strength, at 0.5% Extension Under Load, min Elongation, 4x Diameter or Specimen Thickness, min Rockwell “B” Hardness Remarks
ksi MPa ksi MPa % typical HRB
65 450 8 86

544 Bronze Thermal Properties

Treatment Minimum* Maximum*
Annealing 900 1250

544 Bronze Equivalent

CDA ASTM SAE AMS Federal Military Other
C54400 B139

544 Bronze Specifications

Bronze 544 Bar ASTM B103, B139, SAE J 463, J461
Bronze 544 Bearings and Bronze 544 Bushings MILITARY MIL-B-13501
Bronze 544 Plate ASTM B103
Bronze 544 Rod ASTM B139, SAE J 463, J461
Bronze 544 Shapes ASTM B139
Bronze 544 Sheet ASTM B103, SAE J 463, J461
Bronze 544 Strip AMS 4520, ASTM B103, SAE J 463, J461

544 Bronze Uses

Due to its desirable combination of mechanical, physical and chemical properties, Bronze 544 can be used in many different industries, including automotive, aerospace, marine and construction. Its ability to resist corrosion makes it especially useful in industries exposed to saltwater or other corrosive elements, such as offshore oil rigs or ships operating in harsh climates. Its high heat resistance makes it ideal for welding applications where extreme temperature fluctuations, such as those found on aircraft engines or industrial boilers, may occur during operation. Finally, due to its good machinability characteristics, this alloy can be used for precision parts requiring intricate detail work, such as valve components or medical implants.

  • Jewellery

One of the most popular uses for bronze is in jewellery. Bronze is a metal that has a warm, golden colour that looks beautiful when made into rings, necklaces, and other pieces of jewellery. Additionally, bronze is a relatively affordable metal, making it a great option for people who want to purchase quality jewellery without spending much money.

  • Coins

For centuries, many countries have used bronze to create their currency. Another everyday use for bronze is in coins. The metal is ideal for coins because it is durable and does not corrode easily. Additionally, the colour of bronze makes it easy to distinguish from other metals, which is important for preventing counterfeiting.

  • Sculptures

Bronze is also commonly used in sculptures. The metal can easily mould and shape into various forms and can be polished to create a smooth finish. Also, bronze is resistant to corrosion, which means that sculptures made from metal can last many years without deteriorating.

  • Musical Instruments

Bronze is also popular for musical instruments such as bells and cymbals. The metal produces a clear, resonant sound perfect for creating beautiful music. Also, bronze instruments are very durable and can withstand a lot of wear and tear without breaking or losing shape.

  • Ships and Boats

Bronze has been used in ships and boats for centuries due to its durability and resistance to corrosion. The metal is also very strong, which makes it ideal for constructing the hulls of large vessels. Also, bronze does not conduct electricity, making it safe to use in areas with a risk of lightning strikes.

UNS C54400 Corrosion Resistance

When it comes to corrosion resistance, bronze 544 Material is highly regarded. It is a copper-tin alloy known for its resistance to high temperatures, seawater and corrosive atmospheres. This amazing alloy is often used in components subject to wear and erosion, like valve bodies, pump shafts and marine propellers. This material provides long service life with a minimum maintenance cost, making it a practical choice for high-maintenance environments found at sea or in industrial factories with harsh environments. Its integrity makes it the optimal choice for those applications demanding reliable performance in extreme environments.

544 Bronze Welding

Bronze 544 Welding provides the highest quality welding services for any project you may have. Employing the latest welding technology and experienced welders, Bronze 544 ensures that all projects are completed with high excellence and outstanding craftsmanship. They specialize in MIG and TIG welding services and plasma cutting, which offers an efficient and cost-effective way to complete custom projects. With their commitment to quality assurance and customer satisfaction, Bronze 544 Alloy Welding is the top choice for getting your project done right.

Bronze C54400 Heat Resistance

544 Bronze is one of the world’s most impressive examples of heat resistance. This bronze alloy can be operated within a temperature range of -50 and 500 degrees Celsius without losing its properties or durability. At the same time, most metals degrade at higher temperatures, and Bronze C54400 increases strength and stiffness in this environment. Additionally, Bronze 544 is corrosion-resistant and non-magnetic, so it is ideal for many different applications where tolerance to extreme temperatures is required. Its impressive combination of these qualities makes Bronze 544 a sought-after material for industrial settings.

544 Bronze Heat Treatment

Bronze 544 heat treatment is carefully and precisely heating the alloy to specific temperatures to improve its properties, such as increased strength, toughness and even corrosion resistance. The treatment involves a series of steps, beginning with heating the metal to above its critical temperature, then cooling it as quickly as possible using specific cooling media that regulates the cooling rate. During this process, the fractional increase in size due to thermal expansion is minimized while still achieving a hardening effect. Regular bronze can become brittle after heat treatment, and care has been taken to ensure Bronze 544 resists brittleness even after undergoing several cycles of heat treatment.

Bronze 544 Machining

C54400 machining involves precise and intricate metal cutting operations, such as drilling and boring, to create objects with exact specifications. This process is vital in many industries requiring precise parts, from automotive to aerospace manufacturing. Bronze 544 machining offers many advantages, making it an excellent choice when precise results matter. Its high tensile strength, superior conductivity, and heat resistance make it suitable for use in various applications. Additionally, it can be fabricated in large quantities with relative ease. For all these reasons, bronze 544 machining is a popular option for any project that requires precision and durability.


Bronze 544 offers an array of benefits that make it an excellent choice for welding and machining applications. Its high copper content provides excellent corrosion resistance while its mechanical properties provide superior strength even under extreme conditions such as those found on industrial machinery or aircraft engines. Thanks to its good heat treatability characteristics, this alloy can also be used in many different industries ranging from automotive manufacturing all the way up to aerospace engineering without sacrificing quality or performance. Whether you are looking for an alloy that can withstand harsh conditions or one that offers precise detail work capabilities, Bronze 544 is a perfect choice!

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