ThePipingMart Blog Grades 614 Bronze (UNS C61400) – Composition, Properties, and Uses

614 Bronze (UNS C61400) – Composition, Properties, and Uses

Bronze 614

Bronze 614 is an alloy composed of copper, nickel, and zinc that is both strong and corrosion-resistant. It is a popular choice for industrial applications due to its excellent properties. Let’s take a closer look at the composition, chemical properties, mechanical properties, physical properties, uses, corrosion resistance, heat resistance, heat treatment requirements, and machining instructions for bronze 614.

What Forms is 614 Bronze Available at Piping Mart?

  • Bronze 614 Bars
  • Bronze 614 Bolts
  • Bronze 614 Pipes
  • Bronze 614 Screw
  • Bronze 614 Tubing
  • Bronze 614 Valves
  • Bronze 614 Washers
  • Bronze 614 Flanges
  • Bronze 614 Fasteners

614 Bronze Chemical Composition

C61400 contains 82% copper (Cu), 12-18% nickel (Ni), 1-2% silicon (Si), 1-2% manganese (Mn), 0.1-0.4% iron (Fe), and 0.5%-1% zinc (Zn). Its melting point is 1065°C / 1950°F, and its density is 8.4 g/cm³. Its tensile strength ranges from 270-500 N/mm², and its hardness ranges from 20-50 HV10. It has good electrical conductivity as well as thermal conductivity in comparison with other nonferrous metals. Additionally, it has a high strength-to-weight ratio which makes it ideal for many applications.

Element Cu (1,2) Pb Zn Fe P Al Mn
Min % 1.5 6
Max % Rem 0.01 0.2 3.5 0.015 8 1

614 Bronze Chemical Properties

UNS C61400 is an alloy composed of 88% copper and 12% tin. It has several unique advantages due to its chemical composition, including excellent corrosion resistance and low friction characteristics. Its strength and hardness make it useful for a wide range of applications in the engineering industry, from automobiles to aerospace components. Its reduced electrical conductivity makes it ideal for wireless transmitters and receivers, while its low melting point allows for easier machining of metals. Its compatibility with other metals makes it an excellent choice for welding operations too. All in all, Bronze 614’s chemical properties make it a versatile material that can be used to solve many technical problems faced by engineers today.

614 Bronze Mechanical Properties

Properties such as strength, corrosion resistance and formability make engineering brass alloy UNS C61400 an attractive option for many applications. Its excellent machinability makes it ideal for parts requiring shaping, drilling and tapping and the precise dimensional tolerances resulting from its good press-forming qualities make this brass suitable for intricate parts with tight tolerance requirements. This all-purpose alloy also exhibits excellent fatigue strength in highly stressed components and good weldability makes it an ideal choice for many assemblies. Moreover, UNS C61400 also resist dezincification and is often used in environments that require resistance to aggressive media. All of these features combine to make UNS C61400 a top-seller for engineers looking for material that can hit all the performance criteria without breaking the bank.

Temper Thickness Tensile Str. Yield Str. Elong. Rockwell Shear Str.
B C F 30T
H04 12.7mm (0.5in) 586MPa (85ksi) 310MPa (45ksi) 35% 91 331MPa (48ksi)
25.4mm (1in) 565MPa (82ksi) 276MPa (40ksi) 35% 90 310MPa (45ksi)
51mm (2in) 552MPa (80ksi) 241MPa (35ksi) 35% 88 276MPa (40ksi)

614 Bronze Physical Properties

The main physical property of UNS C61400 is its excellent wear resistance which makes it ideal for components that are subject to wear, such as gear wheels or bearing races, etc. It also has good fatigue strength, which makes it suitable for components subjected to fluctuating loads such as crankshafts etc., as well as good sliding properties making it suitable for plain bearings or bushings, etc.

Melting Point – Liquidus ⁰F 1915
Melting Point – Solidus ⁰F 1905
Density lb/cu in. at 68⁰F 0.285
Specific Gravity 7.89
Electrical Conductivity % IACS at 68⁰F 14
Thermal Conductivity Btu/sq ft/ft hr/ ⁰F at 68⁰F 39
Coefficient of Thermal Expansion 10-6 per ⁰F (68-572 ⁰F) 9
Specific Heat Capacity Btu/lb/⁰F @ 68 ⁰F 0.09
Modulus of Elasticity in Tension ksi 17000
Modulus of Rigidity ksi 6400

614 Bronze Equivalent

Pipe Sml Pipe Welded Tube Smls Tube Welded Sheet / Plate Bar Forging Fitting
B366, B564

614 Bronze Specifications

Product Specification
614 Bronze Electrode, 614 Bronze Welding AWS A5.6
614 Bronze Rod, 614 Bronze Welding AWS A5.7, A5.15, A5.13
614 Bronze Wire AWS A5.7
614 Bronze Wire, 614 Bronze Metallizing MILITARY MIL-W-6712

614 Bronze Uses

The outstanding corrosion resistance of Bronze C61400 makes it perfect for use in acidic environments such as foundries or marine industries where other materials may not be able to withstand the conditions. It can also be used in food processing equipment due to its non-toxic nature since there are no heavy metals present in the alloy composition of bronze 614.


One of the most popular uses for bronze is in jewelry making. Bronze is a metal that has a warm color, which makes it a popular choice for people who want to create unique and stylish pieces of jewelry. Additionally, bronze is a fairly strong metal, which means that it can be used to create pieces of jewelry that are both durable and beautiful.


Bronze is also a popular choice for sculptures, as it is a metal that can be easily shaped and molded into intricate designs. Additionally, bronze sculptures often have a beautiful patina that develops over time, which can add to their beauty and value.


Coins are another common use for bronze, as the metal is both durable and easy to mint into coins of different denominations. Additionally, the color of bronze makes it an ideal choice for creating collector’s coins that are both visually appealing and valuable.

Musical Instruments

Musical instruments are often made from bronze, as the metal is able to produce a wide range of tones and pitches. For example, many cymbals are made from bronze, as the metal is able to produce a bright and distinct sound. Additionally, many brass instruments, such as trumpets and trombones, are also made from bronze.

Electrical Components

C61400 Bronze is also often used in electrical components such as switches and connectors. This is because bronze is an excellent conductor of electricity and is also resistant to corrosion. Additionally, bronze components are often used in high-voltage applications where other metals would be unable to withstand the electrical current.


Bearings are another common use for bronze, as the metal is able to withstand high levels of friction without being damaged. Additionally, bronze bearings are often used in high-speed applications where other metals would fail due to the friction generated by the moving parts.

Pipe Fittings

Pipe fittings are another common use for bronze, as the metal is resistant to both corrosion and wear. Additionally, bronze pipe fittings are often used in high-pressure applications where other metals would be unable to withstand the pressure without failing.


C61400 welding is an advanced technique used to join two pieces of bronze together. It involves melting both pieces of the bronze with a high-temperature torch and then injecting a molten filler metal into the joint. This process requires skill, expertise, and caution to ensure a secure bond between the two pieces. When successfully done, this welding method can create attractively strong joints that are highly resistant to weathering and corrosion. Bronze 614 welding is one of the most reliable ways to ensure quality connections for even the most complex projects.

Corrosion Resistance

If you’re looking for a reliable and long-lasting material, look no further than C61400. This alloy of copper and tin is known for its corrosion resistance, meaning it can withstand exposure to even the harshest of conditions without deterioration. It also benefits from superior wear and abrasion resistance due to its metal matrix structure – making it perfect for items that will get hammered into heavy use or sea applications. Plus, its impressive tensile strength allows it to be used in specialist engineering applications where exceptionally strong materials are needed. When it comes to reliability over many years, bronze 614 provides an ideal solution.

Heat Resistance

C61400 is a new type of heat-resistant alloy that is garnering attention from various industries. The alloy consists of manganese, phosphorus, and special additives, which allow it to handle extreme temperatures without deteriorating or becoming brittle. This makes it useful for numerous applications where durability and strength are paramount, such as aerospace components and heavy-duty equipment. It provides 15-20% greater corrosion protection than most alloys due to the addition of copper and nickel, enabling it to last longer in exposure to oxygenated environments. Furthermore, its low thermal expansion rate allows for uniform heat distribution so that complete operation can be achieved. All in all, Bronze 614 represents a breakthrough in reliable and durable heat resistance technology sure to positively benefit many industries.

Heat Treatment

Bronze 614 does not require heat treatment after welding due to its low coefficient of thermal expansion during the cooling process, which prevents warping or distortion. However, if necessary, the material can be hardened by heat treatments such as quenching or tempering. The maximum temperature recommended for welding without preheating is 500°C / 932°F.   Machining Instructions   When machining bronze 614, high-speed steel cutting tools should be used with plenty of coolants supplied at all times. This will help prevent tools from becoming blunt quickly – reducing tooling costs over time – as well as aid chip evacuation from the workpiece. The recommended cutting speed should be between 15 – 25 m/min depending on the depth of cut taken. Lubricants should also be used where possible when drilling, tapping, or reaming the material to reduce friction between the tool and the work surface.


Bronze 614 is an alloy made up primarily of copper, nickel, and zinc that offers excellent wear resistance, fatigue strength, sliding properties, corrosion resistance, and heat resistance – making it perfect for industrial applications such as gear wheels, bearing races, crankshafts, plain bearings or bushings in acidic environments such as foundries or marine industries. Its low coefficient of thermal expansion during the cooling process means it does not need heat treating after welding, while its machinability ensures further customizations can easily be made without too much difficulty. With all these qualities combined together with its reasonable cost, bronze 614 clearly stands out amongst other materials available on the market today!

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