ThePipingMart Blog Grades 280 Brass (C28000) – Composition, Properties, and Uses

280 Brass (C28000) – Composition, Properties, and Uses

Brass 280

Brass is one of the most common materials used in machining and manufacturing. When it comes to brass alloys, brass 280 stands out as a popular choice due to its unique properties. In this blog post, we’ll discuss what makes brass 280 special and learn more about its composition, chemical properties, mechanical properties, physical properties, uses, corrosion resistance, and heat resistance.

What Forms is Brass 280 Available at Piping Mart?

  • Brass 280 Tubing
  • Brass 280 Coil
  • Brass 280 Foil

280 Brass Composition

UNS C82000 is an alloy composed of copper (70-75%), zinc (24-30%), lead (0.2-0.8%), and tin (0.1%). This composition creates a malleable metal with excellent machinability that can withstand high temperatures and resist wear.

Residual 0 – 0.3
Fe 0 – 0.07
Cu 59 – 63
Zn 36.3 – 41
Pb 0 – 0.3

280 Brass Chemical Properties

C280 has excellent dezincification and atmospheric corrosion resistance due to its high copper content. It is also resistant to hydrochloric acid at room temperature concentrations up to 5%. However, it is not recommended for use in caustic solutions or environments with sulfur compounds due to the risk of sulfide stress corrosion cracking.

280 Brass C28000 Mechanical Properties

Because of its malleability and ductility, UNS C82000 Brass can be easily formed into complex shapes without losing strength or structural integrity. It has a tensile strength of 25-35 ksi (thousand pounds per square inch) and a yield strength of 20-30 ksi, making it suitable for heavy loads or applications that require high-stress levels.

Properties Metric Imperial
Hardness, Rockwell B 52 52
Tensile strength 345 MPa 50000 psi
Yield strength (@ 0.200%) 140 MPa 20300 psi
Elongation at break 20% 20%
Elastic modulus 117 GPa 17000 ksi
Poisson’s ratio 0.34 0.34
Fatigue strength ( @ 5,000,000 cycles, rotating beam) 125 MPa 18100 psi
Machinability (UNS C36000 (free-cutting brass) = 100) 30 30
Shear modulus 44 GPa 6380 ksi

280 Brass Physical Properties

One of the main advantages of brass C28000 is its ability to resist oxidation and wear at high temperatures. It has a melting point between 937°F – 1017°F (507°C – 550°C), depending on the alloying elements present in the material; this makes it suitable for applications involving extreme heat or friction such as bearings or gears in internal combustion engines.

Physical Properties 280
Density 0.303 lb/in3 0.303 lb/in3
Ultimate Tensile Strength 56 ksi 70.3 ksi
Yield Tensile Strength 32 ksi 50 ksi
Shear Strength 35 ksi 44.2 ksi
Shear Modulus 5,800 ksi 5,800 ksi
Hardness Rockwell | Brinell B55 | 89 B75 | 120
Elongation at Break Percentage 20% 10%
Modulus of Elasticity 15,000 ksi 15,000 ksi
Poisson’s Ratio 0.35 0.35
Machinability Percentage 40% 40%
Melting Point 1,650-1,660 °F 1,650-1,660 °F
Specific Heat 8.96 x 10^-2 BTU/lb-°F 8.96 x 10^-2 BTU/lb-°F
Thermal Conductivity 854 BTU-in/hr-ft^2-°F 854 BTU-in/hr-ft^2-°F
Electrical Conductivity 28% IACS 28% IACS

280 Brass Thermal Properties

The thermal properties of the UNS C82000 copper alloy are tabulated below.

Properties Metric Imperial
Thermal expansion co-efficient (@20-300°C/68-572°F) 17.8 µm/m°C 9.89 µin/in°F
Thermal conductivity (@20°C/68°F) 218 W/mK 1510 BTU in/hr.ft².°F

Brass 280 Specifications

Form System Standard
280 Brass Bar ASTM B36/B36M
280 Brass Plate ASTM B36/B36M
Seamless Condenser 280 Brass Tube & 280 Brass Ferrule Stock ASME SB111
ASTM B111/B111M
280 Brass Seamless Tube ASME SB135
280 Brass Sheet ASTM B36/B36M
280 Brass Strip ASTM B36/B36M
280 Brass Tube ASTM B135/B135M

280 Brass Uses

Due to its combination of properties—malleability, corrosive resistance, heat resistance brass 280 is often used in applications involving fluid flow systems such as pipes or pumps; valves; electrical components; automotive components; decorative objects; fasteners; fittings; castings; gaskets; nuts & bolts etc. It can also be used for bearing surfaces due to its low coefficient of friction which helps reduce wear on moving parts during operation.

280 Brass Corrosion Resistance

Brass 280 Alloy offers excellent corrosion resistance thanks to its high copper content. It prevents dezincification when exposed to water or other corrosive substances over time like most other alloys containing zinc. It also resists attacks from organic acids such as formic acid, acetic acid, and non-oxidizing mineral acids, including sulfuric acid in concentrations up to 15%.

280 Brass Heat Resistance

C28000 is one of the most versatile and dependable metals used in industrial applications – especially regarding heat resistance. With a melting point of nearly 1700 degrees Fahrenheit, Brass 280 is specially designed to retain its strength under extreme temperatures, making it an ideal material for constructing high-pressure equipment and parts exposed to harsh conditions. Its superior ability to resist oxidation makes it a perfect alloy for many industries, including energy production, chemical manufacturing and food processing. These qualities make Brass 280 the premier heat-resistant material on the market today.

280 Brass Heat Treatment

Heat treatment can be used on brass 280 if desired to improve its hardness or ductility but it should be done carefully since over-heating may cause embrittlement due to grain growth leading to cracks forming after cooling down again too quickly, which could compromise the structural integrity of the material if left unchecked. Generally speaking though, no heat treatment is necessary because the material already possesses good mechanical properties without any additional processing needed before use.

280 Brass Welding

Brass C28000 welding is a versatile and reliable method of joining two or more materials together. It’s suitable for many metals, such as brass, copper and stainless steel. During the process, an arc generates heat that melts the metal and binds it together. For best results, it must be performed in an area with a reduced airflow, ensuring no molten metal loss due to wind draft. The strength of the brass weld can be tailored by adjusting the wattage, oscillation speed and amperage levels—making this type of welding remarkably precise. With soldering products available at hardware stores and home improvement depots, Brass C28000 welding allows DIY enthusiasts to bring their projects to life in an economically friendly way.

280 Brass Machining

With an experienced team of machinists and the highest efficiency equipment available, brass 280 machining is one of Hurst Manufacturing’s specialties. Our impeccable track record in the industry is a testament to our commitment to providing ideal solutions for various applications where brass 280 machining is required. We use advanced testing methods to ensure that every product matches industry standards, and this is always followed up with strict quality-control measures. Thanks to our highly skilled, experienced staff and uncompromising commitment to quality, you can be confident that you will receive products which exceed your expectations when you choose Hurst Manufacturing for all your brass 280 machining needs.


As you can see from this blog post, brass C28000 offers excellent machinability along with superior corrosion resistance compared with other metals like steel or aluminium making it an ideal choice for many industrial applications where performance matters most, such as valves or pumps in fluid flow systems operating under extreme temperatures or pressures that would otherwise degrade other materials over time without proper maintenance protocols being followed regularly by trained personnel responsible for overseeing operations related directly linked with those types of processes taking place within an organization’s infrastructure framework by default until further notice accordingly. Therefore if you are looking for a reliable metal that will stand the test of time even under harsh conditions, then consider using brass 280!

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