What is C28000 brass?
C28000 brass pipe is a high-quality brass tube material with excellent mechanical properties and corrosion resistance. It is composed of copper (Cu) and zinc (Zn). The copper content is about 58-62%, and the zinc content is about 38-42%. It is one of the most commonly used brass alloys. C28000 brass tube has good processing performance, strength, mechanical properties, and good corrosion resistance.
Physical Properties
| Physical Properties | Original Value | Comments |
|---|---|---|
| Density | 8.39 g/cc |
Mechanical Properties
| Mechanical Properties | Original Value | Comments |
|---|---|---|
| Hardness, Rockwell B | 75 | |
| Tensile Strength, Ultimate | 485 MPa | |
| Tensile Strength, Yield | 345 MPa | |
| Elongation at Break | 10 % | In 50 mm |
| Modulus of Elasticity | 105 GPa | |
| Poissons Ratio | 0.346 | |
| Machinability | 40 % | UNS C36000 (free-cutting brass) = 100% |
| Forgeability | 90 % | |
| Shear Modulus | 39.0 GPa | |
| Shear Strength | 305 MPa |
Electrical Properties
| Electrical Properties | Original Value | Comments |
|---|---|---|
| Electrical Resistivity | 0.00000616 ohm-cm |
Thermal Properties
| Thermal Properties | Original Value |
|---|---|
| CTE, linear | 20.8 µm/m-°C @Temperature 20.0 - 300 °C |
| Specific Heat Capacity | 0.375 J/g-°C |
| Thermal Conductivity | 123 W/m-K @Temperature 20.0 °C |
| Melting Point | 900 - 905 °C |
| Solidus | 900 °C |
| Liquidus | 905 °C |
| Annealing Point | 800 - 1100 °F |
Processing Properties
| Processing Properties | Original Value |
|---|---|
| Annealing Temperature | 425 - 600 °C |
| Hot-Working Temperature | 625 - 800 °C |
Component Elements Properties
| Component Elements Properties | Original Value |
|---|---|
| Copper, Cu | 59 - 63 % |
| Iron, Fe | <= 0.070 % |
| Lead, Pb | <= 0.30 % |
| Zinc, Zn | 40 % |
FAQ
| What is the composition of brass c28000? Brass UNS C28000 (equivalent to H62) is primarily 60.0-63.0% Copper and 37.0-40.0% Zinc. It is a low-lead brass with a maximum lead (Pb) content of 0.30% (typically much lower). Iron is limited to a maximum of 0.07%, and total other impurities do not exceed 0.15%. This composition provides a strong, formable, and versatile general-purpose brass. |
| What is the difference between brass 260 and 280? C260 plates and sheets are the most ductile of the brasses, and is used in greater quantity than any other copper-zinc alloy. C280 (Muntz) most important characteristic is its color, and is stronger, harder and more rigid than brasses of lesser zinc content. |
| What is C28000 brass? C28000 brass is a standardized copper-zinc alloy under the UNS system, commonly known as Muntz Metal. It contains approximately 60% copper and 40% zinc, offering a good balance of strength, formability, and corrosion resistance. |
| What is the chemical composition of C28000 brass? The nominal composition is 60.0-63.0% copper, 0.30% maximum lead, 0.07% maximum iron, and the remainder being zinc. The total of other impurities is limited to 0.15%. |
| What is C28000 brass equivalent to? C28000 brass is the direct U.S. equivalent to China's H62 brass, Europe's CuZn37 (CW508L), and Japan's C2800 brass. |
| What are the mechanical properties of C28000 brass? In the annealed condition, typical properties include a tensile strength of ≥ 370 MPa, yield strength of ≥ 150 MPa, elongation of ≥ 20%, and a hardness of approximately 65 HRB. |
| What is the machinability rating of C28000 brass? C28000 brass has a fair machinability rating of around 40% on the standard scale where free-cutting brass C36000 is rated at 100%. It produces continuous chips. |
| What is C28000 brass used for? C28000 brass is widely used in architectural hardware (hinges, locks), electrical connectors, heat exchanger components, plumbing fittings, decorative trim, and various stamped parts. |
Our factory
We operate a modern, specialized copper production facility equipped with advanced continuous casting and rolling lines, precision CNC machining equipment, and a rigorous quality inspection system, focusing on the manufacturing of copper tubes, plates, rods, wires, and strips. The factory is ISO9001 certified and possesses a complete industry chain capability-from raw material smelting and precision processing to finished product sorting. With an annual production capacity of tens of thousands of tons, we can flexibly handle customized orders, ensuring that our products meet international standards in dimensional accuracy, mechanical properties, and surface finish.
Copper product packaging
We implement customized packaging solutions based on product characteristics: copper tubes and rods are wrapped with moisture-resistant kraft paper, reinforced with bundling, and secured on wooden pallets or iron frame boxes to prevent deformation and damage during transit. Copper plates and strips are covered with protective film, separated by foam padding between layers, and externally secured with steel strapping along with waterproof packaging. Wires are coiled on industrial reels or vacuum-packed with plastic film. All packaging includes clear labels indicating product specifications, batch numbers, and protective symbols, ensuring safe delivery during long-distance sea and land transportation.
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