What is C28000 brass?
The C28000 brass composition typically includes 60% copper and 40% zinc, giving the material excellent corrosion resistance, formability, and tensile strength. The characteristics of this alloy make it an excellent choice for marine fittings, structural components, heat exchangers, and electrical connectors. We adhere to ASTM B135 and ASTM B587 standards to guarantee precise dimensions, uniform wall thickness, and a smooth surface finish. The alloy is designed to withstand dezincification and stress corrosion, ensuring it lasts a long time even in tough conditions.
C28000 Muntz Metal Typical Uses
Some of the typical areas that C28000 is used in are as follows:
Architectural Panels
Decorations
Door Frames
Hardware
Trim
Bolts
Brazing Rods
Condenser Plates
Evaporator Tubes
Heat Exchanger Tubes
Hot Forgings
Large Nuts and Bolts
Valve Stems
C28000 Muntz Metal Chemical Composition
(%max., unless shown as range or min.)
| Cu | Pb | Zn | Fe | |
| Min./Max. | 59.0-63.0 | .09 | Rem | .07 |
C28000 Muntz Metal Mechanical Properties
| Form | Temper | Temper Code |
Tensile Strength (ksi) |
Yield Strength (0.5% ext. under load) |
Elongation | Rockwell Hardness "B" |
Rockwell Hardness "F" |
Rockwell Hardness "30T" |
Shear Strength |
Torsion Modulus (ksi) Hard. |
Ultimate Tensile Strength in Shear (ksi) |
Section Size (in) |
Cold Work (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flat Products | 1/2 Hard | H02 | 70 Typ | 50 Typ | 10 Typ | 75 Typ | - | 67 Typ | 44 Typ | - | - | 0.04 | - |
| 1/8 Hard | H00 | 60 Typ | 35 Typ | 30 Typ | 88 Typ | - | 54 Typ | 42 Typ | - | - | 0.04 | - | |
| As Hot Rolled | M20 | 54 Typ | 21 Typ | 45 Typ | - | 85 Typ | 49 Typ | 40 Typ | - | - | 0.04 | - | |
| Soft Anneal | O60 | 54 Typ | 21 Typ | 45 Typ | - | 80 Typ | 46 Typ | 40 Typ | - | - | 0.04 | - | |
| Flat Products And Rod |
Annealed | O61 | 54 Typ | 21 Typ | 45 Typ | - | - | - | - | - | 40 Typ | 0.04 | - |
| O61 | 54 Typ | 21 Typ | 50 Typ | - | - | - | - | - | 40 Typ | 1 | - | ||
| Rod | 1/4 Hard | H01 | 72 Typ | 50 Typ | 25 Typ | 78 Typ | - | - | - | 5.7 Typ | 45 Typ | 1 | - |
| As Hot Extruded | M30 | 52 Typ | 20 Typ | 52 Typ | - | 78 Typ | - | 39 Typ | - | - | 1 | - | |
| Soft Anneal | O60 | 54 Typ | 21 Typ | 50 Typ | - | 80 Typ | - | 40 Typ | - | - | 1 | - | |
| Tube | Hard | H04 | 74 Typ | 55 Typ | 10 Typ | 80 Typ | - | - | - | - | - | - | 30 |
| Light Anneal | O50 | 56 Typ | 23 Typ | 50 Typ | - | 82 Typ | 47 Typ | - | - | - | - | - |
C28000 Applicable Specs
| Product | Sub Form | Specific Sub-Form | Application | Standard | Description |
|---|---|---|---|---|---|
| Bar | ASTM B36 / B36M | Brass Plate, Brass Sheet, Brass Strip, Brass Rolled Bar | |||
| Plate | ASTM B36 / B36M | Brass Plate, Brass Sheet, Brass Strip, Brass Rolled Bar | |||
| Seamless Condenser Tube and Ferrule Stock | Condenser Tube | ASME SB111 | Copper and Copper Alloy Seamless Condenser Tubes, Ferrule Stock | ||
| Condenser Tube | ASTM B111 / B111M | Copper and Copper Alloy Seamless Condenser Tubes, Ferrule Stock | |||
| Seamless Tube | ASME SB135 | SEAMLESS BRASS TUBE | |||
| Sheet | ASTM B36 / B36M | Brass Plate, Brass Sheet, Brass Strip, Brass Rolled Bar | |||
| Strip | ASTM B36 / B36M | Brass Plate, Brass Sheet, Brass Strip, Brass Rolled Bar | |||
| Tube | Seamless | ASTM B135 | Brass Brass Tube, Brass Seamless | ||
| Seamless (Metric) | ASTM B135 / B135M | Seamless Brass Tube | |||
| Seamless | Federal WW-T-791 | Tubing: Brass, Seamless |
FAQ
| 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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