C3604 Brass tube is a free-cutting copper-zinc-lead alloy containing about 60% copper and 3% lead, known for its excellent machinability, moderate strength of around 400 MPa, and good corrosion resistance, making it ideal for precision valves, fittings, and automotive components.
Product Parameters
|
Parameter Category |
Typical Value / Range |
|
Alloy Designation |
C2680 (Cartridge Brass / CuZn33) |
|
Tensile Strength (σᵦ) |
340–490 MPa |
|
Yield Strength (σ₀.₂) |
150–250 MPa |
|
Elongation (A₅) |
20–45 % |
|
Hardness (HV) |
80–150 HV |
|
Melting Point |
900–940 °C |
|
Electrical Conductivity |
Approx. 28 % IACS |
|
Thermal Conductivity |
Around 120 W/(m·K) |
|
Coefficient of Thermal Expansion |
20.9 × 10⁻⁶ /°C |
|
Tube Outer Diameter Range |
3 mm – 120 mm |
|
Wall Thickness Range |
0.3 mm – 10 mm |
|
Length |
Up to 6 meters or as specified |
|
Surface Finish |
Bright, polished, or mill finish |
|
Key Features |
Excellent cold workability, corrosion resistance, and thermal conductivity |
|
Typical Applications |
Heat exchangers, condensers, plumbing systems, decorative hardware, and precision mechanical parts |
Chemical Composition
|
Grade |
Cu |
Fe |
Pb |
Zn |
|
C2200 |
89.0-91.0 |
＜0.05 |
＜0.05 |
Remainder |
|
C2300 |
84.0-86.0 |
＜0.05 |
＜0.05 |
Remainder |
|
C2600 |
68.5-71.5 |
＜0.05 |
＜0.05 |
Remainder |
|
C2680 |
64.0-68.0 |
＜0.05 |
＜0.05 |
Remainder |
|
C2801 |
59.0-62.0 |
<0.07 |
<0.10 |
Remainder |
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