ASTM B171 C46400 Naval Brass Tubesheet For Heat Exchanger Condenser
ASTM B171 C46400 tubesheets are core pressure-bearing components in shell-and-tube heat exchangers, condensers, and pressure vessels, used to secure and seal the tube bundle and withstand the pressure difference between the shell and tube sides.
This product is manufactured according to ASTM B171 standards and is made of UNS C46400 naval brass. C46400 is widely used in marine heat exchangers, power plant condensers, seawater desalination equipment, and other applications with stringent corrosion resistance requirements due to its superior performance in seawater and industrial corrosive environments.
ASTM B171 C46400 tubesheets are copper alloy tubesheet solutions for marine engineering, coastal power plants, and chemical industries operating in conditions requiring long-term stable operation with seawater/brackish water media at medium to low pressure.
| Chemical Composition (UNS C46400) |
| Element |
Content Range (%) |
| Cu (Copper) |
59.0 – 62.0 |
| Zn (Zinc) |
Remainder (approx. 37-40%) |
| Sn (Tin) |
0.50 – 1.00 |
| Fe (Iron) |
≤ 0.10 |
| Pb (Lead) |
≤ 0.20 |
| Physical and Mechanical Properties |
| Parameter |
Value |
Unit |
| Density |
8.4 – 8.53 |
g/cm³ |
| Melting Range |
885 – 900 |
°C |
| Thermal Conductivity (20°C) |
~110 – 116 |
W/(m·K) |
| Coefficient of Linear Expansion (0-250°C) |
21.2 |
×10⁻⁶/°C |
| Electrical Resistivity (15°C) |
6.5 |
μΩ·m |
| Elastic Modulus |
100 – 117 |
GPa |
| Relative Magnetic Permeability |
1.01 |
— |
| Mechanical Properties |
| Temper |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Hardness (HBW) |
| Annealed (O60) |
≥ 450 |
≥ 200 |
~80 |
| Work Hardened |
Up to 900 |
Up to 490 |
— |
| Standard Minimum |
≥ 345 |
≥ 125 – 140 |
— |
Application
- Marine seawater condenser/cooler tube sheets: seawater corrosion, biofouling; ballast water systems, offshore platform cooling devices;
- Power industry: power plant condenser tube sheets, cooling water;
- Power plant auxiliary heat exchangers, seawater desalination, high-pressure piping connections for seawater desalination units;
- Petrochemical industry: shell-and-tube heat exchangers, pressure vessels, corrosive media.
