B43 Seamless Red Brass Pipe
B43 Seamless Red Brass Pipe is a type of red brass pipe made primarily of copper (around 85%), with smaller amounts of zinc and tin. It is known for its excellent corrosion resistance, high durability, and smooth interior, which makes it ideal for fluid handling and plumbing applications.
Chemical Composition
Element |
Composition (%) |
Copper |
84.0 - 86.0 |
Lead |
0.05 max |
Iron |
0.05 max |
Zinc |
Rem. |
The pipe is manufactured from Copper Alloy UNS No. C23000, which consists of approximately 85% copper, with strict limits on lead and iron content, and the remainder being zinc
Physical Properties
Property |
Value |
Density |
8.75 g/cm³ |
Melting Point |
1010°C (1850°F) |
Thermal Conductivity |
159 W/m·K |
Electrical Conductivity |
28% IACS |
Coefficient of Thermal Expansion |
18.7 µm/m·K (20-300°C) |
Modulus of Elasticity |
110 GPa |
Poisson's Ratio |
0.33 |
Mechanical Properties
Property |
Annealed (O61) |
Drawn General Purpose (H58) |
Tensile Strength (min) |
40,000 psi (275 MPa) |
50,000 psi (345 MPa) |
Yield Strength (min) |
12,000 psi (83 MPa) |
30,000 psi (205 MPa) |
Elongation in 2 in. (50.8 mm) (min) |
35% |
15% |
Rockwell Hardness (approx.) |
B40 |
B65 |
Thermal Properties
Property |
Value |
Melting Point (Liquidus) |
1027°C (1880°F) |
Melting Point (Solidus) |
988°C (1810°F) |
Thermal Conductivity |
159 W/m·K (92 Btu/ft·hr·°F) |
Coefficient of Thermal Expansion |
18.7 µm/m·K (10.4 × 10⁻⁶ in/in/°F) |
Specific Heat Capacity |
377 J/kg·K (0.09 Btu/lb/°F) |
Fabrication Properties
Property |
Characteristic |
Machinability |
Good |
Formability |
Excellent (annealed), Good (drawn) |
Weldability |
Good |
Brazeability |
Excellent |
Solderability |
Excellent |
Annealing Temperature |
425-600°C (800-1100°F) |
Hot Working Temperature |
650-750°C (1200-1400°F) |
Common Applications
Common applications for B43 Seamless Red Brass Pipe include:
- Plumbing Systems: Used in residential and commercial water supply lines due to its corrosion resistance.
- Water Distribution: Employed in potable water systems and distribution lines for drinking water.
- Wastewater Systems: Suitable for carrying wastewater and drainage due to its anti-corrosive properties.
- Heat Exchangers: Used in heat exchanger tubes because of its excellent thermal conductivity.
- Industrial Piping: Employed in general-purpose industrial piping systems handling gases or liquids.
- Marine Applications: Used in seawater piping and other marine hardware exposed to corrosive environments.
- Air Conditioning and Refrigeration: Suitable for components in HVAC systems due to its thermal properties.
- Fire Sprinkler Systems: Employed in fire suppression systems for its durability and reliability under pressure.
- Instrumentation and Gauges: Used in instrumentation requiring corrosion-resistant and pressure-resistant materials.
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