What is Brass C44300?
ASTM B111 C44300 copper water pipe is a versatile and widely used copper-zinc alloy. It is a highly corrosion-resistant brass commonly used in a variety of industrial and construction applications.
Composition of ASTM B111 C44300 copper water line
Brass C44300, also known as Admiralty brass or navy brass, is composed of 60% copper, 40% zinc, and tin. The tin content, ranging from 0.1% to 0.5%, enhances the alloy's corrosion resistance, especially in marine environments. The exact composition of Brass C44300 can vary by manufacturer but generally falls within the ranges mentioned above.
| Element | Composition (% by Weight) | Notes |
|---|---|---|
| Copper (Cu) | 70.0 - 73.0 | Remainder (including specified additives) |
| Zinc (Zn) | Remainder | Primary alloying element |
| Tin (Sn) | 0.8 - 1.2 | |
| Arsenic (As) | 0.02 - 0.06 | |
| Lead (Pb) | 0.07 max | |
| Iron (Fe) | 0.06 max | |
| Other Impurities | 0.15 max each | |
| Total Impurities | 0.50 max | Sum of all impurities |
C44300 Physical Properties
Brass C44300 exhibits excellent physical and mechanical properties, including high strength, wear resistance, and machinability. Its density is approximately 8.53 g/cm³ and its melting point is approximately 890°C.
| Property | Value | Unit | Condition / Note |
|---|---|---|---|
| Density | 0.307 | lb/in³ | |
| 8.50 | g/cm³ | ||
| Melting Range (Liquidus) | 1650 | °F | Approximate |
| 899 | °C | Approximate | |
| Melting Range (Solidus) | 1610 | °F | Approximate |
| 876 | °C | Approximate | |
| Thermal Conductivity | 69 | Btu/(ft·h·°F) | @68°F (20°C) |
| 119 | W/(m·K) | @68°F (20°C) | |
| Electrical Conductivity | 26 | % IACS | @68°F (20°C) |
| Coefficient of Thermal Expansion | 11.2 | 10⁻⁶/°F | 68-572°F (20-300°C) |
| 20.2 | 10⁻⁶/°C | 68-572°F (20-300°C) | |
| Modulus of Elasticity (Tension) | 16,000 | ksi | |
| 110 | GPa | ||
| Specific Heat Capacity | 0.09 | Btu/(lb·°F) | @68°F (20°C) |
| 377 | J/(kg·K) | @68°F (20°C) |
C44300 Mechanical Properties
Brass C44300 has a tensile strength of 300 MPa and a yield strength of 70 MPa. It also has a low coefficient of thermal expansion and high thermal conductivity.
| Temper Designation | Condition | Tensile Strength min. | Yield Strength (0.5% EUL) min. | Elongation in 2 in. min. (%) | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | |||
| O61 | Annealed | 40 | 275 | 15 | 105 | 45 |
| H55 | Light Drawn | 45 | 310 | 25 | 170 | 30 |
| H58 | Drawn | 50 | 345 | 35 | 240 | 20 |
| H80 | Hard Drawn | 60 | 415 | 50 | 345 | 8 |
C44300 Equivalents
ASME SB111
ASME SB171
ASME SB359
ASME SB395
ASME SB543
ASTM B111
ASTM B135
ASTM B171
ASTM B359
ASTM B395
ASTM B432
ASTM B543
C44300 Applications
Brass C44300 is commonly used in marine applications due to its excellent corrosion resistance. Due to its high thermal conductivity and machinability, it is also used in heat exchangers, condensers, valves, and fittings. Other applications include electronic components, architectural ornamentation, and decorative hardware.
ASTM B111 C44300 Refrigeration Copper Tubing Corrosion Resistance
One of the main advantages of brass C44300 is its excellent corrosion resistance, especially in marine environments. The addition of tin to the alloy helps prevent dezincification, a type of corrosion that can occur in brass with high zinc content. Therefore, brass C44300 is often used in seawater applications such as propellers, pumps, and marine hardware.
C44300 Heat Treatment
Brass C44300 can be annealed to improve workability and reduce internal stresses. For best results, it should be heated to a temperature range of 400-650°C for 30 minutes to 1 hour, followed by slow cooling in air. However, exposing brass C44300 to high temperatures for extended periods is not recommended, as this can cause brittleness and reduce its overall performance.
C44300 Machining
Brass C44300 exhibits good machinability and can be easily turned, drilled, milled, and tapped. Carbide cutting tools are recommended for machining this alloy. Proper machining techniques and lubricants must be used to prevent overheating and tool wear.
Welding C44300
Brass C44300 can be welded using a variety of methods, including gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), and oxyacetylene welding. Preventing porosity and cracking during welding is essential, such as using appropriate filler metal and preheating the workpiece.
Brass C44300 is a valuable brass alloy with many advantages, including excellent corrosion resistance, high strength, and machinability. It is widely used in marine, industrial, and architectural applications. Its unique composition of copper, zinc, and tin imparts ideal physical and mechanical properties, making it an attractive choice for a variety of applications.
why choose us
Professional copper pipe supplier
As a professional enterprise dedicated to global copper product trade since 2008, GNEE Metal Group deeply recognizes the quality and responsibility embodied in the ASTM B111 standard. This standard not only specifies chemical composition and mechanical properties but also represents a comprehensive quality commitment spanning manufacturing processes to testing and verification. GNEE solemnly assures global customers that every ASTM B111-standard condenser tube and copper alloy tubing we supply will strictly adhere to its requirements for seamless manufacturing, annealing treatment, eddy current testing, and various mechanical performance tests.
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Packaging and shipping
GNEE offers professional packaging for exported copper pipes. First, we apply anti-rust oil and plastic film to prevent oxidation. Then, we securely strap with steel straps and add corner protectors. Finally, we place the pipes on wooden pallets and reinforce them with iron or wooden boxes, ensuring they are moisture-proof and impact-resistant during ocean transport, while facilitating easy loading and unloading. All packaging meets export standards.
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