ADMIRALTY BRASS C44300 O61 COPPER ALLOY STEEL TUBE B111 / SB111
ADMIRALTY BRASS C44300 O61 COPPER ALLOY STEEL TUBE B111 / SB111
Overview
C44300 is a type of copper alloy that is commonly referred to as "Admiralty Brass." It is known for its excellent corrosion resistance, high thermal conductivity, and good mechanical properties. C44300 tubes, specifically, are tubes made from this alloy. Here are some key points about C44300 tubes:
- Corrosion Resistance: C44300 tubes exhibit good resistance to corrosion, making them suitable for various applications where exposure to corrosive environments is expected. They can withstand seawater, brackish water, and other corrosive fluids.
- Thermal Conductivity: C44300 tubes have high thermal conductivity, making them ideal for applications that involve heat transfer. They are commonly used in heat exchangers, condensers, and other similar applications where efficient heat transfer is crucial.
- Mechanical Properties: C44300 tubes offer good mechanical properties, including moderate strength and ductility. This makes them easier to form, bend, and fabricate into desired shapes and sizes.
- Applications: C44300 tubes find applications in various industries, including marine, HVAC (heating, ventilation, and air conditioning), power generation, and chemical processing. Some specific applications include heat exchangers, condensers, evaporators, oil coolers, and refrigeration systems.
- Weldability: C44300 tubes can be easily welded using common methods such as brazing, soldering, and gas tungsten arc welding (GTAW/TIG). This allows for convenient installation and connection within the system.
- Availability: C44300 tubes are commercially available in different sizes and forms, including straight lengths, coils, and custom configurations. This provides flexibility in designing and constructing heat transfer systems.
When considering the use of C44300 tubes, it is important to consult with engineers, manufacturers, or industry professionals to determine the most suitable tube size, thickness, and design for your specific application requirements. They can provide guidance on material compatibility, installation techniques, and ensure optimal performance of the heat transfer system.
C44300 Chemical Composition
| Elements | Composition, % |
| Cu, incl. Ag | 70.0-73.0 |
| Sn | 0.9-1.2 |
| Al | – |
| Ni, incl. Co | |
| Pb | 0.06 max |
| Fe | 0.07 max |
| Zn | Balance |
| Mn | – |
| As | 0.02-0.06 |
| Sb | – |
| P | – |
| Cr | – |
| Other named elements | – |
C44300 Mechanical Properties
| Properties | Measurement |
| Yield strength | 105 MPa |
| Melting point | 899 ~ 938 °C |
| Tensile strength | 310 MPa |
| Thermal conductivity | 109 W/m-K @ 20.0 °C |
| Density | 8.53 g/cc |
| Heat capacity | 0.09 cal/g-°C @ 20ºC |
| CTE linear strength | 20.2 10-6/°C @ 20.0 – 300 °C |
C44300 Equivalent material
| Standard | BS 2871 PART3 | ASTM B111 | DIN 1785 | NFA 51102 | JIS H3300 | IS 1545 |
| Symbol | CZ 111 | C 44300 | CuZn28Sn1 | CuZn29Sn1 | C 4430 | CuZn29Sn1As |
| Cu | 70.0-73.0 | 70.0-73.0 | 70.0-72.5 | 70.0-73.0 | 70.0-73.0 | 70.0-73.0 |
| Sn | 1.0-1.5 | 0.9-1.2 | 0.9-1.3 | 0.9-1.2 | 0.9-1.2 | 1.0-1.5 |
| Pb | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 |
| Ni | – | – | 0.1 | – | – | – |
| Fe | 0.06 | 0.06 | 0.07 | 0.06 | 0.06 | 0.06 |
| Zn | REM’DER | REM’DER | REM’DER | REM’DER | REM’DER | REM’DER |
| As | 0.02-0.06 | 0.02-0.06 | 0.02-0.035 | 0.02-0.06 | 0.02-0.06 | 0.02-0.06 |
| P | – | – | 0.01 | – | – | – |
|
Total Impurities
Max. |
||||||
| 0.03 | – | 0.1 | 0.3 | – | 0.3 | |
| Condition | M | 61 | F36 | – | – | O |
| TA | – | F32 | – | O | TA | |
| O | – | – | – | – | D | |
|
Yield Strength
N/MM2 |
– | – | 140-220 | – | – | – |
| – | 105 | 100-170 | – | – | – | |
|
Tensile N/MM2
Minimum |
– | 310 | 360 | – | – | 375 Mpa Max. |
| – | – | 320 | – | 314Min. | 340 Mpa Min. | |
| – | – | – | – | – | 385 Mpa Min. | |
|
Elongation Percent
(%) Minimum |
– | – | 45Min. | – | -. | – |
| – | – | 55Min. | – | 30 Min. | – | |
| Hardness HV5 – | 150Min | – | – | – | – | 80 Max. |
| 85-105 | – | – | 80-120 | – | 80-105 | |
| 75Max. | – | – | – | – | 130 Min. | |
|
Grain Size mm
(75X) |
0.05Max. | 0.010-0.045 | – | 0.010-0.045 | 0.010-0.045 | 0.010-0.04 |
Advantage of copper alloy tubes:
- Simple alloying system with good weldability
- Excellent ductility and toughness
- Outstanding erosion corrosion performance
- Resistant to uniform and localised corrosion
- No effect of ambient seawater temperatures
- No effect of seawater chlorination
- Resistant to biofouling
- Resistant to stress-corrosion cracking
- Low maintenance costs
- A lot of design experience
Applications:
-
Heat Exchangers
-
Condensers
-
Evaporators
-
Oil Coolers
-
Marine Applications
-
HVAC Systems
-
Power Generation
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.