ASTM B111 C44300 / DIN CuZn28Sn1 Brass Seamless Tube Heat Exchanger Tube
ASTM B111 UNS C44300 Admiralty Brass Tube Seamless Heat Exchanger Tube
ASTM B111 C44300 seamless tubes are generally used in marine environments due to their excellent resistance to corrosion. C44300 is a type of admiralty brass, which is known for its high corrosion resistance in seawater. These tubes are often used in condensers, heat exchangers, and similar applications where resistance to corrosion is crucial.
ASTM B111 UNS C44300 Brass Tubes 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 | – |
ASTM B111 UNS C44300 Brass Tubes 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 |
Brass Seamless Tubes Equivalent Material
|
Grade |
USA |
U.K |
Germany |
Japan |
|
China BG |
ASTM B111 |
BS 2871 |
DIN 1785 |
JIS H3300 |
|
HAL77-2 |
C68700 |
CZ110 |
CuZn20Al2As |
C6870 |
|
HSn70-1 |
C44300 |
CZ111 |
CuZn28Sn1As |
C4430 |
|
H68A |
- |
CZ126 |
- |
- |
|
H65A / H63 |
C28000 / C27200 |
CZ108 |
CuZn26/CuZn37 |
C2800/C2700 |
| Material Designation | Corresponding Material Symbol | ||||
| GB/T8890 | ASTM B111 | BS2871 | JIS H3300 | DIN 1785 | |
| Copper-Nickel | BFe10-1-1 | C70600 Pipe | CN102 | C7060 | CuNi10Fe1Mn |
| BFe30-1-1 | C71500 Pipe | CN107 | C7150 | CuNi30Mn1Fe | |
| (BFe30-2-2) | C71640 | CN108 | C7164 | CuNi30Fe2Mn2 | |
| (BFe5-1.5-0.5) | C70400 | – | – | – | |
| B7 | – | – | – | – | |
| Aluminium Brass | HAL77-2 | C68700 Tube | CZ110 | C6870 | CuZn20Al2 |
| Admiralty Brass | HSn70-1 | C44300 Tube | CZ111 | C4430 | CuZn28Sn1 |
| Boric Brass | Hsn70-18 | – | – | – | – |
| HSn70-1 AB | – | – | – | – | |
| Arsenical Brass | H68A | – | CZ126 | – | – |
| Brass Tubes | H65/H63 | C28000/C27200 | CZ108 | C2800/C2700 | CuZn36/CuZn37 |
ASTM B111 / ASME SB111 C44300 brass tube 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 |
Applications
Brass tube are widely used in air-conditioning and refrigeration field service, heat exchange use, connecting tubes, distribution, fire protection, solar, natural gas, liquefied petroleum gas, vent piping.
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