UNS C44300 Admiralty Brass Tube PDF
What is ASTM B111 C44300 copper tubing?
ASTM B111 C44300 naval brass tubing has long been used in heat exchangers and condensers due to its excellent corrosion resistance and superior heat transfer properties. Suppressed 44300 naval brass is used in freshwater, brackish water, and seawater applications, as well as in oil and gas systems, because of its combined advantages of corrosion resistance, high heat transfer efficiency, and lower material costs.
Typical Applications
Marine Engineering: Seawater condensers, ship propellers, evaporators, and heat exchange piping.
Energy Equipment: High-pressure heat exchangers, condensers, and conduits for corrosive liquids in thermal power plants.
Industrial Components: Valves, pump bodies, deep-drawn parts (such as rivets and nuts), and electronic components.
ASTM B111 / ASME SB 111 C44300 Admiralty Brass Chemical Composition
| Grade | As | Fe | Tin | Cu | Pb | Zn |
| C44300 | 0.02-0.06 | 0.06 | 0.9-1.2 | 70.0-73.0 | 0.07 | remainder |
Physical Properties
| Properties * | English | Metric |
|---|---|---|
| Melting Point | 1650 ~ 1720 °F | 899 ~ 938 °C |
| Tensile Strength, min. | 45 ksi | 310 MPa |
| Density | 0.308 lb/in³ | 8.53 g/cc |
| Yield Strength, min. | 15 ksi | 105 MPa |
| Specific Heat Capacity | 0.09 BTU/lb-°F @ 70ºF | 0.09 cal/g-°C @ 20ºC |
| CTE, linear | 11.2 10-6/°F @ 70.0 – 570 °F | 20.2 10-6/°C @ 20.0 – 300 °C |
| Thermal Conductivity | 64 BTU/ft2/ft/h/°F @ 70.0 °F | 109 W/m-K @ 20.0 °C |
Mechanical Properties
| Standard | ASTM B 111 | BS 2871 PART3 | DIN 1785 | JIS H3300 | NFA 51 102 | IS 1545 |
|---|---|---|---|---|---|---|
| Symbol | C 44300 | CZ 111 | CuZn28Sn1 | C 4430 | CuZn29Sn1 | CuZn29Sn1As |
| Sn | 0.9-1.2 | 1.0-1.5 | 0.9-1.3 | 0.9-1.2 | 0.9-1.2 | 1.0-1.5 |
| 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 |
| Pb | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 |
| 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 |
| Fe | 0.06 | 0.06 | 0.07 | 0.06 | 0.06 | 0.06 |
| Ni | – | – | 0.1 | – | – | – |
| Zn | REM'DER | REM'DER | REM'DER | REM'DER | REM'DER | REM'DER |
| P | – | – | 0.01 | – | – | – |
| Total Impurities Max. | – | |||||
| – | 0.03 | 0.1 | – | 0.3 | 0.3 | |
| Elng'Tion Percent (%) Minimum | – | – | 45Min. | -. | – | – |
| – | – | 55Min. | 30 Min. | – | – | |
| Condition | 61 | M | F36 | – | – | O |
| – | TA | F32 | O | – | TA | |
| – | O | – | – | – | D | |
| Tensile N/MM2 Minimum | 310 | – | 360 | – | – | 375 Mpa Max. |
| – | – | 320 | 314Min. | – | 340 Mpa Min. | |
| – | – | – | – | – | 385 Mpa Min. | |
| Yield Strength N/MM2 | – | – | 140-220 | – | – | – |
| 105 | – | 100-170 | – | – | – | |
| Grain Size mm (75X) | 0.010-0.045 | 0.05Max. | – | 0.010-0.045 | 0.010-0.045 | 0.010-0.04 |
| Hardness HV5 – | – | 150Min | – | – | – | 80 Max. |
| – | 85-105 | – | – | 80-120 | 80-105 | |
| – | 75Max. | – | – | – | 130 Min. |
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Founded in 2008, we are a leading professional exporter specializing in a comprehensive range of high-quality copper products for global markets. Our core product portfolio encompasses various forms and specifications to meet diverse industrial needs.
Copper Tubes & Pipes:
We supply both Copper Seamless Tubes (ASTM B68, B75) and Copper Welded Tubes, including Pure Copper Tubes (C11000, C12200), Brass Tubes (C23000, C26000, C28000), and specialized Admiralty Brass Tubes (C44300) for superior corrosion resistance in heat exchanger applications. Our offerings comply with key ASTM standards such as ASTM B88 for seamless water tube and ASTM B111 for condenser tubes.
Copper Sheets & Plates:
Our range covers from thin-gauge Thin Copper Sheet (ASTM B152) to heavy-duty Thick Copper Plate, available in alloys like Pure Copper (C11000), Brass Sheet (C26000), Phosphor Bronze Sheet (C51000, C52100), and corrosion-resistant Admiralty Brass Sheet/Plate (C44300).
Copper Rods & Bars:
We provide Copper Round Rod, Copper Square Bar, Copper Hexagon Bar, and Copper Flat Bar in various tempers. Products include Free-Cutting Brass Rod (C36000 per ASTM B16), Oxygen-Free Copper Rod (C10100/C10200, ASTM B187), Beryllium Copper Bar (C17200, ASTM B196), and Admiralty Brass Rod (C44300).
Copper Wires & Strips:
Our Copper Wire products include Bare Copper Wire (ASTM B1/B2/B3), Enamelled Copper Wire, and Brass Wire. We also supply precision Copper Strip (C11000, C26800), Brass Strip, and Admiralty Brass Strip (C44300) for electrical, marine, and fabrication applications.
