UNS C44300 Admiralty Brass Tube PDF
What is ASTM B111 C44300 copper tubing?
C44300 Admiralty brass tubes are valued for their excellent corrosion resistance, especially in seawater, due to the addition of tin and arsenic. They also possess high thermal conductivity, good strength, and excellent workability, making them ideal for heat exchangers and marine applications. Key properties include high ductility, good machinability, and weldability via soldering and brazing.
Chemical Composition
| % | Elements | |||||
| Cu(1) | Pb | Sn(2) | Zn | Fe | As | |
| (1) Cu + Sum of Named Elements 99.6% min. (2) For tubular products, the minimum Sn content may be 0.9%. | ||||||
| Min (%) | 70.0 | 0.8 | 0.02 | |||
| Max (%) | 73.0 | 0.07 | 1.2 | Rem | 0.06 | 0.06 |
Mechanical Properties
| Form | Temper | Temper Code | Tensile Strength (ksi) | YS-0.5% Ext (ksi) | Elongation (%) | Rockwell F scale | Rockwell 30T scale | Torsion Modulus (ksi) | Section Size (in) |
| * Measured at room temperature, 68°F (20°C). | |||||||||
| Plate | As Hot Rolled | M20 | 48 Typ | 18 Typ | 65 Typ | 70 Typ | 5.8 Typ | 1 | |
| Strip | Light Anneal | O50 | 48 Typ | 14 Typ | 62 Typ | 0.04 | |||
| Soft Anneal | O60 | 45 Typ | 13 Typ | 69 Typ | 0.04 | ||||
| Tube | Nominal Grain Size 0.025 mm | OS025 | 53 Typ | 22 Typ | 65 Typ | 75 Typ | 37 Typ | ||
| Wire | Nominal Grain Size 0.015 mm | OS015 | 55 Typ | 60 Typ | 0.08 | ||||
Physical Properties
| Melting Point - Liquidus°F | 1720 |
| Melting Point - Solidus°F | 1650 |
| Densitylb/cu in. at 68°F | 0.308 |
| Specific Gravity | 8.53 |
| Electrical Conductivity% IACS at 68°F | 25 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 64 |
| Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) | 11.2 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 16000 |
| Modulus of Rigidityksi | 6000 |
Thermal Properties
| Treatment | Minimum* | Maximum* |
| Annealing | 800 | 1100 |
| Hot Treatment | 1200 | 1450 |
Admiralty Brass Tubes Application
Food Processing industry
Fabrication industry
Oil and Gas industry
Chemical industry
Plumbing
General Purpose Applications
Heating
Water supply Systems
Power Plant
Paper & Pulp industry

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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.





