Admiralty Brass Heat Exchanger Tubes & Condenser Tubes | ASTM B111 C44300

What Are Admiralty Brass Condenser Tubes?

Admiralty Brass Condenser Tubes are premium copper-zinc alloy tubes enhanced with small percentages of arsenic and tin, conforming to ASTM B111 / ASME SB111 standards. These tubes are manufactured under UNS C44300 (Werkstoff Nr. 2.0470) designation and are widely used in heat exchangers, condensers, surface condensers, and feed water heaters across power plants, refineries, and marine industries.

The tin content (0.8–1.2%) in Admiralty Brass C44300 acts as a dezincification inhibitor, while arsenic (0.02–0.06%) further stabilises the alloy against corrosion in polluted, slow-moving, or stagnant water. This makes Admiralty Brass Heat Exchanger Tubes the preferred choice for applications involving seawater cooling, industrial cooling water systems, and steam condensers.

As a leading supplier of admiralty brass heat exchanger tubes in India, Solitaire Overseas stocks the full C44300 range seamless, welded, U-bend, and finned ready for immediate dispatch, alongside custom sizes for evaporators, coolers, and feed water heaters built to order.

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Why Admiralty Brass Resists Dezincification
Key Features & Benefits of Admiralty Brass Heat Exchanger Tubes
Admiralty Brass U-Bend & Finned Heat Exchanger Tubes
Admiralty Brass Condenser Tubes Specifications
Admiralty Brass Condenser Tubes Equivalent Grades
Admiralty Brass C44300 Chemical Composition
Admiralty Brass Condenser Tubes Mechanical & Physical Properties
Applications of Admiralty Brass Heat Exchanger Tubes
Admiralty Brass Heat Exchanger Tubes Price in India
Why Choose Solitaire Overseas
Related Products & Learn More
Frequently Asked Questions

Why Admiralty Brass Resists Dezincification

Ordinary brass in contact with seawater or brackish water is prone to dezincification, a corrosion process where zinc leaches out of the alloy, leaving a weak, porous copper structure behind. The small tin addition in Admiralty Brass C44300 forms a protective film that interrupts this process, while the trace arsenic addition further inhibits it in polluted or stagnant water conditions. This combination is why admiralty brass has remained the standard tube material for marine condensers, refinery heat exchangers, and feed water heaters for close to a century it survives exactly the conditions (seawater, brackish water, sulphur-bearing process streams) that destroy untreated brass.

Key Features & Benefits of Admiralty Brass Heat Exchanger Tubes

Outstanding Corrosion Resistance: Resistant to polluted river water, seawater, and industrial cooling water. ideal for heat exchangers and condensers.
Dezincification Resistance: Tin and arsenic additives effectively prevent dezincification in aggressive environments.
High Thermal Conductivity: Excellent heat transfer efficiency, critical for power plant condensers and HVAC heat exchangers.
High Tensile Strength: Provides reliable mechanical performance at elevated temperatures (Tensile Strength: 310 MPa).
Tarnish & Scale Resistance: Maintains smooth tube bore over long service life, reducing fouling and maintenance costs.
Versatile Fabrication: Available as seamless (cold drawn/cold rolled), welded, U-bend, and oval forms. Custom lengths up to 20 metres available.
ASTM B111 / ASME SB111 Certified: Fully compliant with international standards for condenser and heat exchanger tubing.

Admiralty Brass U-Bend & Finned Heat Exchanger Tubes

Beyond straight lengths, Solitaire Overseas manufactures Admiralty Brass U-Bend Tubes and Admiralty Brass Finned Tubes for shell-and-tube heat exchangers where a compact footprint or enhanced surface area is required. U-bend tubes are cold-formed and stress-relieved to the bend radius specified in your tubesheet layout, while finned admiralty brass tubes add external fins for higher heat-transfer efficiency in air-cooled and refrigeration duty. Both are supplied to ASTM B111 / ASME SB111 with the same hydrostatic and eddy current testing as our straight-length tubes. See our Finned Tubes range for fin geometries and materials.

Admiralty Brass Condenser Tubes Specifications

Solitaire Overseas supplies the following copper nickel heat exchanger and condenser tube types from ready stock and against order:

Parameter	Details
Standard	ASTM B111 / ASME SB111
Dimensions	ASTM, ASME and API
Heat Exchanger OD Range	10 mm OD to 50.8 mm OD
Condenser Tubes OD Range	6 mm OD to 219.1 mm OD
Wall Thickness	0.70 mm to 12.7 mm
Outer Diameter	6.00 mm to 101.60 mm
HX Tube Wall Thickness	0.70 mm to 8.00 mm
Length	Up to 20 m (65.62 ft) \| Custom lengths available
Other Standards	JIS 3463, JIS 3459, DIN 2462, DIN 17458, DIN 17456, GOST 9941
Manufacturing Technique	Seamless (Cold Drawn / Cold Rolling), Welded

Admiralty Brass Condenser Tubes Equivalent Grades

Standard	UNS	Werkstoff Nr.
Admiralty Brass	C44300	2.0470 / 1785

Admiralty Brass C44300 Chemical Composition

Element	Symbol	Admiralty Brass C44300 (%)
Copper	Cu	70.0 – 73.0
Arsenic	As	0.02 – 0.06
Iron	Fe	0.06 max
Lead	Pb	0.07 max
Tin	Sn	0.8 – 1.2
Zinc	Zn	Remainder

Admiralty Brass Condenser Tubes Mechanical & Physical Properties

Property	Value
Density	8.53 g/cm³
Melting Point	899 – 938 °C
Tensile Strength	310 MPa
Yield Strength (0.2% Offset)	105 MPa
Elongation	30%
Thermal Conductivity	111 W/m·K
Elastic Modulus	110 GPa

Admiralty Brass Heat Exchanger Tubes Applications

Power Plants: Steam condensers, feed water heaters, cooling water systems
Oil & Gas Industry: Offshore platforms, refinery heat exchangers, process coolers
Chemical Industry: Process heat exchangers, evaporators, distillation column condensers
Marine & Shipbuilding: Seawater-cooled condensers, marine heat exchangers
HVAC & Refrigeration: Chillers, cooling towers, air conditioning heat exchangers
Food Processing Industry: Hygienic heat exchangers for food and beverage processing
Paper & Pulp Industry: Bleach plant heat exchangers, black liquor evaporators
Water Treatment & Desalination: Multi-stage flash evaporators, RO pre-heaters
Plumbing & Water Supply Systems: Hot and cold water distribution systems
General Fabrication: Boilers, heat exchangers, fluid handling equipment
Evaporators & Coolers: Refrigeration and process-cooling evaporator coils and cooler bundles specified in admiralty brass for its dezincification resistance.

Admiralty Brass Heat Exchanger Tubes Price in India

Admiralty brass heat exchanger tube price depends on outer diameter and wall thickness, temper (annealed O61, or hard-drawn H/QH), fabrication form (straight seamless, welded, U-bend, or finned), order quantity, and inspection level (standard MTC 3.1 vs third-party 3.2). As a direct manufacturer, Solitaire Overseas quotes ex-works and CIF pricing without intermediary margins — share your specification with our sales team for a mill-direct quote.

Why Choose Solitaire Overseas for Admiralty Brass Heat Exchanger Tubes?

Solitaire Overseas is a leading Admiralty Brass Heat Exchanger Tubes manufacturer in India, offering:

Mill Test Certificates (MTC) as per EN 10204 3.1 / 3.2
100% Hydrostatic Testing and Eddy Current Testing on all tubes
Chemical Analysis, PMI Test, IGC Test, Hardness Test and Pitting Resistance Test
Custom sizes and lengths up to 20 metres — cut to requirement
Safe export packaging in wooden cases, crates, and cartons to prevent transit damage
Trusted by 100+ industrial clients worldwide across 50+ countries
Fast turnaround — quote within 24 hours, ex-stock availability for standard sizes

Our admiralty brass tubes ship to power, marine, and desalination projects across the Middle East, Southeast Asia, Europe, Africa, and the Americas from our Mumbai facility — see the full list of countries we supply on our About Us page.

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Frequently Asked Questions — Admiralty Brass Condenser Tubes

What is the composition of Admiralty Brass C44300?

Admiralty Brass C44300 contains 70–73% Copper (Cu), 26–28.7% Zinc (Zn), 0.8–1.2% Tin (Sn), and 0.02–0.06% Arsenic (As). The tin and arsenic additions are critical for dezincification resistance in corrosive environments.

What standard governs Admiralty Brass Heat Exchanger Tubes?

Admiralty Brass Heat Exchanger Tubes are governed by ASTM B111 / ASME SB111 — the standard specification for copper and copper alloy seamless condenser tubes and ferrule stock. DIN 1785, JIS H 3300, and EN 12451 are equivalent international standards.

What is the difference between seamless and welded Admiralty Brass tubes?

Seamless Admiralty Brass Tubes (cold drawn/rolled) offer superior pressure resistance and are preferred for high-pressure heat exchangers. Welded Admiralty Brass Tubes are more cost-effective for lower-pressure applications such as surface condensers and HVAC systems.

What sizes are available for Admiralty Brass Condenser Tubes?

We supply Admiralty Brass Condenser Tubes from 6 mm OD to 219.1 mm OD, with wall thickness 0.7 mm to 12.7 mm, in lengths up to 20 metres. Custom dimensions are available on request.

In which industries are Admiralty Brass Heat Exchanger Tubes used?

Admiralty Brass C44300 Heat Exchanger Tubes are widely used in power plants, oil & gas, chemical processing, marine, HVAC, food processing, desalination, and paper & pulp industries.

Do you supply Admiralty Brass U Bend Tubes?

Yes. Solitaire Overseas manufactures Admiralty Brass U Bend Tubes and Condenser U Shaped Tubes in accordance with ASTM B111 / ASME SB111 for shell and tube heat exchangers and surface condensers.

What testing is performed on Admiralty Brass Condenser Tubes?

All Admiralty Brass Condenser Tubes undergo Hydrostatic Test, Eddy Current Test, Chemical Analysis, Mechanical Test (Tensile/Hardness), PMI Test, IGC Test, and Pitting Resistance Test, with full third-party inspection available.

Do you supply Admiralty Brass Tubes for evaporators and coolers?

NEW ADDITION

Yes. Admiralty Brass C44300 is a standard material choice for evaporator coils and cooler bundles in refrigeration and process-cooling systems, thanks to its dezincification resistance in circulating water. These are supplied to the same ASTM B111 / ASME SB111 specification and testing as our condenser and heat exchanger tubes.

What is the price of Admiralty Brass Heat Exchanger Tubes?

NEW ADDITION

Price depends on OD, wall thickness, temper, fabrication form (seamless, welded, U-bend, or finned), quantity, and inspection level. Contact our sales team with your specification for a mill-direct quote.

What is the difference between Admiralty Brass and Aluminium Brass tubes?

NEW ADDITION

Admiralty Brass (C44300) and Aluminium Brass (C68700) are both dezincification-resistant copper alloys, but they suit different water conditions and velocities. See our Admiralty Brass vs Aluminium Brass vs Copper Nickel Tubes guide for a full comparison against copper nickel as well.