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Not every pipe can handle seawater. Most standard alloys either corrode too quickly or lose mechanical integrity once continuous saline flow gets to work on them. That is where aluminium brass pipe earns its place.
Due to the combination of aluminum added to a copper-zinc base, this alloy possesses corrosion-resistant properties that standard brass does not have when applied in marine and hot fluid service. This makes aluminium brass suitable for applications such as aluminium brass heat exchanger pipes. This guide includes information on properties, grades, applications, and a practical buying guide intended for engineers and procurement personnel choosing the material in 2026.
Aluminium brass occupies a fairly definite position in the range of copper alloys. It is approximately 76 per cent copper, 22 per cent zinc, and 2 per cent aluminium ( with generally around 0.02- 0.06 per cent Arsenic ). This Arsenic is deliberate; it prevents Dezincification - the removal of the zinc component by a water supply to leave a fragile copper matrix.
Aluminium interacts with oxygen at the pipe surface to generate a self-healing thin aluminum oxide layer. That's why aluminium brass pipes and other aluminum-brass alloys are used in aggressive fluid environments rather than common brass. In seawater cooling circuits, heat exchanger bundles, and desalination plant tubing, these two mechanisms work together to produce pipes that hold up where unmodified brass would fail well within their expected service life.
For a detailed look at how related alloys handle marine service demands, the guide on aluminium pipes for marine applications is worth reading alongside this one.
What makes aluminium brass pipe reliable in industrial service is the combination of corrosion resistance, thermal performance, and mechanical strength working together. As one of the non-ferrous metal alloys for industrial applications, aluminium brass offers properties that engineers consistently rely on when specifying this alloy for seawater and process fluid applications.
The defining property of aluminium brass pipe. It resists impingement attack in high-velocity water flow and holds surface integrity in brackish and seawater environments. The arsenic addition makes dezincification resistance consistent throughout the material, not just at the surface.
Around 100 W/mK, aluminium brass has good heat transfer, much better than around 16 W/mK for stainless steel. With tube bundles inside a heat exchanger, this efficiency difference directly impacts system performance. It means that you can get away with fewer or shorter bundle lengths if you use the correct tube materials for heat transfer.
Tensile values range between 340 and 420 MPa, and yield values range between 140 and 170 MPa, which are suitable for pressurised fluid systems and are thin enough so that thermal efficiency is not sacrificed
These copper alloys are inherently Biocidal and therefore resist biological growth on their surfaces. For open sea-water cooling, this limits the fouling rate as the pipe deteriorates in comparison to stainless steel or titanium, hence resulting in less downtime and a reliable flow rate during its service life.
The grade determines the alloy composition, the applicable standard, and how the pipe performs under specific service conditions. The three grades below cover the majority of industrial, marine, and offshore requirements in the UAE market.
The standard grade for industrial and marine applications. Copper base, approximately 20% zinc, 2% aluminium, with arsenic for dezincification resistance. Supplied to BS 2871 Part 3 and ASTM B111 C68700, the two standards most commonly referenced in UAE heat exchanger, condenser, and marine piping projects.
A variant of CuZn20Al2 where the arsenic addition is confirmed in the mill test report. Most commercially available aluminium brass pipe is arsenical by default, but this should be explicitly verified for any water service application where dezincification resistance is a project requirement.
Modified grades with adjusted copper and aluminium ratios for applications requiring greater mechanical strength. Specified for structural tubing and fittings in offshore and heavy industrial environments. Not standard shelf stock with most UAE suppliers, so lead times should be confirmed early.
Overall, aluminium brass pipes are available in different grades to meet specific industrial, marine, and offshore requirements. Depending on the application, related aluminium brass products such as aluminium brass sheets and aluminium brass round bars can also be considered for different engineering and fabrication needs.
Aluminium brass pipes are stocked across a wide range of outside diameters and wall thicknesses to suit heat exchanger, condenser, and process piping requirements. The table below reflects standard dimensions typically available through UAE suppliers, with custom sizes available on request.
| OD Range | Wall Thickness | Standard Lengths | Grade | Standard |
|---|---|---|---|---|
| 6 mm – 25 mm | 0.5 – 2.5 mm | 1 m / 3 m / 6 m | CuZn20Al2 | BS 2871 / ASTM B111 |
| 25 mm – 76 mm | 1.0 – 4.0 mm | 1 m / 3 m / 6 m | CuZn20Al2 | BS 2871 / ASTM B111 |
| 76 mm – 152 mm | 2.0 – 6.0 mm | 1 m / 3 m | CuZn20Al2 | BS 2871 / ASTM B111 |
| 152 mm – 300 mm | 3.0 – 10.0 mm | 1 m / 3 m | CuZn20Al2 | ASTM B111 |
| Custom | Per spec | On request | All grades | As specified |
Custom dimensions are available against mill order lead times. Golden Harbour also supplies aluminium brass round bars and aluminium brass sheets for fabrication and machining requirements on the same project.
Aluminium brass pipes are widely used across industries where corrosion resistance, durability, and reliable thermal performance are essential. The following applications highlight the key industrial sectors where aluminium brass pipes are commonly used, including marine cooling, heat exchangers, desalination, oil and gas, and power generation.
The primary application globally. Seawater-cooled tubular heat exchangers in power stations, refineries, and industrial cooling systems specify aluminium brass tube bundles as standard. TEMA standards for seawater-cooled units list aluminium brass as a primary tube material for exactly this reason.
Ship engine cooling circuits and offshore platform seawater lift systems run continuous high-volume seawater flow. Standard brass cannot handle this without dezincification failure. Aluminium pipes for marine applications and aluminium brass can handle flow velocity and saline contact with better resistance to surface degradation, making them suitable for marine engine coolers and seawater cooling systems operating in demanding environments.
In the multi-stage flash (MSF) and multi-effect distillation (MED) units, the aluminium brass tubes (in the MSF and MED heat transfer stages) operate in a system with a need for resistance to corrosion and good surface cleanliness in a long campaign, because hot brine, steam, and scaling exist
Cooling water service lines in oil and gas facilities specify aluminium brass pipe for circuits carrying treated seawater or brackish cooling water. The non-sparking characteristic of copper alloys is relevant in hazardous area classifications. Certification to ASTM B111 or equivalent is a standard procurement condition on UAE O&G projects.
Coastal power stations using seawater for condenser cooling specify aluminium brass tube bundles for their main condensers and auxiliary heat exchangers. Tube conductivity feeds directly into station output performance, making the thermal efficiency advantage over stainless steel a commercially meaningful decision.
Aluminium brass competes with standard brass, stainless steel, and in some applications, titanium. Each alternative has a limitation in seawater and heat transfer service that aluminium brass does not share. The comparison below shows where each material stands across the properties that matter most.
| Property | Aluminium Brass | Standard Brass | Stainless Steel 316 |
|---|---|---|---|
| Seawater Resistance | Excellent | Moderate | Good |
| Dezincification Resistance | High | Low | N/A |
| Thermal Conductivity | High (~100 W/m·K) | High | Low (~16 W/m·K) |
| Biofouling Resistance | Good | Moderate | Low |
| Machinability | Good | Excellent | Moderate |
| Relative Cost | Moderate | Lower | Higher |
Standard brass fails in seawater. Stainless steel offers excellent corrosion resistance, but the low thermal conductivity of stainless steel dictates large tube bundles and thereby increased fabrication cost. Excellent corrosion resistance is the advantage for Titanium over Stainless Steel, but at a cost premium that very few standard applications justify.
Brass, on the other hand, has both corrosion resistance in seawater applications and the high thermal conductivity which are needed, while remaining at a cost less than Stainless Steel.
Aluminium brass pipe price UAE moves with several variables that procurement teams should understand before comparing supplier quotes. The drivers below explain most of the variation buyers see between one order and the next.
When choosing the best aluminium brass pipe, it is necessary to select the most suitable grade (alloy), size, and certification for the intended application. A proper brass alloy selection for engineering application should consider factors such as service environment, material grade, dimensions, and required documentation. The steps below list the factors to ascertain prior to ordering.
Determine what you intend to pass through the pipe, and under what environment, before considering any grades or sizes. Saline, brackish, or treated cooling waters, or processing streams may react differently to the alloy surface. Aluminium brass lends itself very well to both seawater and hot temperature cooling water duties.
For most UAE industrial and marine projects, CuZn20Al2 to ASTM B111 C68700 or BS 2871 Part 3 is the right specification. Confirm which standard applies before ordering. For water service, arsenical grade should be specified explicitly.
OD, wall thickness, and length should come from application requirements, not a stock list. Heat exchanger tube bundles are dimensioned by tube sheet pattern, baffle spacing, and thermal duty calculation. Over-specifying wall thickness in heat exchanger applications reduces thermal efficiency without a meaningful safety gain.
Regulated projects require material certificates, chemical analysis, and mechanical test results before material is accepted on site. Establish these with your supplier at the point of purchase. Material arriving without required documentation will be held at inspection on regulated UAE project sites.
An aluminium brass pipe supplier with local UAE stock removes the main procurement risk on time-sensitive projects. For aluminium pipe and aluminium brass requirements, Golden Harbour holds stocked inventory across the common sizes with full certification as standard.
Golden Harbour supplies aluminium brass pipes to heat exchanger fabricators, marine contractors, desalination operators, and oil and gas procurement teams across the UAE. Stock covers the standard OD and wall thickness combinations used in heat exchanger and condenser applications, with material certified to ASTM B111 and BS 2871 as required by project specification. Mill test reports, chemical analysis, and mechanical test documentation come with every supply as standard.
As a stocking aluminium brass pipe supplier UAE, the focus is on local availability, correct certification, and technical support on grade selection before the order is placed. Reach out with your specification and the team will confirm current stock and pricing directly.
Aluminium brass pipe works because of what its chemistry does in service. The aluminium oxide layer resists corrosive attack. The arsenic addition keeps dezincification in check. The thermal conductivity keeps heat exchanger systems running efficiently.
Combined, these features allow it to be a robust specification for seawater cooling, heat exchanger duties, and industrial fluid handling in the UAE's marine, desalination, oil & gas, and power generation industries. Specification into projects staying to schedule requires the use of accredited materials from a stocking UAE supplier.
