Aluminium Anodes for Marine & Offshore Cathodic Protection
RELI SLEEVE Aluminium Anodes are sacrificial anodes designed for cathodic protection of submerged and seawater-exposed steel structures. Aluminium alloy anodes are widely considered for marine, offshore, pipeline and other cathodic protection applications where the approved CP design calls for an aluminium-based sacrificial anode system.
ALUMINIUM SACRIFICIAL ANODES
Aluminium Anodes Product Introduction
Aluminium anodes are sacrificial anodes used in galvanic cathodic protection systems to protect submerged steel structures against corrosion. The aluminium alloy acts as the sacrificial material and supplies protective current to the connected steel structure.
Aluminium alloy sacrificial anodes are particularly relevant to marine and offshore applications where cathodic protection is required in seawater. Depending on the project design, aluminium anodes can be manufactured in different shapes, dimensions and installation configurations.
RELI SLEEVE manufactures Aluminium Anodes according to applicable specifications including Galvalum III equivalent, DNV, ISO, Alanode standards and approved client specifications.
Types of Sacrificial Anodes
RELI SLEEVE offers different sacrificial anode configurations for specific structures and cathodic protection requirements. Aluminium alloy can be selected as the anode material where it is suitable for the approved CP design.
Jacket Anodes
Aluminium sacrificial anode systems for offshore jackets, platforms and submerged steel structures.
View Jacket Anodes →Pipeline Bracelet Anodes
Bracelet-type sacrificial anodes for submerged pipeline cathodic protection applications.
View Pipeline Bracelet Anodes →Hull Anodes
Sacrificial anodes for ship hulls, vessels and marine steel structures.
View Hull Anodes →Offshore Wind Farm Anodes
Cathodic protection anodes for offshore wind turbine foundations and substations.
View Wind Farm Anodes →Miscellaneous Application Anodes
Sacrificial anodes for specialized marine structures and different installation requirements.
View Miscellaneous Anodes →Custom Application Anodes
Custom-shaped aluminium anodes developed according to project-specific requirements.
View Custom Anodes →Key Features of Aluminium Anodes
Sacrificial Protection
Aluminium alloy acts as the sacrificial material and provides galvanic cathodic protection to connected steel structures.
Marine Applications
Aluminium anode systems can be used for suitable seawater and marine cathodic protection applications.
Offshore Applications
Aluminium anodes are suitable for selected offshore structures and submerged steel assets according to CP design.
Multiple Configurations
Anodes can be manufactured in application-specific configurations according to approved drawings.
Custom Dimensions
Dimensions can be manufactured according to engineering requirements and cathodic protection calculations.
Standard Options
Aluminium anodes can be manufactured according to recognized specifications and client requirements.
Aluminium Anodes Technical Specification
| Product Type | Aluminium Sacrificial Anode |
|---|---|
| Protection Method | Galvanic / Sacrificial Cathodic Protection |
| Primary Material | Aluminium Alloy |
| Primary Application | Marine, Offshore and Submerged Steel Structures |
| Operating Environment | Seawater / Marine Environment |
| Configuration | Application and Project Specific |
| Dimensions | As per Approved Engineering Drawing and CP Design |
| Mounting Arrangement | As per Application and Approved Installation Design |
| Electrical Continuity | As Required by CP Design |
| Design Life | As per Cathodic Protection Design |
| Manufacturing Standard | Galvalum III Equivalent, DNV, ISO, Alanode or Client Specification |
Aluminium Anode Grades & Standards
RELI SLEEVE Aluminium Anodes can be manufactured according to Galvalum III equivalent, DNV, ISO, Alanode standards or approved customer specifications.
Aluminium Anode Chemical Composition
RELI SLEEVE Aluminium Anodes can be manufactured according to the required aluminium alloy specification. The following chemical composition values are the supplied reference specifications.
| Element | Galvalum III (Eqv.) | DNV & ISO | Alanode |
|---|---|---|---|
| Zn | 2.0–6.5 | 2.5–5.75 | 0.50–5.00 |
| In | 0.01–0.02 | 0.016–0.04 | 0.005–0.05 |
| Si | 0.08–0.20 | 0.12 Max. | 0.10 Max. |
| Fe | 0.12 Max. | 0.09 Max. | 0.13 Max. |
| Cu | 0.006 Max. | 0.003 Max. | 0.01 Max. |
| Cd | 0.002 Max. | — | — |
| Others (Each) | 0.02 Max. | 0.02 Max. | 0.02 Max. |
| Others (Total) | 0.06 Max. | — | — |
| Al | Remainder | Remainder | Remainder |
Final chemical composition should be confirmed against the applicable alloy specification, approved project documentation and customer requirements before production.
Aluminium Anode Electrochemical Performance
The following reference electrochemical characteristics apply to aluminium anodes operating in seawater at 23°C.
| Operating Environment | Seawater at 23°C |
|---|---|
| Open Circuit Potential | More negative than -1.1 V w.r.t. Ag/AgCl |
| Closed Circuit Potential | More negative than -1.05 V w.r.t. Ag/AgCl Reference Electrode |
| Anode Capacity | 2550–2750 A.hr/Kg |
Aluminium Anode Applications
- Offshore Jacket Structures
- Offshore Platforms
- Marine Structures
- Ship Hulls & Vessels
- Submerged Steel Structures
- Pipeline Cathodic Protection
- Offshore Wind Farm Foundations
- Offshore Substations
- Seawater Applications
- Specialized CP Systems
Aluminium Anodes for Different Applications
Jacket Anodes
Aluminium alloy anode systems for offshore jacket structures and submerged steel components.
Explore Jacket Anodes →Pipeline Bracelet Anodes
Bracelet anode configurations for submerged pipeline cathodic protection requirements.
Explore Pipeline Anodes →Hull Anodes
Aluminium sacrificial anodes for selected ship hull and marine protection systems.
Explore Hull Anodes →Offshore Wind Farm Anodes
Aluminium anode systems for offshore wind foundation and substation protection.
Explore Wind Farm Anodes →Miscellaneous Application Anodes
Aluminium sacrificial anodes for specialized marine and steel structure applications.
Explore Miscellaneous Anodes →Custom Application Anodes
Custom aluminium anode shapes and configurations developed according to project requirements.
Explore Custom Anodes →Advantages of Aluminium Sacrificial Anodes
High Anode Capacity
The supplied aluminium anode reference data provides an anode capacity range of 2550–2750 A.hr/Kg under the stated test conditions.
Marine Suitability
Aluminium sacrificial anodes are widely considered for suitable seawater cathodic protection applications.
Application Flexibility
Aluminium anodes can be manufactured in different configurations according to structure and installation requirements.
Project-Specific Manufacturing
Dimensions, configuration and material requirements can be manufactured according to approved project documentation.
About RELI SLEEVE
Reliable Aluminium Anode Manufacturing
RELI SLEEVE is part of the Reliable Group, an industrial organization serving Oil & Gas, Petrochemical, Power, Water, Infrastructure and Process Industries.
With manufacturing and technical capabilities in corrosion protection solutions, RELI SLEEVE supports cathodic protection requirements through sacrificial anode products and specialized configurations.
Aluminium Anodes can be manufactured according to Galvalum III equivalent, DNV, ISO, Alanode standards or approved client specifications, subject to the project requirements and applicable design.
Frequently Asked Questions About Aluminium Anodes
What are Aluminium Anodes? +
Aluminium anodes are sacrificial anodes used in galvanic cathodic protection systems. The aluminium alloy acts as the sacrificial material and supplies protective current to connected steel structures.
Where are Aluminium Anodes used? +
Aluminium anodes are used for suitable marine, offshore and submerged steel structures, including ship hulls, offshore structures, pipelines and offshore wind applications.
Which standards are available for Aluminium Anodes? +
RELI SLEEVE can manufacture aluminium anodes according to Galvalum III equivalent, DNV, ISO, Alanode and approved client specifications.
Can Aluminium Anodes be custom manufactured? +
Yes. Aluminium anodes can be manufactured in application-specific configurations and dimensions according to approved drawings, installation requirements and cathodic protection design.
Can Aluminium Anodes be used for ship hulls? +
Aluminium anodes can be used for suitable ship hull and marine cathodic protection systems, subject to the applicable CP design and operating conditions.
What is the capacity of Aluminium Anodes? +
The supplied reference electrochemical data for aluminium anodes operating in seawater at 23°C gives an anode capacity of 2550–2750 A.hr/Kg.
Can Aluminium Anodes be supplied for offshore projects? +
Aluminium sacrificial anodes can be considered for suitable offshore cathodic protection applications according to the approved project design and applicable specifications.
Need Aluminium Anodes for Your Project?
Share your application, drawing, dimensions or cathodic protection requirements with RELI SLEEVE for a project-specific solution.