Sacrificial anodes

Zinc, aluminum and magnesium
sacrificial anodes

Tecnoseal sacrificial anodes combat electrolytic corrosion, protecting metals immersed in seawater, brackish water or fresh water. Certified materials and advanced ‘Made in Italy’ technology guarantee maximum durability.

What are sacrificial anodes

Tecnoseal is the world’s leading manufacturer of sacrificial anodes for cathodic protection against galvanic currents in the recreational boating sector and for naval, offshore and industrial applications.

What do they protect against

Their use is necessary to prevent corrosion of metals immersed in an electrolytic solution.

Seawater, brackish water and fresh water are the three main natural electrolytes with which Tecnoseal works in cathodic protection.

Any metal immersed in an electrolyte undergoes a natural process that, over time, transforms it into one of its oxides (iron will become iron oxide), thereby compromising its electrochemical and mechanical properties.

Cathodic protection aims to design sacrificial elements (anodes) which, by their very nature, when applied in direct contact with an immersed metal, form a galvanic couple governed by an oxidation-reduction reaction, thereby slowing down the rate of corrosion of the metal over time, whilst the sacrificial element (anode) is rapidly consumed.

How do we make them

With over 30 years’ experience, we manufacture zinc, aluminium and magnesium anodes at our foundry in Grosseto (Tuscany), and are currently the world’s leading manufacturer of the widest range of anodes: 3,000 standard products and over 2,000 items manufactured to specific customer requirements.

The official Tecnoseal catalogue is the most comprehensive in the world in terms of products, making it an essential reference for shipyards, retailers and anyone involved in cathodic protection.

Tecnoseal Foundry offers all the products in its catalogue in the three anodic alloys: zinc, aluminum and magnesium.

Tecnoseal Foundry guarantees that all products comply with the alloy specifications.

By carrying out spectrometric measurements at specific intervals, we ensure that the product complies with the characteristics of the anodic alloy.

Zinc anodic alloy: US Mil Spec. A-18001K

Bi -TEC® Zinc anodic alloy: DNV RP B401

Aluminum anodic alloy: US Mil Spec. A24779 SH

Magnesium anodic alloy: US Mil Spec. A21412 SH

Why choose Tecnoseal

Choosing Tecnoseal will give you the benefit of a reliable partner that consistently supplies products in full compliance with alloy specifications.

The extensive range of products, all ‘made in Italy’, combined with an efficient sales and logistics department, makes Tecnoseal the ideal partner for cathodic protection.

In addition to the products in its catalogue, Tecnoseal is able to provide all kinds of bespoke solutions in the field of cathodic protection.

The technical department and workshop always pay particular attention to commercial enquiries that require the development of highly bespoke solutions.

Tecnoseal is the only manufacturer in the world whose zinc-based anodic alloy complies with the DNV RP B401 standard and is fully environmentally sustainable as it is cadmium (Cd)-free.

The new alloy (Bi-TEC®) is a product designed and patented by Tecnoseal.

Compliance with the DNV RP B401 standard has been validated at the laboratories of the ‘Giulio Natta’ Department of Chemistry, Materials and Chemical Engineering at the Politecnico di Milano.

All anodes in the catalogue can be manufactured to the new alloy specification.

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Production of Sacrificial Anodes

The design and manufacture of sacrificial anodes atake place entirely at TECNOSEAL’s factories in Italy.

Raw materials and components are sourced exclusively from certified manufacturers, and every stage, from the delivery of materials to the dispatch of finished products, is carefully managed and monitored directly by a dedicated in-house department.

Main departments:

• Design and engineering
• Component moulding
• Warehousing, packaging and shipping
• Mould construction for gravity casting or die-casting
• Product Finishing Department
• Laboratory testing with mass spectrometer

Every TECNOSEAL anode is designed, engineered and manufactured in accordance with the chemical composition specified by the relevant US military standard.

The Tecnoseal factory also develops and manufactures cathodic protection systems tailored to specific applications.

Assessments are always carried out taking into account individual requirements and the nature of the problem.