Aluminum Marine Structure Anodes
Aluminium anodes have a lower consumption rate than magnesium or zinc anodes and are used for the protection of structures primarily in seawater and brackish water environments.
| Element | GALVALUM III | DNV – RP – B401 – 2011 | GS EP COR 201 |
| Al – Zn – In – Si | Al – Zn – In | Al – Zn – In | |
| Zinc (Zn) | 2.0 – 6.0% | 2.5 – 5.75% | 4.75 – 5.75% |
| Indium (In) | 0.01-0.02% | 0.015 – 0.04% | 0.015 – 0.02% |
| Cadmium (Cd) | — | 0.002% Max. | 0.002% Max. |
| Silicon (Si) | 0.08-0.20% | 0.08-0.20% | 0.06 – 0.12% |
| Iron (Fe) | 0.13% | 0.09% Max. | 0.12% Max. |
| Copper (Cu) | 0.006% Max. | 0.003% Max. | 0.003% Max. |
| Others Total | 0.10% Max. | 0.10% Max. | 0.10% Max. |
| Aluminum | Remainder | Remainder | Remainder |
| Operating Potential (Negative Volts) | Current Capacity | Consumption Rate | Current Efficiency | Solubility |
| -1.05 – 1.10 | 1135A.h/lbs (2500A.h/kg) | 7.6lbs/amp.yr | 90% Min. | Solute Uniformly |
Open/close circuit potential is with respect to a Saturated Calomel Reference Electrode.
| Weight | Size | Steel Core Insert | ||||||
| Anode | Core | La × (Wt + Wb) × H | Dia. | Lc | Pipe Specification | |||
| 289lbs (131kg) | 35.5lbs (16kg) | 905″ × (87″ + 95″) × 91″ (2300 × (220 + 240) × 230cm) | 35″ (89cm) | 1102″ (2800cm) | Thickness 0.2″ (5mm) SCH40 | |||
| 181.5lbs (82kg) | 18.5lbs (8.5kg) | 630″ × (78″ + 83″) × 87″ 1600 × (200 + 210) × 220cm | 23.5″ (60cm) | 787″ (2000cm) | Thickness 0.2″ (5mm) SCH80 | |||
| 126lbs (57kg) | 14lbs (6.5kg) | 591″ × (67″ + 79″) × 71″ 1500 × (170 + 200) × 180cm | 19.7″ (50cm) | 748″ (1900cm) | Thickness 0.2″ (5mm) SCH80 | |||
| 56.5lbs (25.5kg) | 10.5lbs (5.0kg) | 354″ × (59″ + 67″) × 63″ 900 × (150 + 170) × 160cm | 19.7″ (50cm) | 512″ (1300cm) | Thickness 0.2″ (5mm) SCH80 | |||
Other configurations are available on request.
All weights and dimensions are nominal and subject to variation in material compositions and Jennings Anodes foundry tolerance.
We employ rigorous internal casting and testing standards to ensure the optimum lifespan and performance of our Anodes. Third party testing is available upon request.
Each anode is labelled with a unique serial number for quality tracking.
| Testing | Chemical Composition | Electrochemical Properties | Physical Properties & Appearance | ||
| Testing Standard | ISO 9001 Quality Management System and Foundry Internal Quality Standard | ||||
| DNVRP B401 GALVALUM III | NACE TM0190 | NACE SP0387, Foundry ITP | |||
| Item | Chemical Analysis | Circuit Potential, Current Capacity, Current Efficiency | Surface Appearance, Weight & Dimensions, Steel Core, Resistance between Steel Core and the Anode. | ||
| Equipment & Devices | Optical Emission Spectrometer OBLF QSN 750 | Electrochemical Analyzer EPI 200, Reference Electrode | Calibrated digital measuring devices | ||
We have strict packing protocols to guarantee safe delivery of our products. Clear shipping marks and documentation make delivery acceptance straightforward and simple.
Custom packing is available upon request.
Shipping Documents:
- Proforma invoice
- Packing list
- Testing reports (Chemical Composition, Electrochemical Properties Test, Certificate of Compliance)
- Others upon request (e.g. Certificate of Origin)
More about aluminium anodes
We can offer a complete line of marine environment aluminium anodes in varying sizes, weights and core configurations.
A cast in steel core allows for direct welding to the protected steel structure ensuring a reliable connection.
