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High Capacity Aluminum-Zinc-Indium Alloy Sacrificial Anode for Seawater to Moist Soil Applications
Product Details:
| Place of Origin: | Hunan, China |
| Brand Name: | High Broad |
| Certification: | ISO 9001, ASTM G97, DNV, BV, ROHS, REACH |
| Model Number: | HB-AL |
Payment & Shipping Terms:
| Minimum Order Quantity: | 10 Kilograms |
|---|---|
| Price: | USD 3-5 / Kilogram |
| Packaging Details: | On pallet with steel bundles, wooden case available upon request |
| Delivery Time: | 14 Days for 1 FCL |
| Payment Terms: | T/T,L/C,Western Union,PayPal |
| Supply Ability: | 300 Metric Tons per Month |
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Detail Information |
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| Anode Type: | Sacrificial Cast / Bracelet / Hull Anode | Material: | Aluminum-Zinc-Indium Alloy (AL-ZN-IN) |
|---|---|---|---|
| Current Capacity: | ≥2400 Ah/kg (Type 1) / ≥2600 Ah/kg (Type 2) | Current Efficiency: | ≥85% (Type 1) / ≥90% (Type 2) |
| Open Circuit Voltage: | -1.10 To -1.18V (vs Cu/CuSO4) | Density: | 2.7 G/cm³ |
| Highlight: | High Capacity Aluminum Alloy Anode,Seawater Moist Soil Corrosion Protection,Low Medium Resistivity Sacrificial Anode |
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Product Description
High Capacity Aluminum Alloy Sacrificial Anode for Seawater to Moist Soil Applications
This high capacity aluminum alloy sacrificial anode provides reliable cathodic protection across a versatile range of environments: from aggressive seawater and sea mud, through brackish water and moist soil, to low and medium resistivity ground conditions up to 3,000 ohm·cm. With current capacity up to 2600 Ah/kg and efficiency up to 90%, it delivers industry-leading protection at the lowest cost per ampere-hour.
Versatile Environmental Performance
- Seawater (20-30 ohm·cm): The aluminum anode's native environment. Excellent current output with uniform consumption pattern. Ideal for ship hulls, offshore platforms, and marine structures in continuous seawater immersion
- Sea Mud and Brackish Water (30-500 ohm·cm): Retains electrochemical activity even when buried in sediment. Aluminum-zinc-indium alloy avoids the passivation that affects other materials when covered by silt or marine growth
- Moist Soil (500-2,000 ohm·cm): Delivers adequate protective current in clay, loam, and damp soil conditions. Can be used for buried pipelines and storage tank bottoms in areas with natural soil moisture
- Low to Medium Resistivity Soil (≤3,000 ohm·cm): Functions effectively in soils with sufficient moisture content. Prepackaged backfill option available to extend the operable range
Two Performance Grades Available
| Parameter | Type 1 (Standard) | Type 2 (High Performance) |
|---|---|---|
| Current Capacity | ≥2400 Ah/kg | ≥2600 Ah/kg |
| Current Efficiency | ≥85% | ≥90% |
| Consumption Rate | ≤3.65 kg/A·year | ≤3.37 kg/A·year |
| Alloy Composition | A11, A12, A13, A14 | A21 (with Mg + Ti) |
| Recommended Use | Seawater, sea mud, brackish water | Moist soil, low-medium resistivity, extended life |
Technical Specifications
| Alloy Grade | Al-Zn-In-Cd (A11) / Al-Zn-In-Sn (A12) / Al-Zn-In-Si (A13) / Al-Zn-In-Sn-Mg (A14) / Al-Zn-In-Mg-Ti (A21) |
| Open Circuit Voltage | -1.10 to -1.18V (vs Cu/CuSO4) |
| Close Circuit Voltage | -1.05 to -1.12V (vs Cu/CuSO4) |
| Density | 2.7 g/cm³ |
| Service Temperature Limit | 50°C continuous (water/mud), 80°C short duration |
| Available Forms | Hull anode, braceLet anode (half shell), ballast tank anode, rod, bar |
| Mounting Options | Weld-on straps, bolt-on studs, tubular cores, threaded rod connections |
Environment Selection Guide
| Application Environment | Resistivity (ohm·cm) | Aluminum Anode | Zinc Anode | Magnesium Anode |
|---|---|---|---|---|
| Seawater | 20-30 | ★★★ Best Choice | ★★★ Best Choice | ✗ Not Recommended |
| Sea Mud | 30-200 | ★★★ Best Choice | ★★ Good | ✗ Not Recommended |
| Brackish Water | 100-500 | ★★★ Best Choice | ★ Limited | ✗ Not Recommended |
| Moist Clay/Loam | 500-2,000 | ★★ Good | ★ Limited | ★★★ Best Choice |
| Low-Medium Resistivity Soil | 2,000-3,000 | ★★ Good (with backfill) | ✗ Not Recommended | ★★★ Best Choice |
| Dry/Rocky/Sandy Soil | >3,000 | ✗ Not Recommended | ✗ Not Recommended | ★★★ Best Choice |
Applications
- Ship hulls, propellers, and rudders in saltwater service
- Offshore oil and gas platforms in seawater and sea mud
- Subsea pipelines and flowlines with bracelet anodes
- Harbor sheet piling, dock structures, and pier pilings
- Ballast tanks on tankers, bulk carriers, and naval vessels
- Buried pipelines and storage tanks in moist, low-medium resistivity soils
- Condenser water boxes and heat exchanger anti-corrosion systems
- Marine Growth Prevention Systems (MGPS) on commercial vessels
Quality and Custom Manufacturing
All anodes are manufactured to ASTM G97 and MIL-A-24779(SH) standards with full traceability. We offer comprehensive customization: anode weight from 1kg to 275kg, all core configurations (flat bar, tubular, threaded), any mounting type, and custom alloy formulations for specialized environments. With over 20 years of experience and 5,000 metric tons annual capacity, we ensure consistent quality for global projects.
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