While "620" in the context of zinc anodes most commonly refers to Zincanode 620
To ensure reliable performance, high-quality 620 zinc anodes are cast to meet strict international standards, most notably (US Military Specification) or ASTM B418 Type I . These specifications guarantee that the anode will not "passivate" (form an insulating crust) in saltwater. Weight Percentage (%) Purpose / Effect Zinc (Zn) Remainder (approx. 99.5%) Base active material Aluminum (Al) 0.10% – 0.50% Aids in uniform dissolution and grain refinement Cadmium (Cd) 0.025% – 0.07% Prevents passivation and ensures continuous activation Iron (Fe) 0.005% Max Strict impurity limit; higher levels cause passivation Lead (Pb) 0.006% Max Impurity limit Copper (Cu) 0.005% Max Impurity limit Total Impurities Ensures electrochemical efficiency Electrochemical Performance Characteristics
: Ship superstructures, offshore platforms, jetties, and port facilities. Industrial Infrastructure : Pipelines, bridges, and petrochemical plants. Maintenance zinc anode 620 datasheet
Based on the Zinc Anode 620 datasheet, we recommend the following:
A compliant datasheet will typically specify the following chemical breakdown: Weight Percentage (MIL-SPEC) Purpose / Effect Remainder (approx. 99.1%+) Base metal provider of galvanic current. Aluminum (Al) 0.10% – 0.50% Promotes uniform corrosion and prevents passivation. Cadmium (Cd) 0.025% – 0.07% Aids in shedding the oxide layer to maintain activity. Iron (Fe) 0.005% max Strictly limited; high iron causes quick passivation. Lead (Pb) 0.006% max Impurity control. Copper (Cu) 0.005% max Impurity control. 3. Physical Dimensions and Mechanical Data While "620" in the context of zinc anodes
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Weld-on projection tabs or bolt-on pre-slotted inserts. Core Dimensions: Typically 30 mm x 6 mm extended flat bar. 5. Installation and Maintenance Best Practices Welding Requirements Clean the steel structure surface to a bright metal finish. Position the anode core tabs flat against the structure. 6. Installation and Maintenance Best Practices
The Zinc Anode 620 datasheet may include certifications and compliance with various international standards, such as:
Often modified as a plug or slab style inside the water boxes of marine cooling loops. 6. Installation and Maintenance Best Practices