620 Datasheet //top\\ — Zinc Anode

Based on standard industrial datasheets , the 620 series typically adheres to the following profiles:

-1.05 Volts (relative to Ag/AgCl reference electrode).

This guide serves as an expanded reference datasheet for the 620 zinc anode, detailing its chemical composition, physical properties, operational mechanics, and installation best practices. 1. Product Overview

Standard Marine (MIL-DTL-18001K) vs. High-Purity Soil/Freshwater Grade (ASTM B418 Type II). zinc anode 620 datasheet

: Resistant to dry heat up to 150°C (some variants up to 80°C) but not recommended for acid or alkaline immersion. www.bergerarabiapc.com Physical Properties Color & Finish : Metallic Grey with a Matt finish. Volume Solids

The Zinc Anode 620 is manufactured using high-grade zinc alloy. It conforms to international standards like or ASTM B418 Type I . The precise chemical breakdown ensures steady activation and prevents passivation. Weight Percentage (%) Purpose / Effect Zinc (Zn) Remainder (Min 99% Pure) Primary sacrificial base metal Aluminum (Al) 0.10 – 0.50% Promotes uniform, even corrosion Cadmium (Cd) 0.025 – 0.07% Prevents the formation of passive films Iron (Fe) 0.005% Max Kept low to avoid localized self-corrosion Copper (Cu) 0.005% Max Restricted to prevent reduction in efficiency Lead (Pb) 0.006% Max Strictly controlled impurity limit 3. Electrochemical Performance Characteristics

Contains over 80% zinc by weight in the dry film. Volume Solids: 62% ± 2%. Based on standard industrial datasheets , the 620

| Feature | Zinc Anode (620) | Aluminum Anode | | :--- | :--- | :--- | | | Seawater (Saltwater) | Seawater / Brackish | | Theoretical Capacity | 780 Ah/kg | > 2500 Ah/kg | | Current Efficiency | ~95% (Seawater) | ~93% | | Consumption Rate | ~11.8 kg/(A·yr) | ~3.8 kg/(A·yr) | | Weight | Dense/Heavy | Lighter per unit output | | Freshwater Performance | Poor (Passivates) | Good | | Environmental Safety | Contains trace Cd | Generally Cd-free |

: Large hull anodes, such as the NAL 8 model, can have lengths of 620mm and weigh approximately 8kg . Go to product viewer dialog for this item. Zinc Pencil Anode

For precise engineering calculations or to obtain a manufacturer-specific datasheet (PDF), please contact your local cathodic protection supplier. Product Overview Standard Marine (MIL-DTL-18001K) vs

: 75 microns Dry Film Thickness (DFT) / 120 microns Wet Film Thickness (WFT). Theoretical Coverage : Approximately 8.27 m2m squared /liter at 75 microns DFT. Finish & Color : Metallic Grey with a matt finish. VOC Content : 330 g/liter. Application & Performance

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