Zinc Anode 620 Datasheet -

Formula: Life (Years) = (Weight (kg) × Capacity (A·h/kg)) / (Current (A) × 8760 h/yr)

Scenario (6.8 kg hull anode):

The zinc anode 620 is the gold standard for protecting steel structures in warm, saline marine environments. Its low driving voltage prevents over-protection (hydrogen embrittlement) on high-strength steels, which aluminum anodes cannot guarantee.

Final Specification Summary (Cheat Sheet):

Downloadable Tags for Procurement:

"Supply Zinc Hull Anode – Profile 620 – Dimensions L620 x W100 x T40/20 – Weight 6.2kg – Composition per ASTM B418 Type I – Weld-on galvanized core – Cert required."

Disclaimer: Datasheets vary by foundry. Always verify dimensional drawings (DWG) and electrochemical test reports prior to installation. This article reflects industry standards as of the latest NACE SP0387 and ISO 15589-2.

This is a two-pack, high-solids, epoxy zinc-rich primer designed to provide superior corrosion protection to steel in aggressive environments like offshore platforms and petrochemical plants. Key Features: zinc anode 620 datasheet

High Zinc Content: Contains over 80% zinc by weight in the dry film.

Aggressive Environments: Suitable for ISO 12944 C5 environments (highly corrosive). Temperature Resistance: Withstands dry heat up to Technical Specifications: Volume Solids: Dry Film Thickness (DFT): Typical 75 microns. Theoretical Coverage: Approximately at 75 microns DFT. Mixing Ratio: 3 parts Base to 1 part Hardener by volume.

Application: Recommended for airless spray application on abrasive blast-cleaned steel (Sa 2.5 standard). 2. SeaZinc SRT-1 / SRT-3 Strip Anodes (Sacrificial)

In the context of sacrificial cathodic protection, "620" refers to the overall length (mm) of specific strip-type zinc anodes used for seawater cooling systems and pipelines. Dimensions (mm) Steel Insert (mm) Net Weight (kg) SRT-1 620 SRT-3 620 SRT-4 620

Standard Compliance: These typically conform to US Mil Spec 18001K or ASTM B418.

Performance: Offers a potential of approximately -1.05V vs Ag/AgCl with a capacity of roughly 780 amp-hours per kilogram. Comparison Summary Berger Zincanode 620 Sacrificial Strip Anode (620mm) Product Type Liquid Coating (Primer) Solid Metal Casting Function Barrier & Galvanic Protection Sacrificial Cathodic Protection Application Sprayed onto surface Bolted or welded to structure Environment Structural steel, pipe exteriors Submerged hulls, cooling systems zincanode 620 - Berger Protective Coating [UAE]

The Zincanode 620 is a high-performance, two-part epoxy zinc-rich primer specifically engineered to provide superior cathodic protection for steel structures in highly corrosive environments. Often categorized by the keyword "zinc anode 620," this product functions as a "sacrificial" coating, protecting the underlying steel from rust even if the film is damaged.

Below is a detailed technical overview based on the standard Berger Zincanode 620 datasheet. 1. Key Performance Characteristics Formula: Life (Years) = (Weight (kg) × Capacity

The Zincanode 620 stands out due to its high metallic zinc content and rapid curing capabilities.

Zinc Loading: Contains more than 80% zinc by weight in the dry film, ensuring high electrical conductivity for galvanic protection.

Corrosion Resistance: Suitable for environments up to C5-M (Marine) and C5-I (Industrial) classifications according to ISO 12944.

Heat Resistance: Capable of withstanding dry heat up to 150°C (302°F).

Recoatability: Offers long-term recoatability and is compatible with most high-performance topcoats, such as epoxies and urethanes. 2. Technical Specifications Specification Details Volume Solids 62% ± 2% (per ASTM D2697) Typical Dry Film Thickness (DFT) 75 microns Theoretical Coverage 8.27 m²/liter at 75 microns DFT Mixing Ratio 3 parts Base : 1 part Hardener (by volume) VOC Content Approximately 330 g/L Finish & Color Matt, Metallic Grey 3. Application Guide

For maximum efficacy, proper surface preparation and application conditions are critical.

Surface Preparation: Steel must be abrasive blast cleaned to a minimum standard of Sa 2½ (ISO 8501-1) with a surface profile of 50–75 microns. Application Methods:

Airless Spray (Recommended): Use a tip size of 0.43–0.53 mm and a pressure of 130–180 kg/cm². Downloadable Tags for Procurement:

Brush/Roller: Primarily for touch-ups or small, difficult shapes. Multiple coats may be needed to achieve the target DFT. Drying Times (at 25°C): Touch Dry: 20 minutes. Hard Dry: 6 hours. Minimum Overcoating Interval: 12 hours. 4. Major Applications

Zincanode 620 is the industry standard for protecting heavy-duty steel assets, including:

Marine & Offshore: Ship superstructures, offshore platforms, and port facilities.

Infrastructure: Bridges, pipelines, and petrochemical plants.

Industrial Maintenance: Ideal for repairing or touching up existing inorganic zinc coatings. 5. Safety and Handling

Zincanode 620 is a flammable material and contains high levels of zinc dust. Flash Point: Mixed product is approximately 20°C.

Storage: Should be stored in a cool, dry area. The typical shelf life is 6 months from the date of manufacture.

PPE: Use respirators during spray application and avoid skin/eye contact. For full safety details, refer to the Berger Safety Data Sheet. Berger Zincanode 620

Many Chinese and European manufacturers use "620" as a model number, not a dimension.

Composition (Type II - Galvanizing):