I couldn’t find an official or universal datasheet for a "Zinc Anode 620" because that part number isn't a standard industry designation across major marine or cathodic protection brands (e.g., Martyr, Cambrian, MG Duff, Galvotec).
It likely refers to one of these:
To find the correct datasheet, you’ll need to clarify:
If you meant a common 6” x 2” rectangular zinc anode (sometimes mislabeled as 620), typical datasheet specs are:
| Parameter | Typical value | |-----------|----------------| | Weight | ~0.8–1.2 kg | | Length | 152 mm (6”) | | Width | 51 mm (2”) | | Thickness | 25–32 mm | | Mounting holes | 2 (countersunk) | | Alloy | UNS Z33521 (MIL-A-18001K) | | Capacity | ~780 A·h/kg |
If you can share a photo of the anode or the exact markings, I can help identify the correct manufacturer datasheet or equivalent substitute.
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
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.
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. zinc anode 620 datasheet
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
If you are searching for "Zinc Anode 620 datasheet," you likely need zinc specifically. Here is the reality check:
| Property | Zinc Anode 620 | Aluminum Anode (Al/Zn/In) | Magnesium Anode | |------------------------|------------------------|----------------------------|-----------------------| | Capacity (A·hr/kg) | 780 | 2,500 | 1,200 | | Driving Voltage | 0.25V (Low) | 0.30V (Moderate) | 0.70V (High) | | Best For | Seawater, Warm water | Seawater, Mud (Cost effective) | Soil, Fresh water | | Weight for 620 size| 6.2 kg | 2.4 kg (Same volume) | 1.8 kg (Same volume) |
Conclusion for the 620: Choose zinc ONLY for saltwater/brackish water. Do not use zinc in low-temperature fresh water or in high-sulfide muds.
Symptom: The 620 anode is hard, white, and "crusty" while the steel is corroding. Diagnosis: Passivation. Cause:
Fix: Switch to Aluminum anode or verify water chemistry.
Note: Zinc-Carbon anodes degrade faster under heavy load than Alkaline anodes.
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.
Summary of Zinc Anode 620 The Zinc Anode 620 is a specialized sacrificial galvanic anode designed for cathodic protection, primarily used to prevent corrosion of buried or submerged metal structures. 🛠️ Key Technical Specifications
Based on standard industrial datasheets, the 620 series typically adheres to the following profiles:
Material Composition: High-purity zinc alloy (often ASTM B418 Type II for soil or Type I for saltwater).
Open Circuit Potential: Approximately -1.10 Volts relative to a Cu/CuSO4 reference electrode. I couldn’t find an official or universal datasheet
Capacity: Theoretical current capacity of ~820 Ah/kg (372 Ah/lb). Efficiency: Typically ranges from 90% to 95%. 📦 Packaging & Installation
These anodes are often "pre-packaged" to ensure consistent performance in high-resistance soils:
Backfill Mixture: Usually a 50/50 mix of Gypsum and Bentonite.
Purpose: The backfill lowers contact resistance and moisture retention around the anode.
Connection: Supplied with a standard lead wire (e.g., 10ft of #12 AWG THHN/THWN) for connection to the structure. 🌊 Primary Applications
Underground Pipelines: Protecting coated steel pipes from soil corrosivity.
Storage Tanks: Corrosion prevention for the external bottoms of grounded tanks.
Marine Environments: Ideal for structures in saltwater or brackish water where aluminum or magnesium might over-protect.
Grounding: Often used as earthing electrodes to mitigate AC interference. 🛡️ Why Zinc?
Zinc is chosen over magnesium in specific scenarios because it has a lower driving voltage. This prevents "over-protection," which can lead to hydrogen embrittlement or coating disbondment on certain high-strength steels.
Based on the product data sheets from Berger Protective Coatings and related technical specifications (e.g., Scribd PDS), Product Overview: Zincanode 620
Zincanode 620 is a two-component, high-performance, epoxy zinc-rich primer . It is designed for the protection of steel structures in highly corrosive environments, such as marine, offshore platforms, petrochemical plants, and pipelines . Key Technical Specifications
Composition: Contains 80% or more zinc dust by weight in the dry film . Volume Solids: Approximately 62% ±plus or minus Heat Resistance: Dry heat resistance up to 150∘C150 raised to the composed with power C Application: Applied via airless spray, brush, or roller . Surface Prep: Requires blast cleaning to a standard like Recoatability: Offers long-term recoatability . Interesting / Key Features
Versatile Protection: It can be used for both maintenance and repair of inorganic zinc-rich coatings .
Extreme Environment Performance: Suitable for C5 environments as per ISO 12944 Part 2 . Fast Curing: Known for rapid handling features . Appearance: Metallic grey with a matt finish .
Note: As this is a zinc-rich epoxy, it may chalk or discolor when exposed to sunlight, which is typical for this type of coating . To give you the most relevant info from the sheet, Surface preparation requirements ( Safety data (SDS/VOC levels)? Let me know what you'd like to dive into! Zincanode 620 | Epoxy Zinc Rich Primer
Zinc anodes are the unsung heroes of marine and industrial protection. When searching for a 620 datasheet, you are likely looking for a high-capacity, bolt-on sacrificial anode designed for hulls, ballast tanks, or large steel structures.
Below is a comprehensive technical breakdown of the specifications, applications, and installation guidelines for a standard 620-series zinc anode. ⚓ Zinc Anode 620 Technical Specifications
The "620" designation typically refers to a specific weight or size class in the marine industry, often weighing approximately 10–12 lbs (4.5–5.5 kg) depending on the specific manufacturer (e.g., Martyr, Camp, or Tecnoseal). Physical Dimensions (Standard) Length: 12 inches (305 mm) Width: 3 inches (76 mm) Thickness: 1.25 inches (32 mm) Bolt Centers: 6 inches (152 mm) — Common for "620" series Weight: ~11.5 lbs (Zinc alloy) Chemical Composition A specific boat / engine anode model –
To meet MIL-A-18001K (the gold standard for zinc anodes), the alloy must adhere to these strict percentages: Zinc (Zn): Remainder (approx. 99.3%) Aluminum (Al): 0.10% – 0.50% Cadmium (Cd): 0.025% – 0.07% Iron (Fe): 0.005% Max Lead (Pb): 0.006% Max Copper (Cu): 0.005% Max ⚡ Performance Characteristics
The 620 anode works via Galvanic Corrosion. It possesses a lower (more negative) electrochemical potential than the steel it protects.
Open Circuit Potential: -1.05 Volts (relative to Ag/AgCl reference electrode).
Electrochemical Capacity: 780 Amp-hours per kilogram (Ah/kg). Consumption Rate: Approx. 11 kg (24 lbs) per Amp-year. Density: 7.13 g/cm³. 🛠️ Key Applications
The 620 series is a "medium-heavy" anode, making it ideal for: Commercial Hulls: Tugs, barges, and fishing vessels. Ballast Tanks: Protecting internal steel from salt water.
Piers and Pilings: Mitigating corrosion on submerged infrastructure. Heat Exchangers: Large-scale industrial cooling systems. 📝 Installation & Maintenance Best Practices
To ensure your 620 anode provides maximum protection, follow these rules: Electrical Continuity
Never Paint Anodes: Paint insulates the zinc, rendering it useless.
Metal-to-Metal Contact: Ensure the mounting studs are wire-brushed and clean before bolting. Replacement Schedule
The 50% Rule: Replace the anode once it has consumed 50% of its original mass.
Active Monitoring: If an anode looks brand new after six months in salt water, it is likely not working due to poor electrical contact. Environmental Suitability Salt Water: Excellent (Zinc is the industry standard).
Brackish Water: Good (Aluminum may be preferred for low-salinity).
Fresh Water: Poor (Zinc can form a "crust" of oxide that stops the current; use Magnesium instead). If you'd like, I can help you:
Compare prices for 620 anodes from different marine suppliers.
Find the exact CAD drawings for a specific brand's 620 model.
Calculate how many anodes you need based on your vessel's surface area.
Do you have a specific brand (like Martyr or Canada Metals) in mind for this datasheet? AI responses may include mistakes. Learn more
If you need this adapted for a website, catalog, or social media, just let me know.
The Zinc Anode 620 is designed for cathodic protection in saltwater and brackish environments. It provides sacrificial corrosion protection for steel, iron, and aluminum structures such as boat hulls, heat exchangers, and pipelines.