Zinc Anode 620 Datasheet

Iron (Fe) is the most destructive impurity in a zinc anode. If iron levels exceed 0.005%, the anode forms a dense, tightly adherent passive layer of zinc hydroxide on its surface. This layer increases internal resistance, stops the sacrificial current flow, and renders the anode useless. The inclusion of aluminum and cadmium ensures that the corrosion crust remains loose and flakes away, exposing fresh zinc over time. 2. Electrochemical Characteristics

The efficiency of a zinc anode depends heavily on its purity. Impurities like iron, copper, or cadmium can lead to the formation of a passive oxide layer, stopping the anode from working. The "620" specification ensures high purity. 1. Chemical Composition (ASTM B418 Standard) Remainder (≥ 99.9%) Aluminum (Al): 0.10 - 0.5% (Type II) or < 0.005% (Type I) Cadmium (Cd): 0.025 - 0.07% Iron (Fe): ≤ 0.005% Lead (Pb): ≤ 0.006% Copper (Cu): ≤ 0.005% 2. Electrochemical Properties

Harbor and dock infrastructure protection. Key Advantages of High-Purity Zinc Anodes

A standard 620 datasheet specifies the electrochemical metrics that engineers use to calculate the lifespan and quantity of anodes required for a vessel.

This product must meet demanding material standards to function effectively: zinc anode 620 datasheet

Extended straps on both ends for weld-on or bolt-on mounting Chemical Composition (ASTM B418 Type I)

: Contains at least 80% zinc by weight in the dry film. Volume Solids : 62% ± 2%.

This comprehensive guide breaks down the technical datasheet parameters, material compositions, and installation best practices for the 620 zinc anode. 1. Overview of the 620 Zinc Anode

What is the of your vessel (steel, fiberglass, or aluminum)? Iron (Fe) is the most destructive impurity in a zinc anode

>95% (No hydrogen embrittlement risk for high-strength steel).

The 620 profile is optimized for medium-to-heavy structural protection where a low-profile design is required to minimize hydrodynamic drag.

Contains over 80% zinc by weight in the dry film.

This datasheet provides engineers and maintenance crews with the exact electro-chemical properties, dimensional data, and installation requirements for the 620-series anode. The inclusion of aluminum and cadmium ensures that

The steel surface directly beneath a bolt-on anode must be cleaned to bare metal to ensure low electrical resistance.

Comprehensive Guide to Zinc Anode 620: Datasheet, Applications, and Performance Specifications

If you need help calculating your system requirements, let me know: The of the metal you need to protect

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What is the total you need to protect?

Sacrificial anodes rely on direct electrical contact with the metal they protect.