| Property | Zinc Anode 620 | Aluminum Anode (Al/Zn/In) | Magnesium Anode | |------------------------|------------------------|----------------------------|-----------------------| | (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) |
| Element | Percentage (%) – MIL/ASTM Standard | |--------------------|-------------------------------------| | Zinc (Zn) | 99.86% Minimum | | Aluminum (Al) | 0.10% – 0.50% | | Cadmium (Cd) | 0.025% – 0.070% | | Iron (Fe) | 0.003% Max | | Lead (Pb) | 0.003% Max | | Copper (Cu) | 0.002% Max | zinc anode 620 datasheet
In the world of cathodic protection (CP), few components are as vital or as misunderstood as the sacrificial zinc anode. Among the standard shapes and sizes, the (often referred to as the “620 profile” or “620 brace”) is a workhorse for the marine, offshore, and underground storage industries. If you are looking for the definitive zinc anode 620 datasheet , this guide provides full technical specifications, electrochemical performance data, and installation criteria. 1. What is the "Zinc Anode 620"? The term "620" typically denotes a Hull or Brace Anode weighing approximately 6.2 kg (13.66 lbs) or measuring roughly 620 mm in length depending on the manufacturer's code. However, the industry standard for the “620” profile most commonly refers to a trapezoidal or rectangular bar anode used predominantly on ship hulls, heat exchangers, and water box applications. | Property | Zinc Anode 620 | Aluminum