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Knowledge Base

Metal, Steel, and Zinc in Anchors

Zinc-coated steel using a hot galvanizing process is the most effective method of protecting carbon-based steel from rusting. 

Different metals are different in strength and their metallurgical quality, these factors are defined in the factory where they are made as raw material from the initial form of iron. 

The mechanical process (casting, forging, milling, and such) while processing the metal can also have a large impact on metal characteristics, behavior, and quality. 

Our anchors are made with Hardox450 HT steel with a minimum yield strength of 1,100 Mpa which gives them along with The use of the right geometry the incredible lightness compared to their size and holding power. 

Choosing the right steel to build anchors is a compromise, the grade of the steel, the weight, and the price, higher tensile metals are a lot more expensive and are harder to cut, bend and weld. 

The shank on any anchor is a common failure point,. The most venerable and weak issue is bending it when a high lateral load is applied to the anchor. This can happen, for example, when the wind direction suddenly changes, pushing the boat sideways. Looking to minimize the occurrence of such events, we are using only high-grade high-tensile steel to build our anchors.   Due to their design the higher the tension on the anchor increases the burial of the anchor leaving less or no shank exposed.  If there is a lateral tension applied our shanks, being buried, act as a vertical fluke supported by the seabed, see how it works here.

"Viking anchors are constructed from F700, hot-rolled construction steel with a minimum yield strength of 1,100 MPa. This does not include the roll bar. Flukes and shank are preheated before welding, which is the recommended technique for this type of material. The result is an anchor that is at least as strong as one made from mild steel that would weigh considerably more. Viking is a technically sound anchor that seems to offer worthwhile benefits".

 

Anti-rust treatment.

 

The zinc coating preventing the steel from rusting is created using the "hot-dip galvanizing” process. Other processes exist but are inferior and will result in less durable finishings.  All of our steel anchors are treated with a “hot-dipped galvanizing" process.

 

Viking Steel Anchors are galvanized to a specification exceeding industry standards (80-micron) we strive to get a minimum coating layer of 100-micron.  our anchors are checked for galvanizing thickness using a coating thickness meter.

 

 

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