Corrosion and damage caused by corrosion is costly. Hot-dip galvanized steel can help combat corrosion. Learn about the properties and performance of HDG steel and how galvanizing can enhance a project.
Achieving a high-quality hot-dip galvanized coating starts with proper design. Learn how to incorporate the best design practices that promote higher quality products with reduced cost and shorter turnaround times.
Inspection of hot-dip galvanized steel is required to confirm applicable specification requirements are in compliance for optimal durability and performance of the galvanized product. Learn about the HDG inspection process.
Painting over hot-dip galvanized steel (duplex system) can provide benefits beyond just achieving the desire aesthetics. Understand how proper surface preparation is important to the success of the paint or powder coating adhesion.
When selecting a corrosion protection system for a given project, it is paramount to consider more than just the initial cost. Taking into account the life-cycle cost of maintaining a corrosion protection system provides a more accurate prediction of the project’s impact on future generations.
HDG steel may have a variety of different initial appearances, including bright and shiny, dull, spangled, mottled, or matte gray. Learn more about the causes and concerns relating to HDG steel’s appearance.
The Life-Cycle Cost Calculator (LCCC) allows you to input specific project data to compare the initial and total cost (initial + maintenance) of more than 30 steel corrosion protection systems (paint, metallizing) compared to hot-dip galvanizing.
The Zinc Coating Life Predictor (ZCLP) is a tool that estimates the corrosion rate of zinc in various environments using statistical methods, neural network technology, and an extensive worldwide corrosion database.
The Progressive Dip Calculator is a tool used to confirm whether an article of known dimensions can be progressive dip galvanized within a galvanizing kettle of known dimensions by modeling the article as a 3-dimensional box.
The corrosion resistance of zinc coatings is proportional to the thickness of the coating but varies with the environmental exposure conditions. Each environment affects hot-dip galvanizing differently based on a unique set of corrosion variables.
The hot-dip galvanized coating is primarily comprised of zinc and zinc alloys and is sometimes placed in contact with different metals. This creates the possibility for galvanic corrosion that depends on the position of the other metal relative to zinc in the galvanic series, and to a lesser degree on the relative size of the surface area of the two metals in contact.
Though many specifiers are familiar with specifying one type of corrosion protection or another, few realize the intrinsic value of utilizing two corrosion protection systems together, known as a duplex system. A duplex system is formed by painting or powder coating over hot- dip galvanized steel.
General article detailing the various sustainability resources offered by the AGA as well as the steel (AISI & AISC) and zinc industry (IZA).
The AGA has developed an industry-wide EPD for hot-dip galvanized steel after fabrication hot-rolled sections, plate, and hollow structural sections.
