verzinkte

Verzinkt is a German term used to describe iron or steel objects that are coated with zinc to protect against corrosion. The process is commonly referred to as Verzinken. The most widespread method is hot-dip galvanizing, where the part is dipped into molten zinc at roughly 450 °C, creating a metallurgical bond and a zinc-iron alloy layer at the surface. Another method is electrogalvanizing, in which zinc is deposited by electroplating, producing thinner and more uniform coatings.

Coating thickness varies by method and purpose, typically ranging from several tens to about one hundred micrometers. The zinc coating provides cathodic (sacrificial) protection: if the coating is damaged, the remaining zinc still protects the underlying steel. In addition, the coating can form a passive patina over time, consisting of zinc oxides and carbonates, which helps shield the metal in outdoor environments.

Applications are widespread and include structural steel components, nails, screws, bolts, fences and posts, reinforcing bars, street furniture, electrical enclosures, and many architectural and construction hardware items. Verzinkte products are valued for durability, low maintenance, and extended service life in corrosive environments.

Durability and appearance: hot-dip galvanized finishes often display a spangled or matte appearance and gradually develop a gray patina with weathering. In aggressive or marine atmospheres, coating quality and thickness are critical for longevity, and damaged areas may require repair or recoating.

Standards and terminology: in Europe and German-speaking regions, hot-dip galvanizing is governed by standards such as EN ISO 1461, with coating specifications typically expressed by thickness and coating mass per area or class. Verzinkt items are selected for corrosion resistance and long-term performance.