Quality	Standard	Material No.	Available coatings
S420GD	DIN EN 10346	1.0239	+Z, +ZF, +ZA, +ZM, +AZ

Testing direction	Yield strengthRP02 (MPa)	Tensil Strength Rm (MPa)	Elongation A80 (in %)
L	≥ 420	≥ 480	≥ 15

The hot-dip galvanized steel S420GD in accordance with the EN 10346 standard is a high-strength structural steel that was developed for demanding applications in structural engineering and building construction. With the material number 1.0239, S420GD has a minimum yield strength Rp0.2 of 420 N/mm² and is therefore one of the steels in the upper strength classes. The hot-dip galvanizing process produces a uniform zinc coating that efficiently protects the steel against corrosion and significantly increases its service life under changing weather conditions. Available coatings are +Z (pure galvanized), +ZF (zinc-iron), +ZA (zinc-aluminium), +ZM (zinc-magnesium) and +AZ (aluminium-zinc), with which the material can be optimally adapted to specific application environments.

S420GD combines high strength with sufficient ductility and excellent corrosion protection. The above-mentioned characteristics ensure that S420GD offers reliable load-bearing capacity even under high static or dynamic loads. The hot-dip galvanized coating forms a robust sacrificial anode:

In addition, S420GD is characterized by a homogeneous microstructure, good weldability and precise dimensional accuracy, which enables economical further processing in cutting, bending and welding processes.

Thanks to its outstanding mechanical properties and reliable corrosion protection, S420GD is used in a wide range of construction projects:

Choosing the right coating makes it possible to significantly extend maintenance cycles and reduce the total cost of ownership over the life cycle of the structure.

With a minimum yield strength of 420 N/mm² and high tensile strength, the hot-dip galvanized steel S420GD in accordance with EN 10346 offers a high-performance material solution for modern construction projects. Its wide range of coating variants allow it to be precisely adapted to a wide variety of environmental conditions – from temperate interiors and industrial atmospheres to maritime coastal zones or thermally stressed applications. Construction companies and planners benefit from a combination of high load-bearing capacity, excellent corrosion resistance and economical processing, which makes S420GD a sustainable and future-proof choice for demanding steel structures.