FAQ

The table below shows the equivalent grades of Hot Dipped Galvanized Sheet and MAGNELIS®.

Notably, MAGNELIS® can serve as an effective replacement for hot-dip galvanized sheet metal, even in aggressive environments. 

Let’s consider the example of steel designations S315 – S700MC. These designations provide essential details about the steel’s properties. The “M” designation indicates that the steel is either thermomechanically rolled or classified as fine-grained. This process enhances the material’s strength and formability. The “C” designation signifies that the sheet metal has a lower carbon content, making it suitable for cold forming. This means it can be shaped even at lower temperatures. The number preceding the “MC” designation represents the minimum yield voltage (measured in megapascals, MPa). It indicates the force required to permanently deform the steel. 

These sheets typically do not come with a guaranteed toughness of 27 joules (J) at -20°C. However, it’s essential to note that the manufacturer Arcelor Amstrong provides additional information on material toughness for sheet thicknesses exceeding 6.00 mm. This information is typically stated on the material certificate. 

Let's take the example of the S355J2C+N tag. 

The “C” designation signifies that the sheet metal has a lower carbon content, making it suitable for cold forming. This means it can be shaped even at lower temperatures. 

The chemical composition of steel significantly affects the appearance, quality, and thickness of the zinc coating. Silicon (Si) and phosphorus (P) content are particularly influential. According to the EN ISO 14713–2 standard, Table 1 defines four categories (A, B, C, D) based on chemical composition: 

Category A: Silicon content below 0.03% and phosphorus content below 0.02%. Additionally, the combined value of silicon (%) + 2.5 times phosphorus (%) must be less than 0.04%. 

Category B: Silicon content between 0.14% and 0.25%, with a maximum phosphorus content of 0.030%. 

The thickness of the zinc coating is determined by the diffusion of zinc into the steel, which is influenced by the silicon and phosphorus content. Steels in Category A and B consume less zinc during the galvanizing process, resulting in a lower cost and a higher quality coating with good adhesion and durability.  

When ordering, it is crucial to specify the required category or silicon content: 

Category A: Si ≤ 0.03% – standard sheet metal according to EN 10025 / EN 10051. By prior agreement, sheet metal can also be produced according to EN 10051 in Category B. 

Category B: Si 0.14%–0.25% – standard sheet metal according to EN 10025 / EN 10029. 

Yes, the manufacturer (or our supplier, partner) provides all the above listed certificates.

Surface Type A: Defects like pores, grooves, minor warts, light scratches, and light staining are allowed, as long as they do not affect the surface’s suitability for further processing or the adhesion of coatings. 

Surface Type B: The better side must be free of defects to ensure a uniform appearance for quality paint or electrolytically applied coatings. The other side must at least meet the requirements of Surface Type A. 

Yes, we can arrange a “UZ” inspection of the sheet metal by prior agreement. We have a partnership with an external contractor, the Institute of Welding. 

Yes, we can arrange a “UZ” inspection of the sheet metal by prior agreement. We have a partnership with an external contractor, the Institute of Welding.