: Steels where the percentage of alloying elements does not exceed specific limits defined in the standard's reference tables. Base Steels

Understanding EN 10020: The Definitive Guide to European Steel Definitions and Classifications

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: The PDF contains the exact percentage tables for every single element.

Detailed classification by chemical composition (boundaries for non-alloying elements).

EN 10020, titled "Definition and classification of grades of steel," provides the criteria for grouping steels into distinct categories based on their chemical composition and quality tracks. It replaces older, fragmented national standards like the German DIN, British BS, and French NF systems, unifying them into a singular European Standard (EN).