En 10020 Pdf May 2026

standard is a foundational European technical document that provides the official definitions and classification system for grades of steel. Published in its current form in

Conclusion

• Non-alloy steels: Where specific limits on certain elements (like chromium, nickel, or molybdenum) are not exceeded.
• Alloy steels: Where the content of one or more specific elements exceeds defined limits.

Non-alloy special steels: Feature higher purity (lower sulfur and phosphorus) and consistent response to heat treatment. en 10020 pdf

3.1 Non-Alloy Steels

• No alloying element exceeds the specified minimum limit (e.g., Cr < 0.30%, Ni < 0.30%, Mo < 0.05%)
• Carbon content typically < 0.50% for many grades (exceptions exist)
• Examples: C22, C45, S235JR

This standard defines the term "steel" and establishes a system for classifying steel grades into: Non-alloy steels Stainless steels Other alloy steels 2. Definition of "Steel" standard is a foundational European technical document that

The standard primarily categorizes steel into three main groups based on their chemical composition ScienceDirect.com Non-Alloy Steels Non-alloy steels: Where specific limits on certain elements