Practical takeaway: If your steel has 0.10% Molybdenum, EN 10020 classifies it as an alloy steel, not a non-alloy steel. This affects heat treatment requirements and welding procedures.
EN 10020 defines stainless as ≥10.5% Cr. It does not guarantee corrosion resistance in all environments. This is a common point of legal confusion.
Legitimate aggregators like IHS Markit, Techstreet, and Accuris also sell EN 10020 PDFs. They often provide additional features like multi-user licenses or subscription management. en 10020 pdf
The standard uses elemental concentration thresholds (mass %) to differentiate categories:
| Element | Non-Alloy Steel (max %) | Alloy Steel (min %) | |---------|------------------------|---------------------| | Cr | < 0.30 | ≥ 0.30 | | Ni | < 0.30 | ≥ 0.30 | | Mo | < 0.05 | ≥ 0.05 | | V | < 0.05 | ≥ 0.05 | | Cu | < 0.40 | ≥ 0.40 | | W | < 0.10 | ≥ 0.10 | Practical takeaway: If your steel has 0
Exception: Stainless steels require Cr ≥ 10.5% regardless of other elements.
The standard clarifies that steel is an iron-carbon alloy with a carbon content generally below 2.06%. It distinguishes between: EN 10020 defines stainless as ≥10
EN 10020 divides steels into three major groups:
EN 10020 is not a material specification (it does not give mechanical properties). Instead, it: