To distinguish between non-alloy and alloy steels, EN 10020 sets specific weight percentage thresholds for various elements: Limit Value (% by mass) Aluminium (Al) Chromium (Cr) Copper (Cu) Manganese (Mn) Nickel (Ni) Silicon (Si) 2. Main Quality Classes
Published by the , the current version is EN 10020:2000 , which superseded the 1988 edition. It is used across various European nations, often appearing under national identifiers such as BS EN 10020 in the UK or DIN EN 10020 in Germany. 1. Classification by Chemical Composition en 10020 pdf
Grades that do not meet the stainless steel definition but have at least one element exceeding the limit values in Table 1. Key Boundary Limits (Table 1) To distinguish between non-alloy and alloy steels, EN