A chromium-molybdenum steel providing excellent resistance to heat and hydrogen attack, common in petrochemical applications.
The standard listed several well-known material numbers (Werkstoffnummern), including: din 17243 pdf
EN 10222-2 covers "Steel forgings for pressure purposes – Part 2: Ferritic and martensitic steels with specified elevated temperature properties." While the DIN version is still referenced in legacy projects and specific regional maintenance codes, new designs typically adhere to the EN equivalent to ensure compliance with the Pressure Equipment Directive (PED). Key Technical Specifications din 17243 pdf
Since the standard is withdrawn, digital copies are typically available through historical archives or standards organizations: din 17243 pdf
If you operate internationally, ISO 683-14 is more globally recognized. It includes many of the same steel grades (e.g., 51CrV4, 55Cr3).