Stahlschlüssel (Key to Steel), 2025 Edition - ASM International

: Detailed breakdown of chemical compositions, mechanical properties, physical attributes, and heat treatment references.

Stahlschlüssel (German for "Steel Key"), known in English as is widely considered the bible of steel cross-referencing. Originally published in Germany, it is a comprehensive directory that allows users to cross-reference steel grades from different countries and standards organizations.

The full resource is a copyrighted commercial product published by Verlag Stahlschlüssel Wegst GmbH. While some legacy versions (e.g., 2005) or excerpts may appear on file-sharing sites, the current 26th edition (2025) is only available through purchase as a book, CD-ROM, or online subscription. Official Access and Formats