Key to Steel (Stahlschlussel), 26th Edition: 2025

The updated Key to Steel (Stahlschlüssel/Stahlschluessel) cross-reference book helps to decode/decipher steel designations and find equivalent materials worldwide. The 2025 edition is updated and expanded in many areas, including more than 75,000 standards and steel-brands of approximately 300 steelmakers and suppliers. The presentation is trilingual: English, French, and German. (Where it was possible, former or obsolete designations were retained for reference purposes.)

This indispensable reference is ideal for: mechanical engineers, designers, technical merchants, standards departments, materials testing departments, and more

Contents

Standard Number Arrangement in numerical order
Who Supplies Which Steel
Table of Suppliers
Table of Shape and Condition of Products
Index of Brand Names in alphabetical order

Categories included are:
•    Structural and constructional steels
General structural steel, case hardening steel, nitriding steel, free cutting-steel, heat-treatable steel, ball and roller bearing steel, spring steel, steel for superficial hardening, steel for cold extrusion, tough at subzero steel, pressure vessel steel, heat resisting structural steel, fine grained structural steel
•    Tool steels
Carbon tool steel, high speed steel, hot work tool steel, cold work tool steel
•    Valve steels
•    High-temperature steels and alloys
•    Non-magnetizable steels
•    Heat-resisting steels and alloys
•    Heat conductor alloys
•    Stainless steels
•    Stainless and heat-resisting steel castings
•    Welding filler materials

Detailed compositions and cross referenced standards and designations:
ACI, AFNOR NF, AISI, AMS, AS/NZS, ASME, ASTM, AWS, BDS, BS, CSA, CŠN, EN, FEDERAL, GB, GOST, IS, ISC, ISO, JB, JIS, KS, MIL, MSZ, NS, ÖNORM, PN, SAE, SANS, SRPS (JUS), SS, STAS/SR, STN, UNE, UNI, UNS, YB

Standards and designations from 25 countries:
Australia, Austria, Brazil, Bulgaria, Canada, China, Czech/Slovak Republic, Finland, France, Germany, Great Britain, Hungary, India, Italy, Japan, Republic of Korea, Norway, Poland, Romania, Russia, Serbia, South Africa, Spain, Sweden, USA

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