Worldwide Steel Grade Equivalents

Resources, Standards

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https://www.mitsubishicarbide.net/contents/mmus/enus/manual/material_cross_reference.pdf

This Mitsubishi Materials Cross Reference guide functions as a technical bridge between global material standards, providing a systematic mapping of alloys across ISO, AISI, DIN, JIS, and BS designations. It categorizes industrial materials into primary machining groups—Steel (P), Stainless Steel (M), Cast Iron (K), Non-ferrous (N), Heat-resistant Alloys (S), and Hardened Materials (H)—to facilitate precise tool selection.

The document provides essential data on chemical compositions and hardness ranges, allowing for the direct correlation of workpiece properties to optimized carbide grades and cutting geometries.

Manufacturing and quality engineers utilize this reference to maintain operational consistency when transitioning between international suppliers or regional material specifications. By applying these cross-references, professionals ensure that machining parameters remain stable and tool life is maximized across diverse production environments.

Important note: while some steels are atom-to-atom equivalent, most are *similar*, ie composition is not exactly identical from one standard to another -not even counting the manufacturing method that may also induce other differences than the chemistry-. Critical applications must look at these level of details.

Tip: not a unique resource, but here a very convenient cross-standards pdf to bookmark or save and print locally.

Disciplines: Materials science, Mechanical engineering, Procurement, Manufacturing, Metallurgy, Machining.

Free alternative to Matmatch, MatWeb, Key to Steel.

Worldwide Steel Grade Equivalents compared with Matmatch, MatWeb and Key to Steel
Worldwide Steel Grade Equivalents (Mitsubishi Materials cross reference)	Matmatch	MatWeb	Key to Steel
Scope and content: The document is a cross reference of metal designations grouped by material family: carbon and alloy steel, stainless steel, cast iron, mold and die steel, high-speed tool steel and heat-resistant alloys. It is written from the viewpoint of machining and tool selection.	Scope and content: Matmatch is a materials search platform that links engineers with suppliers. Its About page cites over 31,000 materials that can be discovered, compared and evaluated. The emphasis is on property comparison and sourcing, not on mapping designations between national standards.	Scope and content: MatWeb is a database of material data sheets for metals, plastics, ceramics and composites, with 185,000 data sheets listed on its membership page. It is organised around property values of individual materials.	Scope and content: Key to Steel is a trilingual reference for steels. The 2025 edition covers more than 75,000 standard designations and trade names from about 300 steelmakers and suppliers in 25 countries, including structural, tool, stainless and heat-resistant steels.
Standards and cross-referencing: Each row gives one designation per standard. The edition checked lists JIS, DIN, BS, EN, AFNOR, UNI, UNE, SS, AISI/SAE and GB columns, with a dash where no equivalent exists. Entries are cross references, not guaranteed identical specifications, and a few designation numbers appear in more than one row, so critical applications need a check against the original standards.			Standards and cross-referencing: Search is possible by designation, by chemical composition, or by mechanical and physical properties. The interface is available in English, German or French, so it works as a decoder for unfamiliar designations as well as a lookup table.
Data depth: The edition checked lists designations only. It shows no chemical composition or hardness values in its tables, so property data must come from the standards or the steel supplier.	Data depth: Materials can be compared by physical, chemical and thermal characteristics. Coverage includes metals, ceramics, polymers and composites.	Data depth: Data sheets can be downloaded as PDF. Registered users can compare a limited number of data sheets side by side, and a larger number with the paid membership.	Data depth: Chemical composition and mechanical or physical properties are searchable fields, which makes it possible to find a similar grade from composition and not only from a designation.
Access and format: A static PDF published on a tool manufacturer site, suitable for saving locally or printing.	Access and format: A free-to-use search engine according to the vendor blog. It is web based and also serves as a channel to suppliers.	Access and format: Free registration gives access to the same data sheets as paid membership. The paid tier adds graphing, sorting, and export to CSV, Excel and CAD or simulation formats such as SolidWorks, ANSYS and Comsol.	Access and format: An online database. The access model and any fee are not stated on the ASM International page that presents it, which refers visitors to keytosteel.com for details.