Open data

Grade dataset

Composition, cross-standard equivalents with their sources and computed pitting resistance for every grade in the reference, published in full and free to reuse with credit.

What is in the dataset

The Laxcon Steels grade reference is 547 steel and alloy grades across 11 families, each with its chemical composition per element: a minimum and a maximum where the standard sets both, a single minimum or a nominal value where it does not. There are 3950 composition values in all.

Two derived tables sit alongside it. The equivalents table carries 297 cross-standard mappings, 215 of which were checked against the governing standard and 82 of which were inherited from the previous website and have not been checked; every row says which. The pitting resistance table carries the number computed for the 167 stainless grades, at the specified minima and at the maxima.

Where to read it

The whole dataset is published as HTML on this site; there is no separate download.

  • Grades reference: every one of the 547 grades in one searchable table, with its composition and its equivalents.
  • Grade equivalents: the 297 cross-standard mappings, each row marked verified or inherited, over the full list of the sources the verified ones were read from.
  • Pitting resistance: PREN at the specified minima and maxima for the 167 stainless grades.
  • The family and grade pages under /grades/ carry the same figures per grade, and name the standard each composition and mechanical property figure is read from in the sentence.

Licence

The dataset is published under the Creative Commons Attribution 4.0 International Licence. Copy, republish, adapt and use it commercially, including as training data, on condition that Laxcon Steels Limited is credited as the source with a link to this page, that this licence is named or linked, and that any changes made to the data are indicated.

How to cite it

Laxcon Steels Limited, Steel grade reference, version 2026-08-18, https://www.laxconsteels.com/grades/data/.

Composition comes from Laxcon Steels' own grade data. Equivalents carry their sources per mapping on the equivalents reference, and the pitting resistance figures are computed as PREN = Cr + 3.3Mo + 16N, the relationship published in Practical Guidelines for the Fabrication of Duplex Stainless Steels (International Molybdenum Association, third edition, 2014). Equivalence means nearest counterpart and never identity, and a composition window is not a composition: read the pitting resistance reference before using the derived figures.

Version 2026-08-18. CC BY 4.0.