---
title: "Steel grade dataset: 547 grades, CC BY 4.0 | Laxcon Steels"
source: "https://www.laxconsteels.com/grades/data/"
description: "Chemical composition for 547 grades, 297 cross-standard equivalents with sources, and computed pitting resistance, free to reuse under CC BY 4.0."
---
# 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](https://www.laxconsteels.com/grades/): every one of the 547 grades in one searchable table, with its composition and its equivalents.
- [Grade equivalents](https://www.laxconsteels.com/grades/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](https://www.laxconsteels.com/grades/pitting-resistance/): PREN at the specified minima and maxima for the 167 stainless grades.
- The family and grade pages under [/grades/](https://www.laxconsteels.com/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](https://creativecommons.org/licenses/by/4.0/). 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](https://www.laxconsteels.com/grades/pitting-resistance/) before using the derived figures.

Version 2026-08-18. CC BY 4.0.