--- title: "BS steel grades — 1547 designations" description: "Steel grades designated under BS, with chemical composition, mechanical properties and equivalents in other standards. 1547 designations across 549…" canonical: https://steelequivalents.com/materials/bs language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/bs.md cs: https://steelequivalents.com/cs/materiály/bs.md de: https://steelequivalents.com/de/werkstoffe/bs.md es: https://steelequivalents.com/es/materiales/bs.md fr: https://steelequivalents.com/fr/matériaux/bs.md hu: https://steelequivalents.com/hu/anyagok/bs.md it: https://steelequivalents.com/it/materiali/bs.md nl: https://steelequivalents.com/nl/materialen/bs.md pl: https://steelequivalents.com/pl/materiały/bs.md pt: https://steelequivalents.com/pt/materiais/bs.md ru: https://steelequivalents.com/ru/материалы/bs.md tr: https://steelequivalents.com/tr/malzemeler/bs.md zh: https://steelequivalents.com/zh/材料/bs.md ja: https://steelequivalents.com/ja/材料/bs.md ar: https://steelequivalents.com/ar/المواد/bs.md ko: https://steelequivalents.com/ko/재료/bs.md pt-br: https://steelequivalents.com/pt-br/materiais/bs.md hi: https://steelequivalents.com/hi/सामग्री/bs.md content_hash: sha256:c4b8b35cc0ba6930ca07c9a7cb04b7174cccb9b93be4f574833b6f61ea466f55 generated: 2026-09-22 --- > **Machine-readable Markdown rendering.** This is a Markdown representation of a web page, > served for AI agents and crawlers as a token-efficient alternative to the full HTML. > Full interactive HTML version: https://steelequivalents.com/materials/bs > Canonical URL: https://steelequivalents.com/materials/bs > Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi > Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything > below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. BS · 1,547 grades # BS steel grades — 1547 designations Every grade designated under BS, with the material number it maps to, what kind of steel it is, its carbon window and how many other standards carry it. Open a grade for its full composition, properties and its designations in other standards. Every name on this page is an indicative cross-reference, not an asserted identity: the grades are close, not interchangeable. Check the composition before you substitute. ## Also known as 1547 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [– 58C](/materials/msz/58c "– 58C") | [1.4406](/materials/material-no/1.4406 "1.4406") | Stainless steels | ≤ 0.03 | 8 | | [0/4](/materials/bs/0-4 "0/4") | [1.4731](/materials/material-no/1.4731 "1.4731") | Valve steels | 0.35–0.45 | 12 | | [040A04](/materials/bs/040a04 "040A04") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [040A10](/materials/bs/040a10 "040A10") | [1.1121](/materials/material-no/1.1121 "1.1121") | Case hardening steels | 0.07–0.13 | 22 | | [040A10](/materials/bs/040a10 "040A10") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [040A10](/materials/bs/040a10 "040A10") | [1.0322](/materials/material-no/1.0322 "1.0322") | Unalloyed structural steels | ≤ 0.12 | 17 | | [040A10](/materials/bs/040a10 "040A10") | [1.0334](/materials/material-no/1.0334 "1.0334") | Unalloyed structural steels | ≤ 0.1 | 11 | | [040A12](/materials/bs/040a12 "040A12") | [1.0214](/materials/material-no/1.0214 "1.0214") | Unalloyed structural steels | 0.08–0.12 | 4 | | [040A12](/materials/bs/040a12 "040A12") | [1.0311](/materials/material-no/1.0311 "1.0311") | Unalloyed structural steels | 0.1–0.15 | 4 | | [040A12](/materials/bs/040a12 "040A12") | [1.1124](/materials/material-no/1.1124 "1.1124") | Others | 0.1–0.14 | 4 | | [040A12](/materials/bs/040a12 "040A12") | [1.1130](/materials/material-no/1.1130 "1.1130") | Others | 0.1–0.16 | 4 | | [040A12](/materials/bs/040a12 "040A12") | [1.9311](/materials/material-no/1.9311 "1.9311") | Others | 0.1–0.15 | 4 | | [040A12](/materials/bs/040a12 "040A12") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [040A15](/materials/bs/040a15 "040A15") | [1.1141](/materials/material-no/1.1141 "1.1141") | Case hardening steels | 0.12–0.18 | 20 | | [040A15](/materials/bs/040a15 "040A15") | [1.0401](/materials/material-no/1.0401 "1.0401") | Case hardening steels | 0.12–0.18 | 23 | | [045A10](/materials/bs/045a10 "045A10") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [045A10](/materials/bs/045a10 "045A10") | [1.1121](/materials/material-no/1.1121 "1.1121") | Case hardening steels | 0.07–0.13 | 22 | | [045M10](/materials/bs/045m10 "045M10") | [1.1121](/materials/material-no/1.1121 "1.1121") | Case hardening steels | 0.07–0.13 | 22 | | [045M10](/materials/bs/045m10 "045M10") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [050A17](/materials/bs/050a17 "050A17") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [050A20](/materials/bs/050a20 "050A20") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [050A20](/materials/bs/050a20 "050A20") | [1.1151](/materials/material-no/1.1151 "1.1151") | Quenched and tempered steels | 0.17–0.24 | 15 | | [055M15](/materials/bs/055m15 "055M15") | [1.1141](/materials/material-no/1.1141 "1.1141") | Case hardening steels | 0.12–0.18 | 20 | | [055M15](/materials/bs/055m15 "055M15") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [055M15-EN2C](/materials/bs/055m15-en2c "055M15-EN2C") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [060A2](/materials/bs/060a2 "060A2") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [060A30](/materials/bs/060a30 "060A30") | [1.0528](/materials/material-no/1.0528 "1.0528") | Quenched and tempered steels | 0.27–0.34 | 14 | | [060A30](/materials/bs/060a30 "060A30") | [1.0530](/materials/material-no/1.0530 "1.0530") | Others | 0.3–0.35 | 7 | | [060A30](/materials/bs/060a30 "060A30") | [1.1143](/materials/material-no/1.1143 "1.1143") | Quenched and tempered steels | 0.3–0.34 | 7 | | [060A30](/materials/bs/060a30 "060A30") | [1.1178](/materials/material-no/1.1178 "1.1178") | Quenched and tempered steels | 0.27–0.34 | 13 | | [060A30](/materials/bs/060a30 "060A30") | [1.1179](/materials/material-no/1.1179 "1.1179") | Quenched and tempered steels | 0.27–0.34 | 8 | | [060A30](/materials/bs/060a30 "060A30") | [1.9416](/materials/material-no/1.9416 "1.9416") | Quenched and tempered steels | 0.28–0.34 | 7 | | [060A35](/materials/bs/060a35 "060A35") | [1.0501](/materials/material-no/1.0501 "1.0501") | Quenched and tempered steels | 0.32–0.39 | 23 | | [060A35](/materials/bs/060a35 "060A35") | [1.1183](/materials/material-no/1.1183 "1.1183") | Steels for surface hardening | 0.33–0.39 | 7 | | [060A40](/materials/bs/060a40 "060A40") | [1.0511](/materials/material-no/1.0511 "1.0511") | Quenched and tempered steels | 0.37–0.44 | 21 | | [060A40](/materials/bs/060a40 "060A40") | [1.1153](/materials/material-no/1.1153 "1.1153") | Quenched and tempered steels | 0.38–0.42 | 6 | | [060A40](/materials/bs/060a40 "060A40") | [1.1186](/materials/material-no/1.1186 "1.1186") | Quenched and tempered steels | 0.37–0.44 | 16 | | [060A40](/materials/bs/060a40 "060A40") | [1.1189](/materials/material-no/1.1189 "1.1189") | Quenched and tempered steels | 0.37–0.44 | 8 | | [060A40](/materials/bs/060a40 "060A40") | [1.9502](/materials/material-no/1.9502 "1.9502") | Quenched and tempered steels | 0.37–0.44 | 5 | | [060A47](/materials/bs/060a47 "060A47") | [1.1191](/materials/material-no/1.1191 "1.1191") | Quenched and tempered steels | 0.42–0.5 | 21 | | [060A47](/materials/bs/060a47 "060A47") | [1.1191](/materials/material-no/1.1191 "1.1191") | Others | 0.42–0.5 | 18 | | [060A47](/materials/bs/060a47 "060A47") | [1.0503](/materials/material-no/1.0503 "1.0503") | Quenched and tempered steels | 0.42–0.5 | 24 | | [060A52](/materials/bs/060a52 "060A52") | [1.1213](/materials/material-no/1.1213 "1.1213") | Steels for surface hardening | 0.5–0.57 | 11 | | [060A52](/materials/bs/060a52 "060A52") | [1.1210](/materials/material-no/1.1210 "1.1210") | Steels for surface hardening | 0.5–0.57 | 8 | | [060A52](/materials/bs/060a52 "060A52") | [1.0535](/materials/material-no/1.0535 "1.0535") | Quenched and tempered steels | 0.52–0.6 | 21 | | [060A57](/materials/bs/060a57 "060A57") | [1.0535](/materials/material-no/1.0535 "1.0535") | Quenched and tempered steels | 0.52–0.6 | 21 | | [060A57](/materials/bs/060a57 "060A57") | [1.1203](/materials/material-no/1.1203 "1.1203") | Quenched and tempered steels | 0.52–0.6 | 15 | | [060A62](/materials/bs/060a62 "060A62") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [060A62](/materials/bs/060a62 "060A62") | [1.1221](/materials/material-no/1.1221 "1.1221") | Quenched and tempered steels | 0.57–0.65 | 18 | | [060A67](/materials/bs/060a67 "060A67") | [1.0612](/materials/material-no/1.0612 "1.0612") | Others | 0.63–0.68 | 12 | **This grade’s own name** — recorded in our sources as this grade’s own designation under that standard. **Indicative** — taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering. **Withdrawn** — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once. Page 1 of 31[Next](/materials/bs/page/2 "Next")