--- title: "BS steel grades — 1547 designations — Page 12" 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/page/12 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/bs/page/12.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: sha256:3273d30185a27ae8045cbba652735b767db943df02501bb24e64028e77f0b3ef generated: 2026-09-25 --- > **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/page/12 > Canonical URL: https://steelequivalents.com/materials/bs/page/12 > 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 — Page 12 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. Unless marked, every name here is an indicative cross-reference, not an asserted identity — the grades are close, not interchangeable. 1 of 50 rows differ and carry a “This grade’s own name” mark. ## Also known as 1547 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [3S132D](/materials/bs/3s132d "3S132D") | [1.8523](/materials/material-no/1.8523 "1.8523") | Nitriding steels | 0.35–0.45 | 3 | | [3S61](/materials/bs/3s61 "3S61") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [3S62](/materials/bs/3s62 "3S62") | [1.3541](/materials/material-no/1.3541 "1.3541") | Others | 0.43–0.5 | 9 | | [3T60](/materials/bs/3t60 "3T60") This grade’s own name | — | — | — | — | | [4 Ti](/materials/bs/4-ti "4 Ti") | [1.4571](/materials/material-no/1.4571 "1.4571") | Stainless steels | ≤ 0.08 | 18 | | [4 Ti](/materials/bs/4-ti "4 Ti") | [1.4573](/materials/material-no/1.4573 "1.4573") | Cast stainless steels | ≤ 0.04 | 12 | | [40/30](/materials/bs/40-30 "40/30") | [1.0973](/materials/material-no/1.0973 "1.0973") | Fine-grain steels for cold forming | ≤ 0.16 | 1 | | [400](/materials/bs/400 "400") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [400-22](/materials/bs/400-22 "400-22") | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [401S45](/materials/bs/401s45 "401S45") | [1.4718](/materials/material-no/1.4718 "1.4718") | Valve steels | 0.4–0.5 | 16 | | [401S45](/materials/bs/401s45 "401S45") | [1.4718](/materials/material-no/1.4718 "1.4718") | Others | 0.4–0.5 | 16 | | [401S45EN52](/materials/bs/401s45en52 "401S45EN52") | [1.4718](/materials/material-no/1.4718 "1.4718") | Valve steels | 0.4–0.5 | 16 | | [401S45EN52](/materials/bs/401s45en52 "401S45EN52") | [1.4718](/materials/material-no/1.4718 "1.4718") | Others | 0.4–0.5 | 16 | | [403 S17](/materials/bs/403s17 "403 S17") | — | — | — | 2 | | [403S17](/materials/bs/403s17 "403S17") | [1.4000](/materials/material-no/1.4000 "1.4000") | Stainless steels | ≤ 0.08 | 16 | | [403S17](/materials/bs/403s17 "403S17") | [1.4724](/materials/material-no/1.4724 "1.4724") | Heat resistant steels | ≤ 0.12 | 15 | | [403S17](/materials/bs/403s17 "403S17") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [403S17](/materials/bs/403s17 "403S17") | [1.4001](/materials/material-no/1.4001 "1.4001") | Stainless steels | ≤ 0.08 | 10 | | [403S17](/materials/bs/403s17 "403S17") | [1.4001](/materials/material-no/1.4001 "1.4001") | Others | ≤ 0.08 | 8 | | [405S17](/materials/bs/405s17 "405S17") | [1.4002](/materials/material-no/1.4002 "1.4002") | Stainless steels | ≤ 0.08 | 13 | | [405S17](/materials/bs/405s17 "405S17") | [1.4003](/materials/material-no/1.4003 "1.4003") | Stainless steels | ≤ 0.03 | 6 | | [409S](/materials/bs/409s "409S") | [1.4512](/materials/material-no/1.4512 "1.4512") | Stainless steels | ≤ 0.03 | 10 | | [409S19](/materials/bs/409s19 "409S19") | [1.4512](/materials/material-no/1.4512 "1.4512") | Stainless steels | ≤ 0.03 | 10 | | [40A](/materials/pn/40a "40A") | [1.0021](/materials/material-no/1.0021 "1.0021") | Unalloyed structural steels | ≤ 0.2 | 3 | | [40B](/materials/gb/40b "40B") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [40B](/materials/gb/40b "40B") | [1.8515](/materials/material-no/1.8515 "1.8515") | Nitriding steels | 0.28–0.35 | 8 | | [40B](/materials/gb/40b "40B") | [1.7361](/materials/material-no/1.7361 "1.7361") | Quenched and tempered steels | 0.28–0.35 | 7 | | [40C](/materials/bs/40c "40C") | [1.0114](/materials/material-no/1.0114 "1.0114") | Unalloyed structural steels | ≤ 0.17 | 21 | | [40C](/materials/bs/40c "40C") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [40C](/materials/bs/40c "40C") | [1.8523](/materials/material-no/1.8523 "1.8523") | Nitriding steels | 0.35–0.45 | 3 | | [40CrMnMo8](/materials/bs/40crmnmo8 "40CrMnMo8") | [1.2311](/materials/material-no/1.2311 "1.2311") | Tool steels for cold work | 0.35–0.45 | 12 | | [40D](/materials/bs/40d "40D") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [40EE](/materials/bs/40ee "40EE") | [1.0117](/materials/material-no/1.0117 "1.0117") | Unalloyed structural steels | ≤ 0.17 | 5 | | [40HS](/materials/bs/40hs "40HS") | [1.0501](/materials/material-no/1.0501 "1.0501") | Quenched and tempered steels | 0.32–0.39 | 23 | | [410C21](/materials/bs/410c21 "410C21") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [410C21](/materials/bs/410c21 "410C21") | [1.4008](/materials/material-no/1.4008 "1.4008") | Stainless steels | ≤ 0.1 | 5 | | [410C21 410S21 ANC 1A](/materials/bs/410c21-410s21-anc-1a "410C21 410S21 ANC 1A") | — | — | — | 3 | | [410S2](/materials/bs/410s2 "410S2") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [410S21](/materials/bs/410s21 "410S21") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [410S21](/materials/bs/410s21 "410S21") | [1.4005](/materials/material-no/1.4005 "1.4005") | Stainless steels | 0.08–0.15 | 14 | | [410S21](/materials/bs/410s21 "410S21") | [1.4024](/materials/material-no/1.4024 "1.4024") | Stainless steels | 0.12–0.17 | 13 | | [416S21](/materials/bs/416s21 "416S21") | [1.4005](/materials/material-no/1.4005 "1.4005") | Stainless steels | 0.08–0.15 | 14 | | [41B](/materials/bs/41b "41B") | [1.8509](/materials/material-no/1.8509 "1.8509") | Nitriding steels | 0.38–0.45 | 16 | | [41Cr4](/materials/din-en/41cr4 "41Cr4") | [1.7034](/materials/material-no/1.7034 "1.7034") | Quenched and tempered steels | 0.34–0.41 | 23 | | [420 S 29](/materials/bs/420s29 "420 S 29") | [1.4024](/materials/material-no/1.4024 "1.4024") | Stainless steels | 0.12–0.17 | 13 | | [420 S 37 En56C](/materials/bs/420-s-37-en56c "420 S 37 En56C") | [1.4021](/materials/material-no/1.4021 "1.4021") | Stainless steels | 0.16–0.25 | 18 | | [420 S 45](/materials/bs/420s45 "420 S 45") | [1.4028](/materials/material-no/1.4028 "1.4028") | Stainless steels | 0.26–0.35 | 18 | | [420 S 45 En56D](/materials/bs/420-s-45-en56d "420 S 45 En56D") | [1.4028](/materials/material-no/1.4028 "1.4028") | Stainless steels | 0.26–0.35 | 18 | | [420-12](/materials/bs/420-12 "420-12") | [EN-JS1030](/materials/material-no/en-js1030 "EN-JS1030") | Others | — | 17 | | [420-12](/materials/bs/420-12 "420-12") | [EN-JS1072](/materials/material-no/en-js1072 "EN-JS1072") | Others | — | 17 | **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. [Previous](/materials/bs/page/11 "Previous") Page 12 of 31[Next](/materials/bs/page/13 "Next")