--- title: "BS steel grades — 1547 designations — Page 5" 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/5 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/bs/page/5.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:c46f1b4dfccb99e0c1f7fb90c7777385fbb3fd62cd1ee25e0f23ee42bf6a2596 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/page/5 > Canonical URL: https://steelequivalents.com/materials/bs/page/5 > 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 5 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 | |---|---|---|---|---| | [15HR](/materials/bs/15hr "15HR") | [1.0035](/materials/material-no/1.0035 "1.0035") | Unalloyed structural steels | — | 22 | | [15HS](/materials/bs/15hs "15HS") | [1.0035](/materials/material-no/1.0035 "1.0035") | Unalloyed structural steels | — | 22 | | [161-360](/materials/bs/161-360 "161-360") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [161-400](/materials/bs/161-400 "161-400") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [161-430](/materials/bs/161-430 "161-430") | [1.0044](/materials/material-no/1.0044 "1.0044") | Unalloyed structural steels | ≤ 0.21 | 26 | | [161-430](/materials/bs/161-430 "161-430") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [161-430](/materials/bs/161-430 "161-430") | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [161-430](/materials/bs/161-430 "161-430") | [1.0436](/materials/material-no/1.0436 "1.0436") | Fine-grain structural steels | 0.15–0.2 | 14 | | [161-430](/materials/bs/161-430 "161-430") | [1.0443](/materials/material-no/1.0443 "1.0443") | Others | ≤ 0.11 | 13 | | [161-430A](/materials/bs/161-430a "161-430A") | [1.0443](/materials/material-no/1.0443 "1.0443") | Others | ≤ 0.11 | 13 | | [161-480](/materials/bs/161-480 "161-480") | [1.0552](/materials/material-no/1.0552 "1.0552") | Others | ≤ 0.25 | 13 | | [161Gr.360](/materials/bs/161gr-360 "161Gr.360") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [161Gr.400](/materials/bs/161gr-400 "161Gr.400") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [161Gr400A](/materials/bs/161gr400a "161Gr400A") | [1.0551](/materials/material-no/1.0551 "1.0551") | Unalloyed structural steels | ≤ 0.24 | 10 | | [164-360](/materials/bs/164-360 "164-360") | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [164-360B-LT20](/materials/bs/164-360b-lt20 "164-360B-LT20") | [1.0112](/materials/material-no/1.0112 "1.0112") | Unalloyed structural steels | ≤ 0.16 | 5 | | [164-400B-LT20](/materials/bs/164-400b-lt20 "164-400B-LT20") | [1.0130](/materials/material-no/1.0130 "1.0130") | Unalloyed structural steels | ≤ 0.2 | 4 | | [1645](/materials/bs/1645 "1645") | [1.1645](/materials/material-no/1.1645 "1.1645") | Unalloyed tool steels / carbon steels | 1–1.1 | 18 | | [164Gr.400](/materials/bs/164gr-400 "164Gr.400") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [1653](/materials/bs/1653 "1653") | [1.7337](/materials/material-no/1.7337 "1.7337") | Heat-resistant structural steels | 0.13–0.2 | 9 | | [16MnCr5](/materials/din-en/16mncr5 "16MnCr5") | [1.7131](/materials/material-no/1.7131 "1.7131") | Case hardening steels | 0.14–0.19 | 24 | | [170H20](/materials/bs/170h20 "170H20") | [1.5530](/materials/material-no/1.5530 "1.5530") | Quenched and tempered steels | 0.17–0.23 | 2 | | [170H41](/materials/bs/170h41 "170H41") | [1.5532](/materials/material-no/1.5532 "1.5532") | Quenched and tempered steels | 0.36–0.42 | 2 | | [1717CDS110](/materials/bs/1717cds110 "1717CDS110") | [1.7218](/materials/material-no/1.7218 "1.7218") | Quenched and tempered steels | 0.22–0.29 | 25 | | [1717COS110](/materials/bs/1717cos110 "1717COS110") | [1.7214](/materials/material-no/1.7214 "1.7214") | Special steels for aviation and aerospace | 0.22–0.29 | 9 | | [1717COS110](/materials/bs/1717cos110 "1717COS110") | [1.7216](/materials/material-no/1.7216 "1.7216") | Low-temperature structural steels | 0.27–0.34 | 9 | | [1717COS110](/materials/bs/1717cos110 "1717COS110") | [1.7220](/materials/material-no/1.7220 "1.7220") | Quenched and tempered steels | 0.3–0.37 | 24 | | [1717COS110](/materials/bs/1717cos110 "1717COS110") | [1.7230](/materials/material-no/1.7230 "1.7230") | Others | 0.3–0.37 | 8 | | [17Cr](/materials/bs/17cr "17Cr") | [1.4016](/materials/material-no/1.4016 "1.4016") | Stainless steels | ≤ 0.08 | 18 | | [17Cr3](/materials/din-en/17cr3 "17Cr3") | [1.7015](/materials/material-no/1.7015 "1.7015") | Case hardening steels | 0.12–0.18 | 15 | | [17CrS3](/materials/din-en/17crs3 "17CrS3") | [1.7016](/materials/material-no/1.7016 "1.7016") | Case hardening steels | 0.14–0.2 | 11 | | [185H40](/materials/bs/185h40 "185H40") | [1.7189](/materials/material-no/1.7189 "1.7189") | Quenched and tempered steels | 0.36–0.42 | 1 | | [18B](/materials/bs/18b "18B") | [1.7033](/materials/material-no/1.7033 "1.7033") | Quenched and tempered steels | 0.3–0.37 | 18 | | [18C](/materials/bs/18c "18C") | [1.7033](/materials/material-no/1.7033 "1.7033") | Quenched and tempered steels | 0.3–0.37 | 18 | | [19A](/materials/bs/19a "19A") | [1.7223](/materials/material-no/1.7223 "1.7223") | Steels for surface hardening | 0.38–0.44 | 13 | | [19A](/materials/bs/19a "19A") | [1.7225](/materials/material-no/1.7225 "1.7225") | Quenched and tempered steels | 0.38–0.45 | 25 | | [19B](/materials/bs/19b "19B") | [1.7220](/materials/material-no/1.7220 "1.7220") | Quenched and tempered steels | 0.3–0.37 | 24 | | [1A](/materials/aisi-sae/1a "1A") | [1.0715](/materials/material-no/1.0715 "1.0715") | Free cutting steels | ≤ 0.14 | 14 | | [1B](/materials/bs/1b "1B") | [1.0736](/materials/material-no/1.0736 "1.0736") | Free cutting steels | ≤ 0.14 | 11 | | [1C22](/materials/bs/1c22 "1C22") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [1C25](/materials/bs/1c25 "1C25") | [1.0406](/materials/material-no/1.0406 "1.0406") | Quenched and tempered steels | 0.22–0.29 | 20 | | [1CR](/materials/bs/1cr "1CR") | [1.0338](/materials/material-no/1.0338 "1.0338") | Unalloyed structural steels | ≤ 0.08 | 18 | | [1CR](/materials/bs/1cr "1CR") | [1.0314](/materials/material-no/1.0314 "1.0314") | Unalloyed structural steels | ≤ 0.03 | 14 | | [1CS](/materials/bs/1cs "1CS") | [1.0338](/materials/material-no/1.0338 "1.0338") | Unalloyed structural steels | ≤ 0.08 | 18 | | [1HR](/materials/bs/1hr "1HR") | [1.0338](/materials/material-no/1.0338 "1.0338") | Unalloyed structural steels | ≤ 0.08 | 18 | | [1HR](/materials/bs/1hr "1HR") | [1.0322](/materials/material-no/1.0322 "1.0322") | Unalloyed structural steels | ≤ 0.12 | 17 | | [1HS](/materials/bs/1hs "1HS") | [1.0338](/materials/material-no/1.0338 "1.0338") | Unalloyed structural steels | ≤ 0.08 | 18 | | [2 1](/materials/bs/2-1 "2 1") | [1.4571](/materials/material-no/1.4571 "1.4571") | Stainless steels | ≤ 0.08 | 18 | | [2 1](/materials/bs/2-1 "2 1") | [1.4573](/materials/material-no/1.4573 "1.4573") | Cast stainless steels | ≤ 0.04 | 12 | | [2 S.130](/materials/bs/2s130 "2 S.130") | [1.4546](/materials/material-no/1.4546 "1.4546") | Special steels for aviation and aerospace | ≤ 0.08 | 5 | **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/4 "Previous") Page 5 of 31[Next](/materials/bs/page/6 "Next")