--- title: "BS steel grades — 1547 designations — Page 4" 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/4 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/bs/page/4.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: sha256:2b78b3e6b8b1729248eeba5f3da1241a22731532dacb71f504d6f3da397c627c 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/4 > Canonical URL: https://steelequivalents.com/materials/bs/page/4 > 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 4 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 | |---|---|---|---|---| | [1449-40CS](/materials/bs/1449-40cs "1449-40CS") | [1.0501](/materials/material-no/1.0501 "1.0501") | Quenched and tempered steels | 0.32–0.39 | 23 | | [1449-43/25HR](/materials/bs/1449-43-25hr "1449-43/25HR") | [1.0044](/materials/material-no/1.0044 "1.0044") | Unalloyed structural steels | ≤ 0.21 | 26 | | [1449-4HR](/materials/bs/1449-4hr "1449-4HR") | [1.0332](/materials/material-no/1.0332 "1.0332") | Unalloyed structural steels | ≤ 0.12 | 16 | | [1449-50/35HR](/materials/bs/1449-50-35hr "1449-50/35HR") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [1449-50/35HR](/materials/bs/1449-50-35hr "1449-50/35HR") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [1449-50/35HS](/materials/bs/1449-50-35hs "1449-50/35HS") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [1449-50/35HS](/materials/bs/1449-50-35hs "1449-50/35HS") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [1449-50CS](/materials/bs/1449-50cs "1449-50CS") | [1.0503](/materials/material-no/1.0503 "1.0503") | Quenched and tempered steels | 0.42–0.5 | 24 | | [1449-50HS](/materials/bs/1449-50hs "1449-50HS") | [1.0503](/materials/material-no/1.0503 "1.0503") | Quenched and tempered steels | 0.42–0.5 | 24 | | [1449-CS](/materials/bs/1449-cs "1449-CS") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [1449-HS](/materials/bs/1449-hs "1449-HS") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [14A](/materials/bs/14a "14A") | [1.1170](/materials/material-no/1.1170 "1.1170") | Quenched and tempered steels | 0.25–0.32 | 16 | | [14HR](/materials/bs/14hr "14HR") | [1.0334](/materials/material-no/1.0334 "1.0334") | Unalloyed structural steels | ≤ 0.1 | 11 | | [14HR](/materials/bs/14hr "14HR") | [1.0332](/materials/material-no/1.0332 "1.0332") | Unalloyed structural steels | ≤ 0.12 | 16 | | [150](/materials/bs/150 "150") | [EN-JL1020](/materials/material-no/en-jl1020 "EN-JL1020") | Others | — | 22 | | [1501](/materials/bs/1501 "1501") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [1501 Gr. 161-360](/materials/bs/1501-gr-161-360 "1501 Gr. 161-360") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [1501-240](/materials/bs/1501-240 "1501-240") | [1.5415](/materials/material-no/1.5415 "1.5415") | Heat-resistant structural steels | 0.12–0.2 | 15 | | [1501-503-690](/materials/bs/1501-503-690 "1501-503-690") | [1.5637](/materials/material-no/1.5637 "1.5637") | Low-temperature structural steels | ≤ 0.15 | 11 | | [1501-509](/materials/bs/1501-509 "1501-509") | [1.5662](/materials/material-no/1.5662 "1.5662") | Low-temperature structural steels | ≤ 0.1 | 8 | | [1501-509](/materials/bs/1501-509 "1501-509") | [1.5662](/materials/material-no/1.5662 "1.5662") | Low-temperature structural steels | ≤ 0.1 | 6 | | [1501-509-510](/materials/bs/1501-509-510 "1501-509-510") | [1.5662](/materials/material-no/1.5662 "1.5662") | Low-temperature structural steels | ≤ 0.1 | 8 | | [1501-509-510](/materials/bs/1501-509-510 "1501-509-510") | [1.5662](/materials/material-no/1.5662 "1.5662") | Low-temperature structural steels | ≤ 0.1 | 6 | | [1501-620](/materials/bs/1501-620 "1501-620") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [1501-620](/materials/bs/1501-620 "1501-620") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [1501-620Gr27](/materials/bs/1501-620gr27 "1501-620Gr27") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [1501-621](/materials/bs/1501-621 "1501-621") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [1501-621](/materials/bs/1501-621 "1501-621") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [1501-622](/materials/bs/1501-622 "1501-622") | [1.7380](/materials/material-no/1.7380 "1.7380") | Heat-resistant structural steels | 0.08–0.14 | 20 | | [1501-622 Gr31](/materials/bs/1501-622-gr31 "1501-622 Gr31") | [1.7380](/materials/material-no/1.7380 "1.7380") | Heat-resistant structural steels | 0.08–0.14 | 20 | | [1501Gr.161-400](/materials/bs/1501gr-161-400 "1501Gr.161-400") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [1501Gr.164-360](/materials/bs/1501gr-164-360 "1501Gr.164-360") | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [1503-243B](/materials/bs/1503-243b "1503-243B") | [1.5415](/materials/material-no/1.5415 "1.5415") | Heat-resistant structural steels | 0.12–0.2 | 15 | | [1503-245-420](/materials/bs/1503-245-420 "1503-245-420") | [1.5423](/materials/material-no/1.5423 "1.5423") | Heat-resistant structural steels | 0.12–0.2 | 5 | | [1503-660-440](/materials/bs/1503-660-440 "1503-660-440") | [1.7715](/materials/material-no/1.7715 "1.7715") | Heat-resistant structural steels | 0.1–0.18 | 8 | | [150H19](/materials/bs/150h19 "150H19") | [1.1170](/materials/material-no/1.1170 "1.1170") | Quenched and tempered steels | 0.25–0.32 | 16 | | [150M19](/materials/bs/150m19 "150M19") | [1.1170](/materials/material-no/1.1170 "1.1170") | Quenched and tempered steels | 0.25–0.32 | 16 | | [150M19](/materials/bs/150m19 "150M19") | [1.0841](/materials/material-no/1.0841 "1.0841") | Unalloyed structural steels | — | 6 | | [150M19](/materials/bs/150m19 "150M19") | [1.1133](/materials/material-no/1.1133 "1.1133") | Quenched and tempered steels | 0.17–0.23 | 20 | | [150M28](/materials/bs/150m28 "150M28") | [1.1170](/materials/material-no/1.1170 "1.1170") | Quenched and tempered steels | 0.25–0.32 | 16 | | [150M28](/materials/bs/150m28 "150M28") | [1.1173](/materials/material-no/1.1173 "1.1173") | Quenched and tempered steels | 0.27–0.34 | 7 | | [150M28](/materials/bs/150m28 "150M28") | [1.1165](/materials/material-no/1.1165 "1.1165") | Quenched and tempered steels | 0.25–0.32 | 16 | | [150M36](/materials/bs/150m36 "150M36") | [1.1157](/materials/material-no/1.1157 "1.1157") | Quenched and tempered steels | 0.36–0.44 | 9 | | [150M36](/materials/bs/150m36 "150M36") | [1.1127](/materials/material-no/1.1127 "1.1127") | Quenched and tempered steels | 0.34–0.42 | 6 | | [150M36](/materials/bs/150m36 "150M36") | [1.1167](/materials/material-no/1.1167 "1.1167") | Quenched and tempered steels | 0.32–0.4 | 17 | | [150M36](/materials/bs/150m36 "150M36") | [1.1165](/materials/material-no/1.1165 "1.1165") | Quenched and tempered steels | 0.25–0.32 | 16 | | [151-400](/materials/bs/151-400 "151-400") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [151-400](/materials/bs/151-400 "151-400") | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [151-430](/materials/bs/151-430 "151-430") | [1.0436](/materials/material-no/1.0436 "1.0436") | Fine-grain structural steels | 0.15–0.2 | 14 | | [154-400](/materials/bs/154-400 "154-400") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | **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/3 "Previous") Page 4 of 31[Next](/materials/bs/page/5 "Next")