--- title: "ČSN steel grades — 647 designations — Page 9" description: "Steel grades designated under ČSN, with chemical composition, mechanical properties and equivalents in other standards. 647 designations across 451…" canonical: https://steelequivalents.com/materials/csn/page/9 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/csn/page/9.md cs: https://steelequivalents.com/cs/materiály/csn.md de: https://steelequivalents.com/de/werkstoffe/csn.md es: https://steelequivalents.com/es/materiales/csn.md fr: https://steelequivalents.com/fr/matériaux/csn.md hu: https://steelequivalents.com/hu/anyagok/csn.md it: https://steelequivalents.com/it/materiali/csn.md nl: https://steelequivalents.com/nl/materialen/csn.md pl: https://steelequivalents.com/pl/materiały/csn.md pt: https://steelequivalents.com/pt/materiais/csn.md ru: https://steelequivalents.com/ru/материалы/csn.md tr: https://steelequivalents.com/tr/malzemeler/csn.md zh: https://steelequivalents.com/zh/材料/csn.md ja: https://steelequivalents.com/ja/材料/csn.md ar: https://steelequivalents.com/ar/المواد/csn.md ko: https://steelequivalents.com/ko/재료/csn.md pt-br: https://steelequivalents.com/pt-br/materiais/csn.md hi: https://steelequivalents.com/hi/सामग्री/csn.md content_hash: sha256:f213e81bc19748515e02748c384467d1fee1eb73dc645b8cbd9b88047d1e32c9 generated: 2026-09-24 --- > **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/csn/page/9 > Canonical URL: https://steelequivalents.com/materials/csn/page/9 > 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. ČSN · 647 grades # ČSN steel grades — 647 designations — Page 9 Every grade designated under ČSN, 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 647 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [17134](/materials/csn/17134 "17134") | [1.4923](/materials/material-no/1.4923 "1.4923") | High-temperature steels | 0.18–0.24 | 5 | | [17134](/materials/csn/17134 "17134") | [1.4122](/materials/material-no/1.4122 "1.4122") | Stainless steels | 0.33–0.45 | 5 | | [17134](/materials/csn/17134 "17134") | [1.4122](/materials/material-no/1.4122 "1.4122") | Stainless steels | 0.33–0.43 | 5 | | [17136](/materials/csn/17136 "17136") | [1.4116](/materials/material-no/1.4116 "1.4116") | Stainless steels | 0.45–0.55 | 6 | | [17137](/materials/csn/17137 "17137") | [1.4122](/materials/material-no/1.4122 "1.4122") | Stainless steels | 0.33–0.45 | 5 | | [17137](/materials/csn/17137 "17137") | [1.4122](/materials/material-no/1.4122 "1.4122") | Stainless steels | 0.33–0.43 | 5 | | [17140](/materials/csn/17140 "17140") | [1.4104](/materials/material-no/1.4104 "1.4104") | Stainless steels | 0.1–0.17 | 13 | | [17145](/materials/csn/17145 "17145") | [1.4057](/materials/material-no/1.4057 "1.4057") | Stainless steels | 0.12–0.22 | 17 | | [17145PH](/materials/csn/17145ph "17145PH") | [1.4057](/materials/material-no/1.4057 "1.4057") | Stainless steels | 0.12–0.22 | 17 | | [17150VN](/materials/csn/17150vn "17150VN") | [1.4057](/materials/material-no/1.4057 "1.4057") | Stainless steels | 0.12–0.22 | 17 | | [17151](/materials/csn/17151 "17151") | [1.4112](/materials/material-no/1.4112 "1.4112") | Stainless steels | 0.85–0.95 | 13 | | [17151xx](/materials/csn/17151xx "17151xx") This grade’s own name | — | — | — | — | | [17153](/materials/csn/17153 "17153") | [1.4773](/materials/material-no/1.4773 "1.4773") | Heat resistant steels | ≤ 0.09 | 4 | | [17153](/materials/csn/17153 "17153") | [1.4762](/materials/material-no/1.4762 "1.4762") | Heat resistant steels | ≤ 0.12 | 12 | | [17153](/materials/csn/17153 "17153") | [1.4746](/materials/material-no/1.4746 "1.4746") | Others | ≤ 0.12 | 8 | | [17240](/materials/csn/17240 "17240") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [17241](/materials/csn/17241 "17241") | [1.4310](/materials/material-no/1.4310 "1.4310") | Stainless steels | 0.05–0.15 | 18 | | [17241](/materials/csn/17241 "17241") | [1.4300](/materials/material-no/1.4300 "1.4300") | Stainless steels | ≤ 0.12 | 15 | | [17242](/materials/csn/17242 "17242") | [1.4310](/materials/material-no/1.4310 "1.4310") | Stainless steels | 0.05–0.15 | 18 | | [17243](/materials/csn/17243 "17243") | [1.4305](/materials/material-no/1.4305 "1.4305") | Stainless steels | ≤ 0.1 | 17 | | [17246](/materials/csn/17246 "17246") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [17246](/materials/csn/17246 "17246") | [1.6903](/materials/material-no/1.6903 "1.6903") | Low-temperature steels | ≤ 0.1 | 2 | | [17247](/materials/csn/17247 "17247") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [17248](/materials/csn/17248 "17248") | [1.4878](/materials/material-no/1.4878 "1.4878") | Heat resistant steels | ≤ 0.1 | 14 | | [17248](/materials/csn/17248 "17248") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [17249](/materials/csn/17249 "17249") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [17251](/materials/csn/17251 "17251") | [1.4828](/materials/material-no/1.4828 "1.4828") | Heat resistant steels | ≤ 0.2 | 20 | | [17253](/materials/csn/17253 "17253") | [1.4886](/materials/material-no/1.4886 "1.4886") | Others | ≤ 0.15 | 11 | | [17253](/materials/csn/17253 "17253") | [1.4884](/materials/material-no/1.4884 "1.4884") | Others | ≤ 0.08 | 5 | | [17255](/materials/csn/17255 "17255") | [1.4841](/materials/material-no/1.4841 "1.4841") | Heat resistant steels | ≤ 0.2 | 17 | | [17255](/materials/csn/17255 "17255") | [1.4845](/materials/material-no/1.4845 "1.4845") | Heat resistant steels | ≤ 0.1 | 21 | | [17256VN](/materials/csn/17256vn "17256VN") | [1.4828](/materials/material-no/1.4828 "1.4828") | Heat resistant steels | ≤ 0.2 | 20 | | [17259VN](/materials/csn/17259vn "17259VN") | [1.4311](/materials/material-no/1.4311 "1.4311") | Stainless steels | ≤ 0.03 | 13 | | [17265](/materials/csn/17265 "17265") | [1.4841](/materials/material-no/1.4841 "1.4841") | Heat resistant steels | ≤ 0.2 | 17 | | [17265PH](/materials/csn/17265ph "17265PH") | [1.4841](/materials/material-no/1.4841 "1.4841") | Heat resistant steels | ≤ 0.2 | 17 | | [17287](/materials/csn/17287 "17287") | [1.4307](/materials/material-no/1.4307 "1.4307") | Stainless steels | ≤ 0.03 | 14 | | [17341](/materials/csn/17341 "17341") | [1.4919](/materials/material-no/1.4919 "1.4919") | High-temperature steels | 0.04–0.08 | 7 | | [17342](/materials/csn/17342 "17342") | [1.4539](/materials/material-no/1.4539 "1.4539") | Stainless steels | ≤ 0.02 | 10 | | [17346](/materials/csn/17346 "17346") | [1.4401](/materials/material-no/1.4401 "1.4401") | Stainless steels | ≤ 0.07 | 20 | | [17346](/materials/csn/17346 "17346") | [1.4404](/materials/material-no/1.4404 "1.4404") | Stainless steels | ≤ 0.03 | 25 | | [17347](/materials/csn/17347 "17347") | [1.4571](/materials/material-no/1.4571 "1.4571") | Stainless steels | ≤ 0.08 | 18 | | [17347PH](/materials/csn/17347ph "17347PH") | [1.4571](/materials/material-no/1.4571 "1.4571") | Stainless steels | ≤ 0.08 | 18 | | [17348](/materials/csn/17348 "17348") | [1.4571](/materials/material-no/1.4571 "1.4571") | Stainless steels | ≤ 0.08 | 18 | | [17349](/materials/csn/17349 "17349") | [1.4404](/materials/material-no/1.4404 "1.4404") | Stainless steels | ≤ 0.03 | 25 | | [17349](/materials/csn/17349 "17349") | [1.4435](/materials/material-no/1.4435 "1.4435") | Stainless steels | ≤ 0.03 | 20 | | [17350](/materials/csn/17350 "17350") | [1.4435](/materials/material-no/1.4435 "1.4435") | Stainless steels | ≤ 0.03 | 20 | | [17350](/materials/csn/17350 "17350") | [1.4439](/materials/material-no/1.4439 "1.4439") | Stainless steels | ≤ 0.03 | 8 | | [17350](/materials/csn/17350 "17350") | [1.4404](/materials/material-no/1.4404 "1.4404") | Stainless steels | ≤ 0.03 | 25 | | [17352](/materials/csn/17352 "17352") | [1.4436](/materials/material-no/1.4436 "1.4436") | Stainless steels | ≤ 0.05 | 19 | | [17353](/materials/csn/17353 "17353") | [1.4573](/materials/material-no/1.4573 "1.4573") | Cast stainless steels | ≤ 0.04 | 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. [Previous](/materials/csn/page/8 "Previous") Page 9 of 13[Next](/materials/csn/page/10 "Next")