--- title: "ČSN steel grades — 647 designations — Page 8" 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/8 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/csn/page/8.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: sha256:557c8589104512cfadd4c4d41aabf74d9c02f0707b20aefc451efe46eed5bb73 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/csn/page/8 > Canonical URL: https://steelequivalents.com/materials/csn/page/8 > 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 8 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 | |---|---|---|---|---| | [17 020](/materials/csn/17020 "17 020") | [1.4009](/materials/material-no/1.4009 "1.4009") | Others | ≤ 0.09 | 3 | | [17 022](/materials/csn/17022 "17 022") | [1.2082](/materials/material-no/1.2082 "1.2082") | Tool steels for hot work | 0.17–0.22 | 2 | | [17 023](/materials/csn/17023 "17 023") | [1.4007](/materials/material-no/1.4007 "1.4007") | Others | 0.3–0.4 | 1 | | [17 029](/materials/csn/17029 "17 029") | [1.4034](/materials/material-no/1.4034 "1.4034") | Stainless steels | 0.43–0.5 | 18 | | [17 041](/materials/csn/17041 "17 041") | [1.4013](/materials/material-no/1.4013 "1.4013") | Others | ≤ 0.1 | 2 | | [17 134](/materials/csn/17134 "17 134") | [1.4120](/materials/material-no/1.4120 "1.4120") | Stainless steels | 0.17–0.22 | 3 | | [17 134](/materials/csn/17134 "17 134") | [1.4922](/materials/material-no/1.4922 "1.4922") | High-temperature steels | 0.17–0.23 | 7 | | [17 242](/materials/csn/17242 "17 242") | [1.4300](/materials/material-no/1.4300 "1.4300") | Stainless steels | ≤ 0.12 | 15 | | [17 243 PH](/materials/csn/17-243-ph "17 243 PH") | [1.4305](/materials/material-no/1.4305 "1.4305") | Stainless steels | ≤ 0.1 | 17 | | [17 246](/materials/csn/17246 "17 246") | [1.4878](/materials/material-no/1.4878 "1.4878") | Heat resistant steels | ≤ 0.1 | 14 | | [17 253](/materials/csn/17253 "17 253") | [1.4864](/materials/material-no/1.4864 "1.4864") | Heat resistant steels | ≤ 0.15 | 14 | | [17 255](/materials/csn/17255 "17 255") | [1.4842](/materials/material-no/1.4842 "1.4842") | Others | ≤ 0.14 | 14 | | [17 322](/materials/csn/17-322 "17 322") | [1.4873](/materials/material-no/1.4873 "1.4873") | Valve steels | 0.4–0.5 | 11 | | [17 348](/materials/csn/17348 "17 348") | [1.4547](/materials/material-no/1.4547 "1.4547") | Stainless steels | ≤ 0.02 | 7 | | [17 435](/materials/csn/17-435 "17 435") | [1.3817](/materials/material-no/1.3817 "1.3817") | Non-magnetic steels | 0.3–0.5 | 1 | | [17 460](/materials/csn/17460 "17 460") | [1.3965](/materials/material-no/1.3965 "1.3965") | Non-magnetic steels | ≤ 0.1 | 9 | | [17 536](/materials/csn/17536 "17 536") | [1.3910](/materials/material-no/1.3910 "1.3910") | Others | ≤ 0.05 | 1 | | [17 536](/materials/csn/17536 "17 536") | [1.3912](/materials/material-no/1.3912 "1.3912") | Controlled-expansion nickel-iron alloys | — | 4 | | [17 XXX](/materials/csn/17-xxx "17 XXX") | [1.4767](/materials/material-no/1.4767 "1.4767") | Resistance heating alloys | ≤ 0.1 | 1 | | [17 XXX NN](/materials/csn/17-xxx-nn "17 XXX NN") | [1.4550](/materials/material-no/1.4550 "1.4550") | Stainless steels | ≤ 0.08 | 15 | | [17 XXX NN](/materials/csn/17-xxx-nn "17 XXX NN") | [1.4057](/materials/material-no/1.4057 "1.4057") | Stainless steels | 0.12–0.22 | 17 | | [17 XXX NN](/materials/csn/17-xxx-nn "17 XXX NN") | [1.4420](/materials/material-no/1.4420 "1.4420") | Others | ≤ 0.07 | 1 | | [17020](/materials/csn/17020 "17020") | [1.4001](/materials/material-no/1.4001 "1.4001") | Stainless steels | ≤ 0.08 | 10 | | [17020](/materials/csn/17020 "17020") | [1.4001](/materials/material-no/1.4001 "1.4001") | Others | ≤ 0.08 | 8 | | [17020](/materials/csn/17020 "17020") | [1.4000](/materials/material-no/1.4000 "1.4000") | Stainless steels | ≤ 0.08 | 16 | | [17021](/materials/csn/17021 "17021") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [17021](/materials/csn/17021 "17021") | [1.4024](/materials/material-no/1.4024 "1.4024") | Stainless steels | 0.12–0.17 | 13 | | [17022](/materials/csn/17022 "17022") | [1.4021](/materials/material-no/1.4021 "1.4021") | Stainless steels | 0.16–0.25 | 18 | | [17022](/materials/csn/17022 "17022") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [17023](/materials/csn/17023 "17023") | [1.4028](/materials/material-no/1.4028 "1.4028") | Stainless steels | 0.26–0.35 | 18 | | [17024](/materials/csn/17024 "17024") | [1.2083](/materials/material-no/1.2083 "1.2083") | Tool steels for cold work | 0.36–0.42 | 16 | | [17024](/materials/csn/17024 "17024") | [1.4031](/materials/material-no/1.4031 "1.4031") | Stainless steels | 0.36–0.42 | 18 | | [17029](/materials/csn/17029 "17029") | [1.3541](/materials/material-no/1.3541 "1.3541") | Others | 0.43–0.5 | 9 | | [17029](/materials/csn/17029 "17029") | [1.2083](/materials/material-no/1.2083 "1.2083") | Tool steels for cold work | 0.36–0.42 | 16 | | [17031](/materials/csn/17031 "17031") | [1.4015](/materials/material-no/1.4015 "1.4015") | Others | ≤ 0.1 | 6 | | [17040](/materials/csn/17040 "17040") | [1.4016](/materials/material-no/1.4016 "1.4016") | Stainless steels | ≤ 0.08 | 18 | | [17041](/materials/csn/17041 "17041") | [1.4017](/materials/material-no/1.4017 "1.4017") | Others | ≤ 0.08 | 3 | | [17041](/materials/csn/17041 "17041") | [1.4016](/materials/material-no/1.4016 "1.4016") | Stainless steels | ≤ 0.08 | 18 | | [17041](/materials/csn/17041 "17041") | [1.4510](/materials/material-no/1.4510 "1.4510") | Stainless steels | ≤ 0.05 | 14 | | [17042](/materials/csn/17042 "17042") | [1.4112](/materials/material-no/1.4112 "1.4112") | Stainless steels | 0.85–0.95 | 13 | | [17042](/materials/csn/17042 "17042") | [1.4125](/materials/material-no/1.4125 "1.4125") | Stainless steels | 0.95–1.2 | 11 | | [17102](/materials/csn/17102 "17102") | [1.7390](/materials/material-no/1.7390 "1.7390") | Others | ≤ 0.18 | 3 | | [17102](/materials/csn/17102 "17102") | [1.7362](/materials/material-no/1.7362 "1.7362") | Hydrogen resistant steels | 0.1–0.15 | 13 | | [17113](/materials/csn/17113 "17113") | [1.4713](/materials/material-no/1.4713 "1.4713") | Heat resistant steels | ≤ 0.12 | 7 | | [17115](/materials/csn/17115 "17115") | [1.4718](/materials/material-no/1.4718 "1.4718") | Valve steels | 0.4–0.5 | 16 | | [17115](/materials/csn/17115 "17115") | [1.4718](/materials/material-no/1.4718 "1.4718") | Others | 0.4–0.5 | 16 | | [17116](/materials/csn/17116 "17116") | [1.7386](/materials/material-no/1.7386 "1.7386") | Hydrogen resistant steels | 0.08–0.15 | 6 | | [17119](/materials/csn/17119 "17119") This grade’s own name | — | — | — | — | | [17125](/materials/csn/17125 "17125") | [1.4724](/materials/material-no/1.4724 "1.4724") | Heat resistant steels | ≤ 0.12 | 15 | | [17125](/materials/csn/17125 "17125") | [1.4002](/materials/material-no/1.4002 "1.4002") | Stainless steels | ≤ 0.08 | 13 | **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/7 "Previous") Page 8 of 13[Next](/materials/csn/page/9 "Next")