--- title: "SS steel grades — 373 designations — Page 8" description: "Steel grades designated under SS, with chemical composition, mechanical properties and equivalents in other standards. 373 designations across 242…" canonical: https://steelequivalents.com/materials/ss/page/8 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/ss/page/8.md cs: https://steelequivalents.com/cs/materiály/ss.md de: https://steelequivalents.com/de/werkstoffe/ss.md es: https://steelequivalents.com/es/materiales/ss.md fr: https://steelequivalents.com/fr/matériaux/ss.md hu: https://steelequivalents.com/hu/anyagok/ss.md it: https://steelequivalents.com/it/materiali/ss.md nl: https://steelequivalents.com/nl/materialen/ss.md pl: https://steelequivalents.com/pl/materiały/ss.md pt: https://steelequivalents.com/pt/materiais/ss.md ru: https://steelequivalents.com/ru/материалы/ss.md tr: https://steelequivalents.com/tr/malzemeler/ss.md zh: https://steelequivalents.com/zh/材料/ss.md ja: https://steelequivalents.com/ja/材料/ss.md ar: https://steelequivalents.com/ar/المواد/ss.md ko: https://steelequivalents.com/ko/재료/ss.md pt-br: https://steelequivalents.com/pt-br/materiais/ss.md hi: https://steelequivalents.com/hi/सामग्री/ss.md content_hash: sha256:6c149693a6b780c2d7277e960cee422cdf05c0eb72f634827d0ac36cc48b90cf 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/ss/page/8 > Canonical URL: https://steelequivalents.com/materials/ss/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. SS · 373 grades # SS steel grades — 373 designations — Page 8 Every grade designated under SS, 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 asserted identity — the same grade under this standard’s own designation. 9 of 23 rows differ and carry an “Indicative” mark. ## Also known as 373 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [SIS 14 2541](/materials/ss/sis-14-2541 "SIS 14 2541") | [1.6582](/materials/material-no/1.6582 "1.6582") | Quenched and tempered steels | 0.3–0.38 | 25 | | [SIS 14 2940](/materials/ss/sis-14-2940 "SIS 14 2940") | [1.8509](/materials/material-no/1.8509 "1.8509") | Nitriding steels | 0.38–0.45 | 16 | | [SIS 1672](/materials/ss/sis-1672 "SIS 1672") | [1.1191](/materials/material-no/1.1191 "1.1191") | Quenched and tempered steels | 0.42–0.5 | 21 | | [SIS 2225](/materials/ss/sis-2225 "SIS 2225") | [1.7218](/materials/material-no/1.7218 "1.7218") | Quenched and tempered steels | 0.22–0.29 | 25 | | [SIS 2245](/materials/ss/sis-2245 "SIS 2245") | [1.7035](/materials/material-no/1.7035 "1.7035") | Quenched and tempered steels | 0.38–0.45 | 18 | | [SIS 2245](/materials/ss/sis-2245 "SIS 2245") | [1.7039](/materials/material-no/1.7039 "1.7039") | Quenched and tempered steels | 0.38–0.45 | 13 | | [SIS 2304](/materials/ss/sis-2304 "SIS 2304") Indicative | [1.4028](/materials/material-no/1.4028 "1.4028") | Stainless steels | 0.26–0.35 | 18 | | [SIS 2304](/materials/ss/sis-2304 "SIS 2304") Indicative | [1.4031](/materials/material-no/1.4031 "1.4031") | Stainless steels | 0.36–0.42 | 18 | | [SIS 2320](/materials/ss/sis-2320 "SIS 2320") | [1.4016](/materials/material-no/1.4016 "1.4016") | Stainless steels | ≤ 0.08 | 18 | | [SIS 2327](/materials/ss/sis-2327 "SIS 2327") | [1.4362](/materials/material-no/1.4362 "1.4362") | Stainless steels | ≤ 0.03 | 6 | | [SIS 2343](/materials/ss/sis-2343 "SIS 2343") | [1.4436](/materials/material-no/1.4436 "1.4436") | Stainless steels | ≤ 0.05 | 19 | | [SIS 2346](/materials/ss/sis-2346 "SIS 2346") | [1.4305](/materials/material-no/1.4305 "1.4305") | Stainless steels | ≤ 0.1 | 17 | | [SIS 2352](/materials/ss/sis-2352 "SIS 2352") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [SIS 2352](/materials/ss/sis-2352 "SIS 2352") | [1.4307](/materials/material-no/1.4307 "1.4307") | Stainless steels | ≤ 0.03 | 14 | | [SIS 2380](/materials/ss/sis-2380 "SIS 2380") | [1.4005](/materials/material-no/1.4005 "1.4005") | Stainless steels | 0.08–0.15 | 14 | | [SISI 442](/materials/ss/sisi-442 "SISI 442") | [1.4742](/materials/material-no/1.4742 "1.4742") | Heat resistant steels | ≤ 0.12 | 17 | | [SS 2387](/materials/ss/ss-2387 "SS 2387") Indicative | [1.4418](/materials/material-no/1.4418 "1.4418") | Stainless steels | ≤ 0.06 | 2 | | [SS2127](/materials/ss/ss2127 "SS2127") Indicative | [1.7139](/materials/material-no/1.7139 "1.7139") | Case hardening steels | 0.14–0.19 | 11 | | [SS2324](/materials/ss/ss2324 "SS2324") Indicative | [1.4460](/materials/material-no/1.4460 "1.4460") | Stainless steels | ≤ 0.05 | 10 | | [SS2506](/materials/ss/ss2506 "SS2506") Indicative | [1.6526](/materials/material-no/1.6526 "1.6526") | Case hardening steels | 0.17–0.23 | 9 | | [SS2511](/materials/ss/ss2511 "SS2511") Indicative | [1.5715](/materials/material-no/1.5715 "1.5715") | Case hardening steels | 0.13–0.19 | 7 | | [SS2523](/materials/ss/ss2523 "SS2523") Indicative | [1.6566](/materials/material-no/1.6566 "1.6566") | Case hardening steels | 0.14–0.2 | 7 | | [T550](/materials/din-en/t550 "T550") Indicative | [1.0501](/materials/material-no/1.0501 "1.0501") | Quenched and tempered steels | 0.32–0.39 | 23 | **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/ss/page/7 "Previous") Page 8 of 8