--- title: "SS steel grades — 373 designations — Page 7" 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/7 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/ss/page/7.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: sha256:5a7b409ad6e3417bdb6aff783822fd36a6eecb0e9a87c7cc3e4f14fdccc98bcf 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/7 > Canonical URL: https://steelequivalents.com/materials/ss/page/7 > 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 7 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 indicative cross-reference, not an asserted identity — the grades are close, not interchangeable. 5 of 50 rows differ and carry a “This grade’s own name” mark. ## Also known as 373 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [2511](/materials/ss/2511 "2511") | [1.7131](/materials/material-no/1.7131 "1.7131") | Case hardening steels | 0.14–0.19 | 24 | | [2530](/materials/ss/2530 "2530") | [1.5710](/materials/material-no/1.5710 "1.5710") | Quenched and tempered steels | 0.32–0.4 | 14 | | [2541](/materials/ss/2541 "2541") | [1.6582](/materials/material-no/1.6582 "1.6582") | Quenched and tempered steels | 0.3–0.38 | 25 | | [2550](/materials/ss/2550 "2550") | [1.2711](/materials/material-no/1.2711 "1.2711") | Tool steels for cold work | 0.5–0.6 | 16 | | [2550](/materials/ss/2550 "2550") | [1.2721](/materials/material-no/1.2721 "1.2721") | Tool steels for cold work | 0.45–0.55 | 4 | | [2550](/materials/ss/2550 "2550") | [1.2714](/materials/material-no/1.2714 "1.2714") | Tool steels for hot work | 0.5–0.6 | 15 | | [2562](/materials/ss/2562 "2562") | [1.4539](/materials/material-no/1.4539 "1.4539") | Stainless steels | ≤ 0.02 | 10 | | [2584](/materials/ss/2584 "2584") | [1.4563](/materials/material-no/1.4563 "1.4563") | Stainless steels | ≤ 0.02 | 5 | | [2584 2378](/materials/ss/2584-2378 "2584 2378") | [1.4563](/materials/material-no/1.4563 "1.4563") | Stainless steels | ≤ 0.02 | 5 | | [2614](/materials/ss/2614 "2614") | [1.8924](/materials/material-no/1.8924 "1.8924") | Others | ≤ 0.2 | 2 | | [2615](/materials/ss/2615 "2615") | [1.8909](/materials/material-no/1.8909 "1.8909") | Others | ≤ 0.2 | 3 | | [2624](/materials/ss/2624 "2624") | [1.8931](/materials/material-no/1.8931 "1.8931") | High-strength steels | ≤ 0.2 | 3 | | [2625](/materials/ss/2625 "2625") | [1.8928](/materials/material-no/1.8928 "1.8928") | High-strength steels | ≤ 0.2 | 7 | | [2642](/materials/ss/2642 "2642") | [1.0976](/materials/material-no/1.0976 "1.0976") | Fine-grain steels for cold forming | ≤ 0.12 | 9 | | [2652](/materials/ss/2652 "2652") | [1.0980](/materials/material-no/1.0980 "1.0980") | Fine-grain steels for cold forming | ≤ 0.12 | 8 | | [2662](/materials/ss/2662 "2662") | [1.0984](/materials/material-no/1.0984 "1.0984") | Fine-grain steels for cold forming | ≤ 0.12 | 6 | | [2710](/materials/ss/2710 "2710") | [1.2542](/materials/material-no/1.2542 "1.2542") | Tool steels for cold work | 0.4–0.5 | 12 | | [2715](/materials/ss/2715 "2715") | [1.3343](/materials/material-no/1.3343 "1.3343") | High-speed steels | 0.86–0.94 | 19 | | [2721](/materials/ss/2721 "2721") | [1.3355](/materials/material-no/1.3355 "1.3355") | High-speed steels | 0.73–0.83 | 22 | | [2722](/materials/ss/2722 "2722") | [1.3339](/materials/material-no/1.3339 "1.3339") | High-speed steels | 0.8–0.88 | 16 | | [2722](/materials/ss/2722 "2722") | [1.3343](/materials/material-no/1.3343 "1.3343") | High-speed steels | 0.86–0.94 | 19 | | [2723](/materials/ss/2723 "2723") | [1.3243](/materials/material-no/1.3243 "1.3243") | High-speed steels | 0.87–0.95 | 19 | | [2733](/materials/ss/2733 "2733") | [1.3243](/materials/material-no/1.3243 "1.3243") | High-speed steels | 0.87–0.95 | 19 | | [2736](/materials/ss/2736 "2736") | [1.3207](/materials/material-no/1.3207 "1.3207") | High-speed steels | 1.2–1.35 | 14 | | [2750](/materials/ss/2750 "2750") | [1.3355](/materials/material-no/1.3355 "1.3355") | High-speed steels | 0.73–0.83 | 22 | | [2782](/materials/ss/2782 "2782") | [1.3348](/materials/material-no/1.3348 "1.3348") | High-speed steels | 0.95–1.05 | 8 | | [2900](/materials/ss/2900 "2900") | [1.1545](/materials/material-no/1.1545 "1.1545") | Unalloyed tool steels / carbon steels | 1–1.1 | 19 | | [2912](/materials/ss/2912 "2912") | [1.5415](/materials/material-no/1.5415 "1.5415") | Heat-resistant structural steels | 0.12–0.2 | 15 | | [2940](/materials/ss/2940 "2940") | [1.8509](/materials/material-no/1.8509 "1.8509") | Nitriding steels | 0.38–0.45 | 16 | | [40Mn](/materials/gb/40mn "40Mn") | [1.1157](/materials/material-no/1.1157 "1.1157") | Quenched and tempered steels | 0.36–0.44 | 9 | | [7RE10AE](/materials/ss/7re10ae "7RE10AE") | [1.4845](/materials/material-no/1.4845 "1.4845") | Heat resistant steels | ≤ 0.1 | 21 | | [8RE10R](/materials/ss/8re10r "8RE10R") | [1.4845](/materials/material-no/1.4845 "1.4845") | Heat resistant steels | ≤ 0.1 | 21 | | [Duplex 2324](/materials/ss/duplex-2324 "Duplex 2324") | [1.4460](/materials/material-no/1.4460 "1.4460") | Stainless steels | ≤ 0.05 | 10 | | [MH-03](/materials/ss/mh-03 "MH-03") | [2.4665](/materials/material-no/2.4665 "2.4665") | High-temperature steels | 0.05–0.15 | 11 | | [MH-06](/materials/ss/mh-06 "MH-06") | [2.4668](/materials/material-no/2.4668 "2.4668") | High-temperature steels | 0.02–0.08 | 10 | | [MH-07](/materials/ss/mh-07 "MH-07") | [2.4631](/materials/material-no/2.4631 "2.4631") | High-temperature steels / aviation variant | 0.04–0.1 | 5 | | [MH-14](/materials/ss/mh-14 "MH-14") | [2.4634](/materials/material-no/2.4634 "2.4634") | High-temperature steels / aviation variant | 0.12–0.17 | 5 | | [MH-16](/materials/ss/mh-16 "MH-16") | [2.4662](/materials/material-no/2.4662 "2.4662") | Nickel and cobalt alloys | 0.02–0.06 | 5 | | [O110](/materials/ss/o110 "O110") | [EN-JL1010](/materials/material-no/en-jl1010 "EN-JL1010") | Others | — | 16 | | [O115](/materials/ss/o115 "O115") | [EN-JL1020](/materials/material-no/en-jl1020 "EN-JL1020") | Others | — | 22 | | [O120](/materials/ss/o120 "O120") | [EN-JL1030](/materials/material-no/en-jl1030 "EN-JL1030") | Others | — | 22 | | [O125](/materials/ss/o125 "O125") | [EN-JL1040](/materials/material-no/en-jl1040 "EN-JL1040") | Others | — | 22 | | [O130](/materials/ss/o130 "O130") | [EN-JL1050](/materials/material-no/en-jl1050 "EN-JL1050") | Others | — | 22 | | [O135](/materials/ss/o135 "O135") | [EN-JL1060](/materials/material-no/en-jl1060 "EN-JL1060") | Others | — | 21 | | [S165M](/materials/ss/s165m "S165M") | [1.4418](/materials/material-no/1.4418 "1.4418") | Stainless steels | ≤ 0.06 | 2 | | [SIS 14 1572](/materials/ss/sis-14-1572 "SIS 14 1572") This grade’s own name | [1.1181](/materials/material-no/1.1181 "1.1181") | Quenched and tempered steels | 0.32–0.39 | 20 | | [SIS 14 2090](/materials/ss/sis-14-2090 "SIS 14 2090") This grade’s own name | [1.5026](/materials/material-no/1.5026 "1.5026") | Spring steels | 0.52–0.6 | 20 | | [SIS 14 2127](/materials/ss/sis-14-2127 "SIS 14 2127") This grade’s own name | [1.7131](/materials/material-no/1.7131 "1.7131") | Case hardening steels | 0.14–0.19 | 24 | | [SIS 14 2230](/materials/ss/sis-14-2230 "SIS 14 2230") This grade’s own name | [1.8159](/materials/material-no/1.8159 "1.8159") | Quenched and tempered steels | 0.47–0.55 | 27 | | [SIS 14 2234](/materials/ss/sis-14-2234 "SIS 14 2234") This grade’s own name | [1.7220](/materials/material-no/1.7220 "1.7220") | Quenched and tempered steels | 0.3–0.37 | 24 | **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/6 "Previous") Page 7 of 8[Next](/materials/ss/page/8 "Next")