--- title: "SS steel grades — 373 designations — Page 4" 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/4 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/ss/page/4.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: sha256:4e60e55979fa63b2056bb585450c5f47379789c9ba08d36afd61208a23df97c7 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/ss/page/4 > Canonical URL: https://steelequivalents.com/materials/ss/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. SS · 373 grades # SS steel grades — 373 designations — Page 4 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. 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 373 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [2120](/materials/ss/2120 "2120") | [1.1167](/materials/material-no/1.1167 "1.1167") | Quenched and tempered steels | 0.32–0.4 | 17 | | [2120](/materials/ss/2120 "2120") | [1.0762](/materials/material-no/1.0762 "1.0762") | Free cutting steels | 0.4–0.48 | 20 | | [2127](/materials/ss/2127 "2127") | [1.7131](/materials/material-no/1.7131 "1.7131") | Case hardening steels | 0.14–0.19 | 24 | | [2132](/materials/ss/2132 "2132") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [2132](/materials/ss/2132 "2132") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [2132](/materials/ss/2132 "2132") | [1.1133](/materials/material-no/1.1133 "1.1133") | Quenched and tempered steels | 0.17–0.23 | 20 | | [2132](/materials/ss/2132 "2132") | [1.0562](/materials/material-no/1.0562 "1.0562") | Fine-grain structural steels | ≤ 0.18 | 18 | | [2132-01](/materials/ss/2132-01 "2132-01") | [1.0553](/materials/material-no/1.0553 "1.0553") | Unalloyed structural steels | ≤ 0.2 | 20 | | [2132-01](/materials/ss/2132-01 "2132-01") | [1.0045](/materials/material-no/1.0045 "1.0045") | Unalloyed structural steels | ≤ 0.24 | 17 | | [2133](/materials/ss/2133 "2133") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [2133](/materials/ss/2133 "2133") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [2134](/materials/ss/2134 "2134") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [2134](/materials/ss/2134 "2134") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [2134-01](/materials/ss/2134-01 "2134-01") | [1.0553](/materials/material-no/1.0553 "1.0553") | Unalloyed structural steels | ≤ 0.2 | 20 | | [2134-01](/materials/ss/2134-01 "2134-01") | [1.0545](/materials/material-no/1.0545 "1.0545") | Fine-grain structural steels | ≤ 0.2 | 9 | | [2134-01](/materials/ss/2134-01 "2134-01") | [1.8823](/materials/material-no/1.8823 "1.8823") | Others | ≤ 0.14 | 5 | | [2134-01](/materials/ss/2134-01 "2134-01") | [1.0577](/materials/material-no/1.0577 "1.0577") | Unalloyed structural steels | ≤ 0.2 | 11 | | [2135-01](/materials/ss/2135-01 "2135-01") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [2135-01](/materials/ss/2135-01 "2135-01") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [2135-01](/materials/ss/2135-01 "2135-01") | [1.0546](/materials/material-no/1.0546 "1.0546") | Fine-grain structural steels | ≤ 0.18 | 8 | | [2135-01](/materials/ss/2135-01 "2135-01") | [1.8834](/materials/material-no/1.8834 "1.8834") | Fine-grain structural steels | ≤ 0.14 | 6 | | [2140](/materials/ss/2140 "2140") | [1.2419](/materials/material-no/1.2419 "1.2419") | Tool steels for cold work | 1–1.1 | 16 | | [2140](/materials/ss/2140 "2140") | [1.2825](/materials/material-no/1.2825 "1.2825") | Tool steels for cold work | 0.9–1 | 13 | | [2140](/materials/ss/2140 "2140") | [1.2510](/materials/material-no/1.2510 "1.2510") | Tool steels for cold work | 0.9–1.05 | 13 | | [2143](/materials/ss/2143 "2143") | [1.8902](/materials/material-no/1.8902 "1.8902") | Fine-grain structural steels | ≤ 0.2 | 19 | | [2143](/materials/ss/2143 "2143") | [1.8905](/materials/material-no/1.8905 "1.8905") | Fine-grain structural steels | ≤ 0.2 | 14 | | [2143](/materials/ss/2143 "2143") | [1.5218](/materials/material-no/1.5218 "1.5218") | Others | 0.2–0.23 | 13 | | [2145](/materials/ss/2145 "2145") | [1.8900](/materials/material-no/1.8900 "1.8900") | Fine-grain structural steels | ≤ 0.2 | 4 | | [2172](/materials/ss/2172 "2172") | [1.0841](/materials/material-no/1.0841 "1.0841") | Unalloyed structural steels | — | 6 | | [2172](/materials/ss/2172 "2172") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [2172](/materials/ss/2172 "2172") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [2172](/materials/ss/2172 "2172") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [2172](/materials/ss/2172 "2172") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [2173](/materials/ss/2173 "2173") | [1.7131](/materials/material-no/1.7131 "1.7131") | Case hardening steels | 0.14–0.19 | 24 | | [2174](/materials/ss/2174 "2174") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [2174](/materials/ss/2174 "2174") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [2183](/materials/ss/2183 "2183") | [1.3401](/materials/material-no/1.3401 "1.3401") | Quenched and tempered steels | 1.1–1.3 | 19 | | [2214](/materials/gost/2214 "2214") | [1.2344](/materials/material-no/1.2344 "1.2344") | Tool steels for hot work | 0.35–0.42 | 20 | | [2216](/materials/gost/2216 "2216") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [2216](/materials/gost/2216 "2216") | [1.7262](/materials/material-no/1.7262 "1.7262") | Case hardening steels | 0.13–0.17 | 18 | | [2216](/materials/gost/2216 "2216") | [1.7337](/materials/material-no/1.7337 "1.7337") | Heat-resistant structural steels | 0.13–0.2 | 9 | | [2218](/materials/ss/2218 "2218") | [1.7380](/materials/material-no/1.7380 "1.7380") | Heat-resistant structural steels | 0.08–0.14 | 20 | | [2225](/materials/ss/2225 "2225") | [1.7218](/materials/material-no/1.7218 "1.7218") | Quenched and tempered steels | 0.22–0.29 | 25 | | [2225](/materials/ss/2225 "2225") | [1.7220](/materials/material-no/1.7220 "1.7220") | Quenched and tempered steels | 0.3–0.37 | 24 | | [2230](/materials/ss/2230 "2230") | [1.8159](/materials/material-no/1.8159 "1.8159") | Quenched and tempered steels | 0.47–0.55 | 27 | | [2233](/materials/ss/2233 "2233") | [1.7220](/materials/material-no/1.7220 "1.7220") | Quenched and tempered steels | 0.3–0.37 | 24 | | [2233](/materials/ss/2233 "2233") | [1.7218](/materials/material-no/1.7218 "1.7218") | Quenched and tempered steels | 0.22–0.29 | 25 | | [2234](/materials/ss/2234 "2234") | [1.7220](/materials/material-no/1.7220 "1.7220") | Quenched and tempered steels | 0.3–0.37 | 24 | | [2234](/materials/ss/2234 "2234") | [1.7218](/materials/material-no/1.7218 "1.7218") | Quenched and tempered steels | 0.22–0.29 | 25 | | [2234](/materials/ss/2234 "2234") | [1.2330](/materials/material-no/1.2330 "1.2330") | Others | 0.32–0.37 | 8 | **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/3 "Previous") Page 4 of 8[Next](/materials/ss/page/5 "Next")