--- title: "SS steel grades — 373 designations — Page 3" 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/3 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/ss/page/3.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: sha256:6e65e3ee1ddf3ab44f9113ce5227e5b830c9c00e5b828ead41c27216d03e6f0f generated: 2026-09-22 --- > **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/3 > Canonical URL: https://steelequivalents.com/materials/ss/page/3 > 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 3 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 | |---|---|---|---|---| | [1650](/materials/ss/1650 "1650") | [1.0580](/materials/material-no/1.0580 "1.0580") | Unalloyed structural steels | ≤ 0.22 | 10 | | [1650](/materials/ss/1650 "1650") | [1.0503](/materials/material-no/1.0503 "1.0503") | Quenched and tempered steels | 0.42–0.5 | 24 | | [1650](/materials/ss/1650 "1650") | [1.0511](/materials/material-no/1.0511 "1.0511") | Quenched and tempered steels | 0.37–0.44 | 21 | | [1650](/materials/ss/1650 "1650") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [1650](/materials/ss/1650 "1650") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [1650-00](/materials/ss/1650-00 "1650-00") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [1650-00](/materials/ss/1650-00 "1650-00") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [1650-01](/materials/ss/1650-01 "1650-01") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [1650-01](/materials/ss/1650-01 "1650-01") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [1655](/materials/ss/1655 "1655") | [1.0535](/materials/material-no/1.0535 "1.0535") | Quenched and tempered steels | 0.52–0.6 | 21 | | [1655-00](/materials/ss/1655-00 "1655-00") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [1655-00](/materials/ss/1655-00 "1655-00") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [1655-01](/materials/ss/1655-01 "1655-01") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [1655-01](/materials/ss/1655-01 "1655-01") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [1660](/materials/ss/1660 "1660") | [1.1201](/materials/material-no/1.1201 "1.1201") | Quenched and tempered steels | 0.42–0.5 | 11 | | [1665](/materials/ss/1665 "1665") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [1665](/materials/ss/1665 "1665") | [1.1221](/materials/material-no/1.1221 "1.1221") | Quenched and tempered steels | 0.57–0.65 | 18 | | [1672](/materials/ss/1672 "1672") | [1.1191](/materials/material-no/1.1191 "1.1191") | Quenched and tempered steels | 0.42–0.5 | 21 | | [1672](/materials/ss/1672 "1672") | [1.1191](/materials/material-no/1.1191 "1.1191") | Others | 0.42–0.5 | 18 | | [1672](/materials/ss/1672 "1672") | [1.0503](/materials/material-no/1.0503 "1.0503") | Quenched and tempered steels | 0.42–0.5 | 24 | | [1672](/materials/ss/1672 "1672") | [1.1730](/materials/material-no/1.1730 "1.1730") | Unalloyed tool steels / carbon steels | 0.42–0.5 | 14 | | [1674](/materials/ss/1674 "1674") | [1.0540](/materials/material-no/1.0540 "1.0540") | Quenched and tempered steels | 0.47–0.55 | 13 | | [1674](/materials/ss/1674 "1674") | [1.1206](/materials/material-no/1.1206 "1.1206") | Quenched and tempered steels | 0.47–0.55 | 17 | | [1674](/materials/ss/1674 "1674") | [1.1213](/materials/material-no/1.1213 "1.1213") | Steels for surface hardening | 0.5–0.57 | 11 | | [1674](/materials/ss/1674 "1674") | [1.0535](/materials/material-no/1.0535 "1.0535") | Quenched and tempered steels | 0.52–0.6 | 21 | | [1678](/materials/ss/1678 "1678") | [1.1221](/materials/material-no/1.1221 "1.1221") | Quenched and tempered steels | 0.57–0.65 | 18 | | [1678](/materials/ss/1678 "1678") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [1770](/materials/ss/1770 "1770") | [1.1231](/materials/material-no/1.1231 "1.1231") | Spring steels | 0.65–0.73 | 18 | | [1870](/materials/ss/1870 "1870") | [1.1274](/materials/material-no/1.1274 "1.1274") | Spring steels | 0.95–1.05 | 13 | | [1880](/materials/ss/1880 "1880") | [1.1545](/materials/material-no/1.1545 "1.1545") | Unalloyed tool steels / carbon steels | 1–1.1 | 19 | | [1880](/materials/ss/1880 "1880") | [1.1645](/materials/material-no/1.1645 "1.1645") | Unalloyed tool steels / carbon steels | 1–1.1 | 18 | | [1912](/materials/ss/1912 "1912") | [1.0721](/materials/material-no/1.0721 "1.0721") | Free cutting steels | 0.07–0.13 | 15 | | [1912](/materials/ss/1912 "1912") | [1.0715](/materials/material-no/1.0715 "1.0715") | Free cutting steels | ≤ 0.14 | 14 | | [1914](/materials/ss/1914 "1914") | [1.0718](/materials/material-no/1.0718 "1.0718") | Free cutting steels | ≤ 0.14 | 11 | | [1922](/materials/ss/1922 "1922") | [1.0723](/materials/material-no/1.0723 "1.0723") | Free cutting steels | 0.12–0.18 | 3 | | [1926](/materials/ss/1926 "1926") | [1.0737](/materials/material-no/1.0737 "1.0737") | Free cutting steels | ≤ 0.14 | 8 | | [1957](/materials/ss/1957 "1957") | [1.0726](/materials/material-no/1.0726 "1.0726") | Free cutting steels | 0.32–0.39 | 15 | | [1957-03](/materials/ss/1957-03 "1957-03") | [1.0726](/materials/material-no/1.0726 "1.0726") | Free cutting steels | 0.32–0.39 | 15 | | [1973](/materials/ss/1973 "1973") | [1.0727](/materials/material-no/1.0727 "1.0727") | Free cutting steels | 0.42–0.5 | 8 | | [2085](/materials/ss/2085 "2085") | [1.5026](/materials/material-no/1.5026 "1.5026") | Spring steels | 0.52–0.6 | 20 | | [2090](/materials/ss/2090 "2090") | [1.5026](/materials/material-no/1.5026 "1.5026") | Spring steels | 0.52–0.6 | 20 | | [2090](/materials/ss/2090 "2090") | [1.7102](/materials/material-no/1.7102 "1.7102") | Spring steels | 0.51–0.59 | 14 | | [2101](/materials/ss/2101 "2101") | [1.0473](/materials/material-no/1.0473 "1.0473") | Heat-resistant structural steels | 0.1–0.22 | 10 | | [2102](/materials/ss/2102 "2102") | [1.0481](/materials/material-no/1.0481 "1.0481") | Heat-resistant structural steels | 0.08–0.2 | 17 | | [2102](/materials/ss/2102 "2102") | [1.0473](/materials/material-no/1.0473 "1.0473") | Heat-resistant structural steels | 0.1–0.22 | 10 | | [2103](/materials/ss/2103 "2103") | [1.0481](/materials/material-no/1.0481 "1.0481") | Heat-resistant structural steels | 0.08–0.2 | 17 | | [2103](/materials/ss/2103 "2103") | [1.0473](/materials/material-no/1.0473 "1.0473") | Heat-resistant structural steels | 0.1–0.22 | 10 | | [2103](/materials/ss/2103 "2103") | [1.0436](/materials/material-no/1.0436 "1.0436") | Fine-grain structural steels | 0.15–0.2 | 14 | | [2106](/materials/ss/2106 "2106") | [1.0562](/materials/material-no/1.0562 "1.0562") | Fine-grain structural steels | ≤ 0.18 | 18 | | [2107](/materials/ss/2107 "2107") | [1.0566](/materials/material-no/1.0566 "1.0566") | Fine-grain structural steels | ≤ 0.18 | 11 | **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/2 "Previous") Page 3 of 8[Next](/materials/ss/page/4 "Next")