--- title: "SRPS steel grades — 178 designations" description: "Steel grades designated under SRPS, with chemical composition, mechanical properties and equivalents in other standards. 178 designations across 178…" canonical: https://steelequivalents.com/materials/srps language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/srps.md cs: https://steelequivalents.com/cs/materiály/srps.md de: https://steelequivalents.com/de/werkstoffe/srps.md es: https://steelequivalents.com/es/materiales/srps.md fr: https://steelequivalents.com/fr/matériaux/srps.md hu: https://steelequivalents.com/hu/anyagok/srps.md it: https://steelequivalents.com/it/materiali/srps.md nl: https://steelequivalents.com/nl/materialen/srps.md pl: https://steelequivalents.com/pl/materiały/srps.md pt: https://steelequivalents.com/pt/materiais/srps.md ru: https://steelequivalents.com/ru/материалы/srps.md tr: https://steelequivalents.com/tr/malzemeler/srps.md zh: https://steelequivalents.com/zh/材料/srps.md ja: https://steelequivalents.com/ja/材料/srps.md ar: https://steelequivalents.com/ar/المواد/srps.md ko: https://steelequivalents.com/ko/재료/srps.md pt-br: https://steelequivalents.com/pt-br/materiais/srps.md hi: https://steelequivalents.com/hi/सामग्री/srps.md content_hash: sha256:cba122c33c6e080c1d5f6d80bb06b697b0e10ad99bdfaf410c91a2870622b2a0 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/srps > Canonical URL: https://steelequivalents.com/materials/srps > 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. SRPS · 178 grades # SRPS steel grades — 178 designations Every grade designated under SRPS, 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 178 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [Č.0361](/materials/srps/c-0361 "Č.0361") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [Č.0363](/materials/srps/c-0363 "Č.0363") | [1.0037](/materials/material-no/1.0037 "1.0037") | Unalloyed structural steels | ≤ 0.17 | 7 | | [Č.0363](/materials/srps/c-0363 "Č.0363") | [1.0037](/materials/material-no/1.0037 "1.0037") | Unalloyed structural steels | ≤ 0.17 | 4 | | [Č.0452](/materials/srps/c-0452 "Č.0452") | [1.0144](/materials/material-no/1.0144 "1.0144") | Unalloyed structural steels | ≤ 0.18 | 22 | | [Č.0545](/materials/srps/c-0545 "Č.0545") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [Č.0545](/materials/srps/c-0545 "Č.0545") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [Č.0561](/materials/srps/c-0561 "Č.0561") | [1.0553](/materials/material-no/1.0553 "1.0553") | Unalloyed structural steels | ≤ 0.2 | 20 | | [Č.0563](/materials/srps/c-0563 "Č.0563") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [Č.0563](/materials/srps/c-0563 "Č.0563") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [Č.0645](/materials/srps/c-0645 "Č.0645") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [Č.0645](/materials/srps/c-0645 "Č.0645") | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [Č.0745](/materials/srps/c-0745 "Č.0745") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [Č.0745](/materials/srps/c-0745 "Č.0745") | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [Č.1120](/materials/srps/c-1120 "Č.1120") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [Č.1220](/materials/srps/c-1220 "Č.1220") | [1.0401](/materials/material-no/1.0401 "1.0401") | Case hardening steels | 0.12–0.18 | 23 | | [Č.1330](/materials/srps/c-1330 "Č.1330") | [1.0402](/materials/material-no/1.0402 "1.0402") | Quenched and tempered steels | 0.17–0.24 | 24 | | [Č.1430](/materials/srps/c-1430 "Č.1430") | [1.0501](/materials/material-no/1.0501 "1.0501") | Quenched and tempered steels | 0.32–0.39 | 23 | | [Č.1530](/materials/srps/c-1530 "Č.1530") | [1.0503](/materials/material-no/1.0503 "1.0503") | Quenched and tempered steels | 0.42–0.5 | 24 | | [Č.1540](/materials/srps/c-1540 "Č.1540") | [1.0511](/materials/material-no/1.0511 "1.0511") | Quenched and tempered steels | 0.37–0.44 | 21 | | [Č.1630](/materials/srps/c-1630 "Č.1630") | [1.0535](/materials/material-no/1.0535 "1.0535") | Quenched and tempered steels | 0.52–0.6 | 21 | | [Č.1730](/materials/srps/c-1730 "Č.1730") | [1.0601](/materials/material-no/1.0601 "1.0601") | Quenched and tempered steels | 0.57–0.65 | 25 | | [Č.1740](/materials/srps/c-1740 "Č.1740") | [1.1620](/materials/material-no/1.1620 "1.1620") | Unalloyed tool steels / carbon steels | 0.65–0.74 | 14 | | [Č.1832](/materials/srps/c-1832 "Č.1832") | [1.0605](/materials/material-no/1.0605 "1.0605") | Spring steels | 0.7–0.8 | 11 | | [Č.1840](/materials/srps/c-1840 "Č.1840") | [1.1525](/materials/material-no/1.1525 "1.1525") | Unalloyed tool steels / carbon steels | 0.75–0.85 | 20 | | [Č.1940](/materials/srps/c-1940 "Č.1940") | [1.1545](/materials/material-no/1.1545 "1.1545") | Unalloyed tool steels / carbon steels | 1–1.1 | 19 | | [Č.1943](/materials/srps/c-1943 "Č.1943") | [1.1563](/materials/material-no/1.1563 "1.1563") | Unalloyed tool steels / carbon steels | 1.2–1.35 | 13 | | [Č.1946](/materials/srps/c-1946 "Č.1946") | [1.1554](/materials/material-no/1.1554 "1.1554") | Unalloyed tool steels / carbon steels | 1–1.1 | 4 | | [Č.1948](/materials/srps/c-1948 "Č.1948") | [1.1573](/materials/material-no/1.1573 "1.1573") | Unalloyed tool steels / carbon steels | 1.3–1.45 | 1 | | [Č.2130](/materials/srps/c-2130 "Č.2130") | [1.5023](/materials/material-no/1.5023 "1.5023") | Spring steels | 0.35–0.42 | 3 | | [Č.2131](/materials/srps/c-2131 "Č.2131") | [1.5024](/materials/material-no/1.5024 "1.5024") | Spring steels | 0.42–0.5 | 6 | | [Č.2132](/materials/srps/c-2132 "Č.2132") | [1.5025](/materials/material-no/1.5025 "1.5025") | Spring steels | 0.47–0.55 | 5 | | [Č.2133](/materials/srps/c-2133 "Č.2133") | [1.5026](/materials/material-no/1.5026 "1.5026") | Spring steels | 0.52–0.6 | 20 | | [Č.2330](/materials/srps/c-2330 "Č.2330") | [1.5142](/materials/material-no/1.5142 "1.5142") | Spring steels | 0.55–0.65 | 1 | | [Č.2331](/materials/srps/c-2331 "Č.2331") | [1.5027](/materials/material-no/1.5027 "1.5027") | Spring steels | 0.56–0.64 | 11 | | [Č.2332](/materials/srps/c-2332 "Č.2332") | [1.5028](/materials/material-no/1.5028 "1.5028") | Spring steels | 0.6–0.7 | 11 | | [Č.2430](/materials/srps/c-2430 "Č.2430") | [1.7108](/materials/material-no/1.7108 "1.7108") | Spring steels | 0.57–0.65 | 11 | | [Č.3134](/materials/srps/c-3134 "Č.3134") | [1.0913](/materials/material-no/1.0913 "1.0913") | Others | 0.45–0.55 | 1 | | [Č.3160](/materials/srps/c-3160 "Č.3160") | [1.3401](/materials/material-no/1.3401 "1.3401") | Quenched and tempered steels | 1.1–1.3 | 19 | | [Č.3230](/materials/srps/c-3230 "Č.3230") | [1.5122](/materials/material-no/1.5122 "1.5122") | Quenched and tempered steels | 0.33–0.41 | 6 | | [Č.3830](/materials/srps/c-3830 "Č.3830") | [1.5223](/materials/material-no/1.5223 "1.5223") | Quenched and tempered steels | 0.38–0.45 | 8 | | [Č.3990](/materials/srps/c-3990 "Č.3990") | [1.0715](/materials/material-no/1.0715 "1.0715") | Free cutting steels | ≤ 0.14 | 14 | | [Č.4120](/materials/srps/c-4120 "Č.4120") | [1.7016](/materials/material-no/1.7016 "1.7016") | Case hardening steels | 0.14–0.2 | 11 | | [Č.4120.1](/materials/srps/c-4120-1 "Č.4120.1") | [1.7027](/materials/material-no/1.7027 "1.7027") | Case hardening steels | 0.17–0.23 | 12 | | [Č.4130](/materials/srps/c-4130 "Č.4130") | [1.7033](/materials/material-no/1.7033 "1.7033") | Quenched and tempered steels | 0.3–0.37 | 18 | | [Č.4131](/materials/srps/c-4131 "Č.4131") | [1.7035](/materials/material-no/1.7035 "1.7035") | Quenched and tempered steels | 0.38–0.45 | 18 | | [Č.4132](/materials/srps/c-4132 "Č.4132") | [1.7003](/materials/material-no/1.7003 "1.7003") | Quenched and tempered steels | 0.35–0.42 | 6 | | [Č.4133](/materials/srps/c-4133 "Č.4133") | [1.7006](/materials/material-no/1.7006 "1.7006") | Quenched and tempered steels | 0.42–0.5 | 5 | | [Č.4134](/materials/srps/c-4134 "Č.4134") | [1.7034](/materials/material-no/1.7034 "1.7034") | Quenched and tempered steels | 0.34–0.41 | 23 | | [Č.4141](/materials/srps/c-4141 "Č.4141") | [1.2210](/materials/material-no/1.2210 "1.2210") | Tool steels for cold work | 1.1–1.25 | 13 | | [Č.4143](/materials/srps/c-4143 "Č.4143") | [1.2008](/materials/material-no/1.2008 "1.2008") | Tool steels for cold work | 1.35–1.5 | 9 | **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. Page 1 of 4[Next](/materials/srps/page/2 "Next")