--- title: "C50 C50E4 C50M2 — 9 equivalent grades, compared" description: "The designation C50 C50E4 C50M2 is carried by 9 different grades. Compare them on the elements that actually differ, then open the one your print means." canonical: https://steelequivalents.com/materials/iso/c50-c50e4-c50m2 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/iso/c50-c50e4-c50m2.md cs: https://steelequivalents.com/cs/materiály/iso/c50-c50e4-c50m2.md de: https://steelequivalents.com/de/werkstoffe/iso/c50-c50e4-c50m2.md es: https://steelequivalents.com/es/materiales/iso/c50-c50e4-c50m2.md fr: https://steelequivalents.com/fr/matériaux/iso/c50-c50e4-c50m2.md hu: https://steelequivalents.com/hu/anyagok/iso/c50-c50e4-c50m2.md it: https://steelequivalents.com/it/materiali/iso/c50-c50e4-c50m2.md nl: https://steelequivalents.com/nl/materialen/iso/c50-c50e4-c50m2.md pl: https://steelequivalents.com/pl/materiały/iso/c50-c50e4-c50m2.md pt: https://steelequivalents.com/pt/materiais/iso/c50-c50e4-c50m2.md ru: https://steelequivalents.com/ru/материалы/iso/c50-c50e4-c50m2.md tr: https://steelequivalents.com/tr/malzemeler/iso/c50-c50e4-c50m2.md zh: https://steelequivalents.com/zh/材料/iso/c50-c50e4-c50m2.md ja: https://steelequivalents.com/ja/材料/iso/c50-c50e4-c50m2.md ar: https://steelequivalents.com/ar/المواد/iso/c50-c50e4-c50m2.md ko: https://steelequivalents.com/ko/재료/iso/c50-c50e4-c50m2.md pt-br: https://steelequivalents.com/pt-br/materiais/iso/c50-c50e4-c50m2.md hi: https://steelequivalents.com/hi/सामग्री/iso/c50-c50e4-c50m2.md content_hash: sha256:3a6bdd2bd96fe3824b024659e9b54c70fa1e918f4f0193f452076f9e4d215c49 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/iso/c50-c50e4-c50m2 > Canonical URL: https://steelequivalents.com/materials/iso/c50-c50e4-c50m2 > 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. ISO · International · 9 grades # C50 C50E4 C50M2 The designation C50 C50E4 C50M2 is carried by 9 different grades. Compare them on the elements that actually differ, then open the one your print means. - *Matching grades* **9** - [*Category* **Quenched and tempered steels · 133 grades**](/categories/quenched-and-tempered-steels "Category: Quenched and tempered steels · 133 grades") - [*Category* **Steels for surface hardening · 13 grades**](/categories/steels-for-surface-hardening "Category: Steels for surface hardening · 13 grades") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") [Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry") ## Which of the 9 do you want? This name is carried by several grades. The elements shown are the ones whose values actually differ across the set — the ones that decide the question. Values are the source text verbatim; an em dash means no value on file for that element on that grade, not zero. | Grade | Material no. | Category | Designations | C% | S% | P% | Mn% | Si% | Cr% | |---|---|---|---|---|---|---|---|---|---| | [C50](/materials/din-en/c50 "C50") | [1.0540](/materials/material-no/1.0540 "1.0540") 1.0 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 25 | 0,47-0,55 | 0,045 | 0,045 | 0,60-0,90 | ≤0,40 | ≤0,40 | | [C50D](/materials/din-en/c50d "C50D") | [1.0586](/materials/material-no/1.0586 "1.0586") 1.0 | [Steels for surface hardening](/categories/steels-for-surface-hardening "Steels for surface hardening") | 8 | 0,48-0,53 | 0,03 | 0,03 | 0,50-0,80 | 0,10-0,30 | ≤0,15 | | [C50D2](/materials/din-en/c50d2 "C50D2") | [1.1171](/materials/material-no/1.1171 "1.1171") 1.1 | [Others](/categories/others "Others") | 7 | 0,48-0,52 | 0,025 | 0,02 | 0,50-0,70 | 0,10-0,30 | ≤0,10 | | [C45R](/materials/din-en/c45r "C45R") | [1.1201](/materials/material-no/1.1201 "1.1201") 1.1 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 22 | 0,42-0,50 | 0,020-0,040 | 0,03 | 0,50-0,80 | ≤0,40 | ≤0,40 | | [C50E](/materials/din-en/c50e "C50E") | [1.1206](/materials/material-no/1.1206 "1.1206") 1.1 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 33 | 0,47-0,55 | 0,035 | 0,03 | 0,60-0,90 | ≤0,40 | ≤0,40 | | [1.1213](/materials/material-no/1.1213 "1.1213") | [1.1213](/materials/material-no/1.1213 "1.1213") 1.1 | [Steels for surface hardening](/categories/steels-for-surface-hardening "Steels for surface hardening") | 20 | 0,50-0,57 | 0,035 | 0,025 | 0,40-0,70 | 0,15-0,35 | — | | [C50R](/materials/din-en/c50r "C50R") | [1.1241](/materials/material-no/1.1241 "1.1241") 1.1 | [Steels for surface hardening](/categories/steels-for-surface-hardening "Steels for surface hardening") | 12 | 0,47-0,55 | 0,020-0,040 | 0,03 | 0,60-0,90 | ≤0,40 | ≤0,40 | | [SAE 1049](/materials/din-en/sae-1049 "SAE 1049") | [1.9505](/materials/material-no/1.9505 "1.9505") 1.9 | [Others](/categories/others "Others") | 7 | 0,46-0,53 | 0,05 | 0,03 | 0,60-0,90 | — | — | | [G10500](/materials/uns/g10500 "G10500") | [1.9505](/materials/material-no/1.9505 "1.9505") 1.9 | [Steels for surface hardening](/categories/steels-for-surface-hardening "Steels for surface hardening") | 7 | 0,48-0,55 | 0,05 | 0,03 | 0,60-0,90 | — | — | ## Not sure which one your print means? Search the catalogue by designation, material number or composition — every name on this page is itself a way in. [Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry")