--- title: "Ck 22 — Quenched and tempered steels" description: "Ck 22 in DIN / EN: material number 1.1151, also listed as C22E. Category: Quenched and tempered steels. Designations recorded for this grade: 27." canonical: https://steelequivalents.com/materials/din-en/ck22 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/ck22.md cs: https://steelequivalents.com/cs/materiály/din-en/ck22.md de: https://steelequivalents.com/de/werkstoffe/din-en/ck22.md es: https://steelequivalents.com/es/materiales/din-en/ck22.md fr: https://steelequivalents.com/fr/matériaux/din-en/ck22.md hu: https://steelequivalents.com/hu/anyagok/din-en/ck22.md it: https://steelequivalents.com/it/materiali/din-en/ck22.md nl: https://steelequivalents.com/nl/materialen/din-en/ck22.md pl: https://steelequivalents.com/pl/materiały/din-en/ck22.md pt: https://steelequivalents.com/pt/materiais/din-en/ck22.md ru: https://steelequivalents.com/ru/материалы/din-en/ck22.md tr: https://steelequivalents.com/tr/malzemeler/din-en/ck22.md zh: https://steelequivalents.com/zh/材料/din-en/ck22.md ja: https://steelequivalents.com/ja/材料/din-en/ck22.md ar: https://steelequivalents.com/ar/المواد/din-en/ck22.md ko: https://steelequivalents.com/ko/재료/din-en/ck22.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/ck22.md hi: https://steelequivalents.com/hi/सामग्री/din-en/ck22.md content_hash: sha256:563d52f466724114f00536e7df58aefa348fd41afa7e333f5dc1214652aea773 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/din-en/ck22 > Canonical URL: https://steelequivalents.com/materials/din-en/ck22 > 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. DIN / EN · Europe · 27 designations # Ck 22 Ck 22 is a designation in DIN / EN for the material held under material number 1.1151, also listed as C22E. It is a material in the category Quenched and tempered steels. We list 27 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, UNE, JIS, GB, GOST, UNI, ČSN, ABNT NBR, STN, PN, MKE and MSZ. - [*Material no.* **1.1151**](/materials/material-no/1.1151 "Material no.: 1.1151") - [*Category* **Quenched and tempered steels · 133 grades**](/categories/quenched-and-tempered-steels "Category: Quenched and tempered steels · 133 grades") - *Designations* **27** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=e918a94a-0040-4612-b034-33bdc109c18a&designation=b4f2d97c-0c10-4a46-b12a-2f61e99c09f7 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/ck22.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN C22E This grade’s own name](/materials/din-en/c22e "DIN / EN C22E") - [UNS G10200 This grade’s own name · 8 grades on that route](/materials/uns/g10200 "UNS G10200") - [AISI / SAE 1020 This grade’s own name · 11 grades on that route](/materials/aisi-sae/1020 "AISI / SAE 1020") ## About Quenched and tempered steels Quenched and tempered steels are heat-treated steels designed to combine high strength with useful toughness and ductility. They are used for heavily loaded components such as shafts, gears, fasteners and structural machine parts where resistance to mechanical stress is required. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 27 designations · 16 standards · nothing hidden 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. DIN / EN Europe · 2 - [C22E This grade’s own name](/materials/din-en/c22e "DIN / EN C22E") - **Ck 22 This grade’s own name Withdrawn** UNS United States · 2 - [G10200 This grade’s own name](/materials/uns/g10200 "UNS G10200") - [G10230 This grade’s own name](/materials/uns/g10230 "UNS G10230") AISI / SAE United States · 3 - [1020 This grade’s own name](/materials/aisi-sae/1020 "AISI / SAE 1020") - [10201023 Indicative](/materials/aisi-sae/10201023 "AISI / SAE 10201023") - [1023 This grade’s own name](/materials/aisi-sae/1023 "AISI / SAE 1023") BS United Kingdom · 3 - [050A20 Indicative](/materials/bs/050a20 "BS 050A20") - [070M20 Indicative](/materials/bs/070m20 "BS 070M20") - [CS22 Indicative](/materials/bs/cs22 "BS CS22") AFNOR France · 3 - [C22E Indicative](/materials/din-en/c22e "AFNOR C22E") - [XC18 Indicative](/materials/afnor/xc18 "AFNOR XC18") - [XC25 Indicative](/materials/afnor/xc25 "AFNOR XC25") UNE Spain · 2 - [F.1120 Indicative](/materials/une/f-1120 "UNE F.1120") - [F.1120-C25k Indicative](/materials/une/f-1120-c25k "UNE F.1120-C25k") JIS Japan · 2 - [S20C Indicative](/materials/jis/s20c "JIS S20C") - [S22C Indicative](/materials/jis/s22c "JIS S22C") GB China · 1 - [20 Indicative](/materials/bds/20 "GB 20") GOST Russia / CIS · 2 - [20 Indicative](/materials/bds/20 "GOST 20") - [st 20 Indicative](/materials/gost/st-20 "GOST st 20") UNI Italy · 1 - [C25 Indicative](/materials/din-en/c25 "UNI C25") ČSN Czechia · 1 - [12024 Indicative](/materials/csn/12024 "ČSN 12024") ABNT NBR Brazil · 1 - [1020 Indicative](/materials/aisi-sae/1020 "ABNT NBR 1020") STN Slovakia · 1 - [12 024 Indicative](/materials/csn/12024 "STN 12 024") PN Poland · 1 - [20 Indicative](/materials/bds/20 "PN 20") MKE Türkiye · 1 - [Ç 1020 Indicative](/materials/mke/c-1020 "MKE Ç 1020") MSZ Hungary · 1 - [C 22 Indicative](/materials/is/c22 "MSZ C 22") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 8 elements on file · weight % What this alloy is Fe Mn Si Cr Iron — the balance, never listed by a standard — 97.9 % Mn — 0.6 % Si — 0.4 % Cr — 0.4 % Traces & impurities · 0.8 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.17–0.24 | | Si | ≤ 0.4 | | Mn | 0.4–0.7 | | P | 0.035 | | S | 0.035 | | Cr | ≤ 0.4 | | Mo | ≤ 0.1 | | Ni | ≤ 0.4 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel 0.01 % 0.1 % 1 % 10 % 100 % The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other. | Element | As published source text, verbatim | Min% by weight | Max% by weight | Bound | |---|---|---|---|---| | C | 0,17-0,24 | 0.170 | 0.240 | Range | | Si | ≤0,40 | — | 0.400 | Max | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | ≤0,40 | — | 0.400 | Max | | Mn | 0,40-0,70 | 0.400 | 0.700 | Range | | Ni | ≤0,40 | — | 0.400 | Max | | Mo | ≤0,10 | — | 0.100 | Max | The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred. ## Predicted transformation temperatures computed from composition · °C Predicted Ae3 812 °C Predicted Ae1 725 °C Predicted Acm 465 °C Predicted Bs 575 °C These four temperatures are a CALCULATION from this grade's own composition, using the published Li, Niebuhr, Meekisho & Atteridge (1998) model — never a measurement, and computed from the UPPER BOUND of each element's specified range, not a mid-range figure. Where this grade also has a measured transformation point (Ac1, Ac3, Ar1, Ar3) on file, it is shown separately, in Physical & mechanical properties, and is never replaced by the predicted figures here — Ae (predicted, equilibrium) and Ac/Ar (measured, on heating or cooling) are different physical quantities and can differ by tens of degrees; a mismatch between the two is not an error in either. ## Physical & mechanical properties Density 7,85 g/cm³ Exact An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material. ## Properties by condition 6 conditions · 22 values By thickness**Quenched and tempered** source `steelnumber` | Thickness mm | ReH N/mm² | Rm N/mm² | A% | |---|---|---|---| | ≤ 8 | 340 | 500 | 20 | | 8 – 20 | 290 | 470 | 22 | | 20 – 50 | 270 | 440 | 22 | | 50 – 80 | 260 | 420 | 22 | By thickness**Normalized** source `steelnumber` | Thickness mm | Rm N/mm² | A% | |---|---|---| | ≤ 16 | 430 | 24 | | 16 – 100 | 410 | 25 | By thickness**Soft annealed** source `steelnumber` | Thickness mm | Rm N/mm² | A80% | |---|---|---| | 0.3 – 3 | 500 | 22 | By thickness**Cold rolled** source `steelnumber` | Thickness mm | Rm N/mm² | |---|---| | 0.3 – 3 | 900 | By delivery state**Cold rolled** source `steelnumber` | Delivery state | HV | |---|---| | Cold rolled | 265 | By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | HV | |---|---|---| | Soft annealed | 156 | 155 | Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ. ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.1, a shared category, and a published range for Mn / Si that overlaps this grade’s. These are neighbours in composition space — they are not equivalents, and none is claimed to be interchangeable with this grade. [C22R 1.1149 Mn 0,40-0,70 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 11 designations](/materials/din-en/c22r "C22R")[1.1158 1.1158 Mn 0,40-0,70 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 19 designations](/materials/material-no/1.1158 "1.1158")[C25R 1.1163 Mn 0,40-0,70 · Si ≤0,40 - ΔMn 0.00 - ΔSi 0.00 - 8 designations](/materials/din-en/c25r "C25R")[C26D2 1.1139 Mn 0,50-0,70 · Si 0,10-0,30 - ΔMn 0.05 - ΔSi 0.00 - 7 designations](/materials/din-en/c26d2 "C26D2")[C32D2 1.1143 Mn 0,50-0,70 · Si 0,10-0,30 - ΔMn 0.05 - ΔSi 0.00 - 9 designations](/materials/din-en/c32d2 "C32D2")[C40D2 1.1153 Mn 0,50-0,70 · Si 0,10-0,30 - ΔMn 0.05 - ΔSi 0.00 - 10 designations](/materials/din-en/c40d2 "C40D2") ## Looking for this grade under another name? 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?material=e918a94a-0040-4612-b034-33bdc109c18a&designation=b4f2d97c-0c10-4a46-b12a-2f61e99c09f7 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/ck22.pdf "Datasheet as PDF")