--- title: "2.4681 — Nickel and cobalt alloys" description: "2.4681 is the material number of the grade also listed as CoCr26Ni9Mo5W. Category: Nickel and cobalt alloys. Designations recorded for this grade: 1." canonical: https://steelequivalents.com/materials/material-no/2.4681 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/2.4681.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/2.4681.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/2.4681.md es: https://steelequivalents.com/es/materiales/número-de-material/2.4681.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/2.4681.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/2.4681.md it: https://steelequivalents.com/it/materiali/numero-materiale/2.4681.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/2.4681.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/2.4681.md pt: https://steelequivalents.com/pt/materiais/número-do-material/2.4681.md ru: https://steelequivalents.com/ru/материалы/номер-материала/2.4681.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/2.4681.md zh: https://steelequivalents.com/zh/材料/材料编号/2.4681.md ja: https://steelequivalents.com/ja/材料/材料番号/2.4681.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/2.4681.md ko: https://steelequivalents.com/ko/재료/재료번호/2.4681.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/2.4681.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/2.4681.md content_hash: sha256:8d0d8ddf0d73155b3b2c587b90ec9678eb209590ca7c05377ad8447c751b5faa 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/material-no/2.4681 > Canonical URL: https://steelequivalents.com/materials/material-no/2.4681 > 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. Material number · Europe · 1 designation # 2.4681 2.4681 is the material number of the grade also listed as CoCr26Ni9Mo5W. It is a material in the category Nickel and cobalt alloys. We list 1 designations recorded for this grade, in the standards DIN / EN. - ***Material no.* **2.4681**** - [*Category* **Nickel and cobalt alloys · 87 grades**](/categories/nickel-and-cobalt-alloys "Category: Nickel and cobalt alloys · 87 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=bd628d02-8a7a-4298-861e-84ab75a5b3dc "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/2.4681.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN CoCr26Ni9Mo5W This grade’s own name](/materials/din-en/cocr26ni9mo5w "DIN / EN CoCr26Ni9Mo5W") ## About Nickel and cobalt alloys Nickel and cobalt alloys are metallic materials whose properties are developed through nickel-, cobalt-, or combined alloying systems. They are characterised by strong resistance to corrosion, oxidation, wear, and loss of strength at elevated temperatures, making them suitable for turbine components, chemical-processing equipment, and other demanding high-temperature applications. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 1 designations · 1 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 · 1 - [CoCr26Ni9Mo5W This grade’s own name](/materials/din-en/cocr26ni9mo5w "DIN / EN CoCr26Ni9Mo5W") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 10 elements on file · weight % What this alloy is Fe Cr Ni Mo Iron — the balance, never listed by a standard — 54.9 % Cr — 25.5 % Ni — 9 % Mo — 5 % Traces & impurities · 5.6 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 1 — Unusual | | Si | ≤ 1 | | Mn | ≤ 1.5 | | Cr | 23.5–27.5 | | Mo | 4–6 | | Ni | 7–11 | | W | 1–3 | | Co | Balance | | N | 0.12 | | Fe | 1–3 | Carbon Silicon Manganese Chromium Molybdenum Nickel Tungsten Cobalt Nitrogen Iron 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 | ≤1,00 | — | 1.000 | Max | | N | 0,12 | 0.120 | 0.120 | Exact | | Si | ≤1,00 | — | 1.000 | Max | | Cr | 23,5-27,5 | 23.500 | 27.500 | Range | | Mn | ≤1,50 | — | 1.500 | Max | | Fe | 1,00-3,00 | 1.000 | 3.000 | Range | | Co | Rest/Bal. | 45.880 | 63.380 | Balance | | Ni | 7,00-11,0 | 7.000 | 11.000 | Range | | Mo | 4,00-6,00 | 4.000 | 6.000 | Range | | W | 1,00-3,00 | 1.000 | 3.000 | Range | 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 This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here. ## Physical & mechanical properties Density 8,48 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. ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 2.4, a shared category, and a published range for Co / Cr 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. [G-CoCr25NiW 2.4682 Co Rest/Bal. · Cr 24,5-26,5 - ΔCo 0.63 - ΔCr 0.00 - 2 designations](/materials/din-en/g-cocr25niw "G-CoCr25NiW")[CoCr28MoNi 2.4979 Co Rest/Bal. · Cr 27,0-29,0 - ΔCo 8.24 - ΔCr 2.50 - 2 designations](/materials/din-en/cocr28moni "CoCr28MoNi") ## 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=bd628d02-8a7a-4298-861e-84ab75a5b3dc "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/2.4681.pdf "Datasheet as PDF")