--- title: "ENi6025 — Nickel and cobalt alloys" description: "ENi6025 in ISO: material number 2.4633, also listed as NiCr25FeAlY. Category: Nickel and cobalt alloys. Designations recorded for this grade: 15." canonical: https://steelequivalents.com/materials/iso/eni6025 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/iso/eni6025.md cs: https://steelequivalents.com/cs/materiály/iso/eni6025.md de: https://steelequivalents.com/de/werkstoffe/iso/eni6025.md es: https://steelequivalents.com/es/materiales/iso/eni6025.md fr: https://steelequivalents.com/fr/matériaux/iso/eni6025.md hu: https://steelequivalents.com/hu/anyagok/iso/eni6025.md it: https://steelequivalents.com/it/materiali/iso/eni6025.md nl: https://steelequivalents.com/nl/materialen/iso/eni6025.md pl: https://steelequivalents.com/pl/materiały/iso/eni6025.md pt: https://steelequivalents.com/pt/materiais/iso/eni6025.md ru: https://steelequivalents.com/ru/материалы/iso/eni6025.md tr: https://steelequivalents.com/tr/malzemeler/iso/eni6025.md zh: https://steelequivalents.com/zh/材料/iso/eni6025.md ja: https://steelequivalents.com/ja/材料/iso/eni6025.md ar: https://steelequivalents.com/ar/المواد/iso/eni6025.md ko: https://steelequivalents.com/ko/재료/iso/eni6025.md pt-br: https://steelequivalents.com/pt-br/materiais/iso/eni6025.md hi: https://steelequivalents.com/hi/सामग्री/iso/eni6025.md content_hash: sha256:b843e4a6e2e3936931602ddc220672e859717ae407717a1aa5b10d59783aecce 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/eni6025 > Canonical URL: https://steelequivalents.com/materials/iso/eni6025 > 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 · 15 designations # ENi6025 ENi6025 is a designation in ISO for the material held under material number 2.4633, also listed as NiCr25FeAlY. It is a material in the category Nickel and cobalt alloys. We list 15 designations recorded for this grade, in the standards DIN / EN, UNS, ASTM and ISO. - [*Material no.* **2.4633**](/materials/material-no/2.4633 "Material no.: 2.4633") - [*Category* **Nickel and cobalt alloys · 87 grades**](/categories/nickel-and-cobalt-alloys "Category: Nickel and cobalt alloys · 87 grades") - *Designations* **15** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=a0c343e3-ae77-414a-9974-1309e32bd3aa&designation=46553ec8-4d7e-4a0a-a60d-d824564fa97d "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/iso/eni6025.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN NiCr25FeAlY This grade’s own name](/materials/din-en/nicr25fealy "DIN / EN NiCr25FeAlY") - [UNS N06025 This grade’s own name](/materials/uns/n06025 "UNS N06025") ## 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 15 designations · 4 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 - [NiCr25FeAlY This grade’s own name](/materials/din-en/nicr25fealy "DIN / EN NiCr25FeAlY") UNS United States · 1 - [N06025 This grade’s own name](/materials/uns/n06025 "UNS N06025") ASTM United States · 9 - [B163 Indicative](/materials/astm/b163 "ASTM B163") - [B166 Indicative](/materials/astm/b166 "ASTM B166") - [B167 Indicative](/materials/astm/b167 "ASTM B167") - [B168 Indicative](/materials/astm/b168 "ASTM B168") - [B366 Indicative](/materials/astm/b366 "ASTM B366") - [B462 Indicative](/materials/astm/b462 "ASTM B462") - [B517 Indicative](/materials/astm/b517 "ASTM B517") - [B546 Indicative](/materials/astm/b546 "ASTM B546") - [B564 Indicative](/materials/astm/b564 "ASTM B564") ISO International · 4 - [BNI6025 Indicative](/materials/iso/bni6025 "ISO BNI6025") - **ENi6025 Indicative** - [Ni6025 Indicative](/materials/iso/ni6025 "ISO Ni6025") - [NiCr25Fe10AlY Indicative](/materials/din-en/nicr25fe10aly "ISO NiCr25Fe10AlY") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 13 elements on file · weight % What this alloy is Fe Cr Al Si Iron — the balance, never listed by a standard — 71.3 % Cr — 25 % Al — 2.1 % Si — 0.5 % Traces & impurities · 1.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.15–0.25 — Unusual | | Si | ≤ 0.5 | | Mn | ≤ 0.5 | | P | 0.02 | | S | 0.01 | | Cr | 24–26 | | Ni | Balance | | Cu | ≤ 0.1 | | Al | 1.8–2.4 | | Ti | 0.1–0.2 | | Zr | 0.01–0.1 | | Fe | 8–11 | | Y | 0.05–0.12 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Nickel Copper Aluminium Titanium Zirconium Iron Yttrium 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 | 0,15-0,25 | 0.150 | 0.250 | Range | | Al | 1,80-2,40 | 1.800 | 2.400 | Range | | Si | ≤0,50 | — | 0.500 | Max | | P | 0,02 | 0.020 | 0.020 | Exact | | S | 0,01 | 0.010 | 0.010 | Exact | | Ti | 0,10-0,20 | 0.100 | 0.200 | Range | | Cr | 24,0-26,0 | 24.000 | 26.000 | Range | | Mn | ≤0,50 | — | 0.500 | Max | | Fe | 8,00-11,0 | 8.000 | 11.000 | Range | | Ni | Rest/Bal. | 58.800 | 65.860 | Balance | | Cu | ≤0,10 | — | 0.100 | Max | | Y | 0,05-0,12 | 0.050 | 0.120 | Range | | Zr | 0,01-0,10 | 0.010 | 0.100 | 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 Not enough recorded composition to predict a transformation temperature for this grade — missing: Ni, Mo. ## 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. ## 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 Ni / 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. [NiCr23Mo16Al 2.4605 Ni Rest/Bal. · Cr 22,0-24,0 - ΔNi 2.83 - ΔCr 2.00 - 5 designations](/materials/din-en/nicr23mo16al "NiCr23Mo16Al")[NiCr28FeSiCe 2.4889 Ni ≥45,0 · Cr 26,0-29,0 - ΔNi 17.33 - ΔCr 2.50 - 1 designations](/materials/din-en/nicr28fesice "NiCr28FeSiCe") ## 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=a0c343e3-ae77-414a-9974-1309e32bd3aa&designation=46553ec8-4d7e-4a0a-a60d-d824564fa97d "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/iso/eni6025.pdf "Datasheet as PDF")