--- title: "1.4980 — High-temperature steels" description: "1.4980 is the material number of the grade also listed as X5NiCrTi26-15. Category: High-temperature steels. Designations recorded for this grade: 33." canonical: https://steelequivalents.com/materials/material-no/1.4980 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/1.4980.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/1.4980.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/1.4980.md es: https://steelequivalents.com/es/materiales/número-de-material/1.4980.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/1.4980.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/1.4980.md it: https://steelequivalents.com/it/materiali/numero-materiale/1.4980.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/1.4980.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/1.4980.md pt: https://steelequivalents.com/pt/materiais/número-do-material/1.4980.md ru: https://steelequivalents.com/ru/материалы/номер-материала/1.4980.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/1.4980.md zh: https://steelequivalents.com/zh/材料/材料编号/1.4980.md ja: https://steelequivalents.com/ja/材料/材料番号/1.4980.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/1.4980.md ko: https://steelequivalents.com/ko/재료/재료번호/1.4980.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/1.4980.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/1.4980.md content_hash: sha256:ed153c9245128aa267f909030d03ed3596a50f1b948fd3b29b1b68c1d6760bd0 generated: 2026-09-24 --- > **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/1.4980 > Canonical URL: https://steelequivalents.com/materials/material-no/1.4980 > 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 · 33 designations # 1.4980 1.4980 is the material number of the grade also listed as X5NiCrTi26-15. It is a material in the category High-temperature steels. We list 33 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, SAE AMS, GB and GOST. - ***Material no.* **1.4980**** - [*Category* **High-temperature steels · 40 grades**](/categories/high-temperature-steels "Category: High-temperature steels · 40 grades") - *Designations* **33** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=558b4c1b-3935-4a0d-91f7-274184c86a20 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4980.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X6NiCrTiMoVB25-15-2 This grade’s own name](/materials/din-en/x6nicrtimovb25-15-2 "DIN / EN X6NiCrTiMoVB25-15-2") - [UNS S66286 This grade’s own name · 6 grades on that route](/materials/uns/s66286 "UNS S66286") - [AISI / SAE 660 This grade’s own name · 5 grades on that route](/materials/aisi-sae/660 "AISI / SAE 660") ## About High-temperature steels High-temperature steels are steels designed to retain useful strength and structural stability during exposure to elevated temperatures. Their alloying systems provide resistance to oxidation, creep and loss of mechanical properties during prolonged heating, making them suitable for furnace components, heat exchangers, boilers and other hot-service equipment. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 33 designations · 9 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 · 3 - [X5NiCrTi26-15 This grade’s own name Withdrawn](/materials/din-en/x5nicrti26-15 "DIN / EN X5NiCrTi26-15") - [X6NiCrTiMoVB25-15-2 This grade’s own name](/materials/din-en/x6nicrtimovb25-15-2 "DIN / EN X6NiCrTiMoVB25-15-2") - [Z6NCTDV25-15 Indicative](/materials/din-en/z6nctdv25-15 "DIN / EN Z6NCTDV25-15") UNS United States · 2 - [K66286 Indicative](/materials/uns/k66286 "UNS K66286") - [S66286 This grade’s own name](/materials/uns/s66286 "UNS S66286") AISI / SAE United States · 3 - [660 This grade’s own name](/materials/aisi-sae/660 "AISI / SAE 660") - [663 This grade’s own name](/materials/aisi-sae/663 "AISI / SAE 663") - [S66286 Indicative](/materials/uns/s66286 "AISI / SAE S66286") ASTM United States · 2 - [A453 Indicative](/materials/astm/a453 "ASTM A453") - [A638 Indicative](/materials/astm/a638 "ASTM A638") BS United Kingdom · 1 - [286 S 31 Indicative](/materials/bs/286-s-31 "BS 286 S 31") AFNOR France · 6 - [X.N26T.W Indicative](/materials/afnor/x-n26t-w "AFNOR X.N26T.W") - [XN26AW Indicative](/materials/afnor/xn26aw "AFNOR XN26AW") - [Z5NCTDV25-15B Indicative](/materials/afnor/z5nctdv25-15b "AFNOR Z5NCTDV25-15B") - [Z5NCTDV26-15B Indicative](/materials/afnor/z5nctdv26-15b "AFNOR Z5NCTDV26-15B") - [Z6NCTDV15-15B Indicative](/materials/afnor/z6nctdv15-15b "AFNOR Z6NCTDV15-15B") - [Z6NCTDV25-15 Indicative](/materials/din-en/z6nctdv25-15 "AFNOR Z6NCTDV25-15") SAE AMS United States / Aerospace · 12 - [5525 Indicative plate sheet](/materials/ams/5525 "SAE AMS 5525") - [5526 Indicative](/materials/ams/5526 "SAE AMS 5526") - [5723 Indicative](/materials/ams/5723 "SAE AMS 5723") - [5726 Indicative bar](/materials/ams/5726 "SAE AMS 5726") - [5731 Indicative bar](/materials/ams/5731 "SAE AMS 5731") - [5732 Indicative bar](/materials/ams/5732 "SAE AMS 5732") - [5734 Indicative bar](/materials/ams/5734 "SAE AMS 5734") - [5737 Indicative bar](/materials/ams/5737 "SAE AMS 5737") - [5804 Indicative](/materials/ams/5804 "SAE AMS 5804") - [5853 Indicative bar](/materials/ams/5853 "SAE AMS 5853") - [5858 Indicative sheet strip](/materials/ams/5858 "SAE AMS 5858") - [5895 Indicative bar](/materials/ams/5895 "SAE AMS 5895") GB China · 1 - [06Cr15Ni25Ti2MoAlVB Indicative](/materials/gb/06cr15ni25ti2moalvb "GB 06Cr15Ni25Ti2MoAlVB") GOST Russia / CIS · 3 - [08Ch15N25T2MFR Indicative](/materials/gost/08ch15n25t2mfr "GOST 08Ch15N25T2MFR") - [08Kh15N25T2MFR Indicative](/materials/gost/08kh15n25t2mfr "GOST 08Kh15N25T2MFR") - [EP674 Indicative](/materials/gost/ep674 "GOST EP674") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 12 elements on file · weight % What this alloy is Fe Ni Cr Ti Iron — the balance, never listed by a standard — 53.1 % Ni — 25.5 % Cr — 14.8 % Ti — 2.1 % Traces & impurities · 4.5 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.03–0.08 | | Si | ≤ 1 | | Mn | 1–2 | | P | 0.025 | | S | 0.015 | | Cr | 13.5–16 | | Mo | 1–1.5 | | Ni | 24–27 | | V | 0.1–0.5 | | Al | ≤ 0.35 | | Ti | 1.9–2.3 | | B | 0.003–0.01 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Vanadium Aluminium Titanium Boron 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 | |---|---|---|---|---| | B | 0,003-0,010 | 0.003 | 0.010 | Range | | C | 0,03-0,08 | 0.030 | 0.080 | Range | | Al | ≤0,35 | — | 0.350 | Max | | Si | ≤1,00 | — | 1.000 | Max | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Ti | 1,90-2,30 | 1.900 | 2.300 | Range | | V | 0,10-0,50 | 0.100 | 0.500 | Range | | Cr | 13,5-16,0 | 13.500 | 16.000 | Range | | Mn | 1,00-2,00 | 1.000 | 2.000 | Range | | Ni | 24,0-27,0 | 24.000 | 27.000 | Range | | Mo | 1,00-1,50 | 1.000 | 1.500 | 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 7,94 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 1.4, 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. [S66286 1.4954 Ni 24,0-27,0 · Cr 13,5-16,0 - ΔNi 0.00 - ΔCr 0.00 - 14 designations](/materials/uns/s66286 "S66286") ## 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=558b4c1b-3935-4a0d-91f7-274184c86a20 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4980.pdf "Datasheet as PDF")