--- title: "Ni 7718 — Resistance heating alloys" description: "Ni 7718 is the material number of the grade also listed as NiCr19Fe19Nb5Mo3. It is a material in the category Resistance heating alloys." canonical: https://steelequivalents.com/materials/material-no/ni-7718 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/ni-7718.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/ni-7718.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/ni-7718.md es: https://steelequivalents.com/es/materiales/número-de-material/ni-7718.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/ni-7718.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/ni-7718.md it: https://steelequivalents.com/it/materiali/numero-materiale/ni-7718.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/ni-7718.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/ni-7718.md pt: https://steelequivalents.com/pt/materiais/número-do-material/ni-7718.md ru: https://steelequivalents.com/ru/материалы/номер-материала/ni-7718.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/ni-7718.md zh: https://steelequivalents.com/zh/材料/材料编号/ni-7718.md ja: https://steelequivalents.com/ja/材料/材料番号/ni-7718.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/ni-7718.md ko: https://steelequivalents.com/ko/재료/재료번호/ni-7718.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/ni-7718.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/ni-7718.md content_hash: sha256:8e40ffc5a496a6a6e31df7bc8e0dadfc850973925b5fa7257ed87c1970c0c89e 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/ni-7718 > Canonical URL: https://steelequivalents.com/materials/material-no/ni-7718 > 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 · 9 designations # Ni 7718 Ni 7718 is the material number of the grade also listed as NiCr19Fe19Nb5Mo3. It is a material in the category Resistance heating alloys. We list 9 designations recorded for this grade, in the standards DIN / EN, UNS, ASTM and SAE AMS. - ***Material no.* **Ni 7718**** - [*Category* **Resistance heating alloys · 9 grades**](/categories/resistance-heating-alloys "Category: Resistance heating alloys · 9 grades") - *Designations* **9** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=264ceec5-2af4-49c2-bfe2-22569633f160 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/ni-7718.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN NiCr19Fe19Nb5Mo3 This grade’s own name · 2 grades on that route](/materials/din-en/nicr19fe19nb5mo3 "DIN / EN NiCr19Fe19Nb5Mo3") - [UNS N07718 This grade’s own name · 3 grades on that route](/materials/uns/n07718 "UNS N07718") ## About Resistance heating alloys Resistance heating alloys are metallic alloys designed to generate heat when an electric current passes through them. They combine electrical resistance with stability during prolonged heating, making them suitable for heating elements in furnaces, ovens and industrial equipment. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 9 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 - [NiCr19Fe19Nb5Mo3 This grade’s own name](/materials/din-en/nicr19fe19nb5mo3 "DIN / EN NiCr19Fe19Nb5Mo3") UNS United States · 1 - [N07718 This grade’s own name](/materials/uns/n07718 "UNS N07718") ASTM United States · 3 - [B 637 Indicative](/materials/astm/b637 "ASTM B 637") - [B 670 Indicative](/materials/astm/b670 "ASTM B 670") - [F3055 Indicative](/materials/astm/f3055 "ASTM F3055") SAE AMS United States / Aerospace · 4 - [5596 Indicative coil plate sheet](/materials/ams/5596 "SAE AMS 5596") - [5662 Indicative bar powder](/materials/ams/5662 "SAE AMS 5662") - [5663 Indicative](/materials/ams/5663 "SAE AMS 5663") - [5664 Indicative powder](/materials/ams/5664 "SAE AMS 5664") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 14 elements on file · weight % What this alloy is Fe Ni Cr Nb Iron — the balance, never listed by a standard — 17.9 % Ni — 52.5 % Cr — 19 % Nb — 5.2 % Traces & impurities · 5.5 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.08 | | Si | ≤ 0.3 | | Mn | ≤ 0.3 | | P | 0.015 | | S | 0.015 | | Cr | 17–21 | | Mo | 2.8–3.3 | | Ni | 50–55 | | Cu | ≤ 0.3 | | Al | 0.2–0.8 | | Ti | 0.7–1.1 | | Nb | 4.8–5.5 — Unusual | | B | ≤ 0.006 | | Fe | ≤ 24 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Copper Aluminium Titanium Niobium Boron 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 | |---|---|---|---|---| | B | ≤0,006 | — | 0.006 | Max | | C | ≤0,08 | — | 0.080 | Max | | Al | 0,20-0,80 | 0.200 | 0.800 | Range | | Si | ≤0,30 | — | 0.300 | Max | | P | 0,015 | 0.015 | 0.015 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Ti | 0,70-1,10 | 0.700 | 1.100 | Range | | Cr | 17,0-21,0 | 17.000 | 21.000 | Range | | Mn | ≤0,30 | — | 0.300 | Max | | Fe | ≤24,0 | — | 24.000 | Max | | Ni | 50,0-55,0 | 50.000 | 55.000 | Range | | Cu | ≤0,30 | — | 0.300 | Max | | Nb | 4,80-5,50 | 4.800 | 5.500 | Range | | Mo | 2,80-3,30 | 2.800 | 3.300 | 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 7,85 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. ## 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=264ceec5-2af4-49c2-bfe2-22569633f160 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/ni-7718.pdf "Datasheet as PDF")