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
- Designations 9
If you came for one of these
The most-used names for this grade.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 hiddenEvery 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
Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.
| Element | % by weight |
|---|---|
≤ 0.08 | |
≤ 0.3 | |
≤ 0.3 | |
0.015 | |
0.015 | |
17–21 | |
2.8–3.3 | |
50–55 | |
≤ 0.3 | |
0.2–0.8 | |
0.7–1.1 | |
4.8–5.5 — | |
≤ 0.006 | |
≤ 24 |
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 publishedsource 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
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.