Ni48
Ni48 is a material in the category Controlled-expansion nickel-iron alloys, held under material number 1.3922. Its recorded composition includes C ≤ 0.05%, Si ≤ 0.3%, Mn ≤ 0.5% and Ni 46–49%. We list 3 designations recorded for this grade, in the standards UNS, ASTM and AFNOR. Its recorded density is 7.85 g/cm³.
If you came for one of these
The most-used names for this grade.About Controlled-expansion nickel-iron alloys
Controlled-expansion nickel-iron alloys are materials formulated to provide predictable thermal expansion and good dimensional stability. They are used for glass-to-metal seals, electronic packages and precision instruments where limiting thermal mismatch is important.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Also known as
4 designations · 4 standards · nothing hidden- Ni48This grade’s own name
Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.
Chemical composition
5 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 |
|---|---|
≤ 0.05 | |
≤ 0.3 | |
≤ 0.5 | |
46–49 | |
Balance |
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 |
|---|---|---|---|---|
| C | ≤0,05 | — | 0.050 | Max |
| Si | ≤0,30 | — | 0.300 | Max |
| Mn | ≤0,50 | — | 0.500 | Max |
| Fe | Rest/Bal. | 50.150 | 54.000 | Balance |
| Ni | 46,0-49,0 | 46.000 | 49.000 | 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
Not enough recorded composition to predict a transformation temperature for this grade — missing: Cr, Mo.
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.