GX7CrNiMoCuNb18-18
GX7CrNiMoCuNb18-18 is a material in the category Cast stainless steels, held under material number 1.4585. Its recorded composition includes C ≤ 0.08%, Cr 16.5–18.5%, Ni 19–21%, Cu 1.8–2.4% and Mo 2–2.5%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³.
About Cast stainless steels
Cast stainless steels are stainless-steel materials produced by casting, combining corrosion resistance with the ability to form complex component shapes. Their composition and mechanical behaviour vary by grade, and they are used for corrosion-resistant cast components such as pumps, valves and process equipment.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Chemical composition
9 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 | |
≤ 1.5 | |
≤ 2 | |
0.045 | |
0.03 | |
16.5–18.5 | |
2–2.5 | |
19–21 | |
1.8–2.4 |
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 | ≤0,08 | — | 0.080 | Max |
| Si | ≤1,50 | — | 1.500 | Max |
| P | 0,045 | 0.045 | 0.045 | Exact |
| S | 0,03 | 0.030 | 0.030 | Exact |
| Cr | 16,5-18,5 | 16.500 | 18.500 | Range |
| Mn | ≤2,00 | — | 2.000 | Max |
| Ni | 19,0-21,0 | 19.000 | 21.000 | Range |
| Cu | 1,80-2,40 | 1.800 | 2.400 | Range |
| Mo | 2,00-2,50 | 2.000 | 2.500 | Range |
- ≥8xC
- ≥8xC
- ≥8xC
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.
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.
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.