1.7259
1.7259 is the material number of the grade also listed as 26CrMo7. It is a material in the category Hydrogen resistant steels. We list 1 designations recorded for this grade, in the standards DIN / EN.
- Material no. 1.7259
- Category Hydrogen resistant steels · 8 grades
- Designations 1
If you came for one of these
The most-used names for this grade.About Hydrogen resistant steels
Hydrogen resistant steels are steels designed to withstand hydrogen-related damage, including hydrogen embrittlement and hydrogen attack. They are used for pressure vessels, piping and process equipment exposed to hydrogen-containing environments, where resistance to hydrogen ingress and loss of toughness is important.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Also known as
1 designations · 1 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
7 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 |
|---|---|
0.22–0.3 | |
0.15–0.35 | |
0.5–0.7 | |
0.035 | |
0.035 | |
1.5–1.8 | |
0.2–0.25 |
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 | 0,22-0,30 | 0.220 | 0.300 | Range |
| Si | 0,15-0,35 | 0.150 | 0.350 | Range |
| P | 0,035 | 0.035 | 0.035 | Exact |
| S | 0,035 | 0.035 | 0.035 | Exact |
| Cr | 1,50-1,80 | 1.500 | 1.800 | Range |
| Mn | 0,50-0,70 | 0.500 | 0.700 | Range |
| Mo | 0,20-0,25 | 0.200 | 0.250 | 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: Ni.
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.