34CrAlS5
34CrAlS5 is a material in the category Nitriding steels, held under material number 1.8506. Its recorded composition includes C 0.3–0.37%, Al 0.8–1.2%, Si 0.15–0.4%, Cr 1–1.3% and Mn 0.6–0.9%. We list one designation recorded for this grade, in the standard UNS. Its recorded density is 7.85 g/cm³.
- Material no. 1.8506
- Category Nitriding steels · 11 grades
- Designations 2
If you came for one of these
The most-used names for this grade.About Nitriding steels
Nitriding steels are alloy steels designed for nitriding, a surface-hardening treatment that produces a hard, wear-resistant surface while retaining a tough supporting core. They are used for gears, shafts, dies and other components requiring resistance to wear, repeated loading and dimensional change in service.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Also known as
2 designations · 2 standards · nothing hidden- 34CrAlS5This 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
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 |
|---|---|
0.3–0.37 | |
0.15–0.4 | |
0.6–0.9 | |
0.1 — | |
0.07–0.11 — | |
1–1.3 | |
0.8–1.2 |
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 | 0,30-0,37 | 0.300 | 0.370 | Range |
| Al | 0,80-1,20 | 0.800 | 1.200 | Range |
| Si | 0,15-0,40 | 0.150 | 0.400 | Range |
| P | 0,1 | 0.100 | 0.100 | Exact |
| S | 0,07-0,11 | 0.070 | 0.110 | Range |
| Cr | 1,00-1,30 | 1.000 | 1.300 | Range |
| Mn | 0,60-0,90 | 0.600 | 0.900 | 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, 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.
Similar grades — and why
Selection rule, stated so you can disagree with it: same number class 1.8, a shared category, and a published range for Cr / Al 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.