1.3544
1.3544 is the material number of the grade also listed as S44004. It is a material in the category Bearing steels. We list 20 designations recorded for this grade, in the standards UNS, AISI / SAE, ASTM, SAE AMS, JIS and GB.
- Material no. 1.3544
- Category Bearing steels · 17 grades
- Designations 20
About Bearing steels
Bearing steels are high-carbon steels designed for rolling-element bearings and other components exposed to repeated contact loading. They are characterised by high hardness, wear resistance and resistance to rolling-contact fatigue after suitable heat treatment. They are used for bearing rings, races and rolling elements where reliable operation under cyclic loads is required.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Also known as
20 designations · 6 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
8 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 |
|---|---|
0.95–1.1 | |
≤ 1 | |
≤ 1 | |
0.025 | |
0.015 | |
16–18 | |
0.35–0.75 | |
0.5 |
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 | 0,95-1,10 | 0.950 | 1.100 | Range |
| Si | ≤1,00 | — | 1.000 | Max |
| P | 0,025 | 0.025 | 0.025 | Exact |
| S | 0,015 | 0.015 | 0.015 | Exact |
| Cr | 16,0-18,0 | 16.000 | 18.000 | Range |
| Mn | ≤1,00 | — | 1.000 | Max |
| Ni | 0,5 | 0.500 | 0.500 | Exact |
| Mo | 0,35-0,75 | 0.350 | 0.750 | 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.
Similar grades — and why
Selection rule, stated so you can disagree with it: same number class 1.3, a shared category, and a published range for Cr / Mo 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.