1.3503
1.3503 is the material number of the grade also listed as 105Cr4. It is a material in the category Bearing steels. We list 3 designations recorded for this grade, in the standards DIN / EN, UNS and AISI / SAE.
- Material no. 1.3503
- Category Bearing steels · 17 grades
- Designations 3
If you came for one of these
The most-used names for this grade.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
3 designations · 3 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
6 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 |
|---|---|
1–1.1 | |
0.15–0.35 | |
0.25–0.4 | |
0.03 | |
0.025 | |
0.9–1.15 |
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 | 1,00-1,10 | 1.000 | 1.100 | Range |
| Si | 0,15-0,35 | 0.150 | 0.350 | Range |
| P | 0,03 | 0.030 | 0.030 | Exact |
| S | 0,025 | 0.025 | 0.025 | Exact |
| Cr | 0,90-1,15 | 0.900 | 1.150 | Range |
| Mn | 0,25-0,40 | 0.250 | 0.400 | 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.
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.