100CrMnMo8
100CrMnMo8 is a designation in DIN / EN for the material held under material number 1.3539, also listed as 100CrMnMoSi8-4-6. It is a material in the category Bearing steels. We list 2 designations recorded for this grade, in the standards DIN / EN.
- Material no. 1.3539
- Category Bearing steels · 17 grades
- Designations 2
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
2 designations · 1 standards · nothing hidden- 100CrMnMo8This grade’s own nameWithdrawn
- 100CrMnMoSi8-4-6This 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
10 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 |
|---|---|
0.93–1.05 | |
0.4–0.6 | |
0.8–1.1 | |
0.025 | |
0.015 | |
1.8–2.05 | |
0.5–0.6 | |
≤ 0.3 | |
≤ 0.05 | |
≤ 0.0015 |
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 | 0,93-1,05 | 0.930 | 1.050 | Range |
| O | ≤0,0015 | — | 0.002 | Max |
| Al | ≤0,050 | — | 0.050 | Max |
| Si | 0,40-0,60 | 0.400 | 0.600 | Range |
| P | 0,025 | 0.025 | 0.025 | Exact |
| S | 0,015 | 0.015 | 0.015 | Exact |
| Cr | 1,80-2,05 | 1.800 | 2.050 | Range |
| Mn | 0,80-1,10 | 0.800 | 1.100 | Range |
| Cu | ≤0,30 | — | 0.300 | Max |
| Mo | 0,50-0,60 | 0.500 | 0.600 | 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.
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 / Mn 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.