100CrMnSi6-4
100CrMnSi6-4 is a material in the category Bearing steels, held under material number 1.3520. We list 32 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, GB, GOST, ČSN, PN, STN, MSZ, STAS and BDS. Its recorded composition includes C 0.93–1.05%, Si 0.45–0.75%, Cr 1.4–1.65%, Mn 1–1.2% and Cu ≤ 0.3%. Recorded mechanical properties include Rm 590–730 N/mm², Re 370–410 N/mm², A5 20%, HB 179–217, Z 45% and KCU 440 kJ/m². Its recorded density is 7.56–7.65 g/cm³. Further recorded physical values: E 211 GPa and α 13.4–13.6 ·10⁻⁶/K; several of these are temperature-dependent. Recorded transformation points: Ac1 750 °C, Ac3 910 °C and Ar1 688 °C.
- Material no. 1.3520
- Category Bearing steels · 17 grades
- Designations 33
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
33 designations · 17 standards · nothing hidden- 100CrMn6This grade’s own nameWithdrawn
- 100CrMnSi6-4This grade’s own name
- 100CrMnSi6-4Indicative
- 3520Indicative
Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.
Chemical composition
9 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 | |
0.45–0.75 | |
1–1.2 | |
0.025 | |
0.015 | |
1.4–1.65 | |
≤ 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 | 0,45-0,75 | 0.450 | 0.750 | Range |
| P | 0,025 | 0.025 | 0.025 | Exact |
| S | 0,015 | 0.015 | 0.015 | Exact |
| Cr | 1,40-1,65 | 1.400 | 1.650 | Range |
| Mn | 1,00-1,20 | 1.000 | 1.200 | Range |
| Cu | ≤0,30 | — | 0.300 | Max |
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.
Properties by condition
3 conditions · 10 valuessplav| Heat-treated condition | RmN/mm² | ReN/mm² | A5% | Z% | KCUkJ/m² |
|---|---|---|---|---|---|
| Steel | 590 – 730 | 370 – 410 | 20 | 45 | 440 |
splav| Delivery state | HB |
|---|---|
| (hot-rolled) , Rolled stock GOST 801-78 | 179 – 217 |
splav| Temperature°C | Densityg/cm³ | Elastic modulusGPa | Thermal expansion coefficient10^-6/K |
|---|---|---|---|
| 20 | 7.65 | 211 | — |
| 200 | — | — | 13.4 |
| 300 | — | — | 13.6 |
Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ.
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