F.131
F.131 is a designation in UNE for the material held under material number 1.3505, also listed as 100Cr6. It is a material in the category Bearing steels. We list 61 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, SAE AMS, JIS, GB, GOST, UNI, SS, ČSN, STN, COPANT, PN, MSZ, AS / NZS, STAS, BDS and KS.
- Material no. 1.3505
- Category Bearing steels · 17 grades
- Designations 61
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
61 designations · 23 standards · nothing hidden- 100Indicative
- 100Cr6Indicative
- Cr6Indicative
- F.131Indicative
- F.1310Indicative
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 | |
0.15–0.35 | |
0.25–0.45 | |
0.025 | |
0.015 | |
1.35–1.6 | |
≤ 0.1 | |
≤ 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 | 0,15-0,35 | 0.150 | 0.350 | Range |
| P | 0,025 | 0.025 | 0.025 | Exact |
| S | 0,015 | 0.015 | 0.015 | Exact |
| Cr | 1,35-1,60 | 1.350 | 1.600 | Range |
| Mn | 0,25-0,45 | 0.250 | 0.450 | Range |
| Cu | ≤0,30 | — | 0.300 | Max |
| Mo | ≤0,10 | — | 0.100 | 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.
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
2 conditions · 6 valuessplav| Dimensionmm | RmN/mm² | ReN/mm² | A5% | Z% | KCUkJ/m² |
|---|---|---|---|---|---|
| Ø 25 | 620 | 370 | 15 | 40 | 490 |
splav| Delivery state | HB |
|---|---|
| (annealing) , GOST 4543-71 | 229 |
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.
Heat treatment
GB /T 1299-2025
- Quenching830–860 °CCooling Oil
Supply condition
- QuenchingTest specimen
- AnnealingSupply condition
- Spheroidize annealing
- Annealing
Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied.
Source: www.caishuku.com
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.