S47250
S47250 is a designation in GB for the material held under material number 1.4938, also listed as X12CrNiMoV12-3. It is a material in the category High-temperature steels. We list 7 designations recorded for this grade, in the standards DIN / EN, AFNOR and GB.
If you came for one of these
The most-used names for this grade.About High-temperature steels
High-temperature steels are steels designed to retain useful strength and structural stability during exposure to elevated temperatures. Their alloying systems provide resistance to oxidation, creep and loss of mechanical properties during prolonged heating, making them suitable for furnace components, heat exchangers, boilers and other hot-service equipment.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Also known as
7 designations · 3 standards · nothing hidden- 10Cr12Ni3Mo2VNIndicative
- S47250Indicative
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 |
|---|---|
0.08–0.15 | |
≤ 0.5 | |
0.4–0.9 | |
0.025 | |
0.015 | |
11–12.5 | |
1.5–2 | |
2–3 | |
0.25–0.4 | |
0.02–0.04 |
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 | 0,08-0,15 | 0.080 | 0.150 | Range |
| N | 0,020-0,040 | 0.020 | 0.040 | Range |
| Si | ≤0,50 | — | 0.500 | Max |
| P | 0,025 | 0.025 | 0.025 | Exact |
| S | 0,015 | 0.015 | 0.015 | Exact |
| V | 0,25-0,40 | 0.250 | 0.400 | Range |
| Cr | 11,0-12,5 | 11.000 | 12.500 | Range |
| Mn | 0,40-0,90 | 0.400 | 0.900 | Range |
| Ni | 2,00-3,00 | 2.000 | 3.000 | Range |
| Mo | 1,50-2,00 | 1.500 | 2.000 | 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.
Properties by condition
1 conditions · 1 valuessteelnumber| Delivery state | HB |
|---|---|
| Soft annealed | 311 |
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.
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.