X155CrVMo12-1
X153CrMoV12 is a material in the category Tool steels for cold work, held under material number 1.2379. We list 41 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, ČSN, PN, SRPS, HRN, STN, MSZ, BDS, ÖNORM and KS. Its recorded composition includes C 1.45–1.6%, Si 0.1–0.6%, V 0.7–1%, Cr 11–13% and Mo 0.7–1%. Recorded mechanical properties include HB 255. Its recorded density is 7.7 g/cm³. Further recorded physical values: ρ el. 640 nΩ·m. Recorded transformation points: Ac1 810 °C, Ac3 860 °C, Ar1 760 °C and Ar3 780 °C. It is recorded as not intended for welding.
If you came for one of these
The most-used names for this grade.About Tool steels for cold work
Cold-work tool steels are high-strength tool materials designed for shaping, cutting and forming operations carried out without significant heating of the workpiece. They are characterised by high hardness, wear resistance and the ability to retain a sharp or precise working edge, making them suitable for dies, punches, cutting tools and other tooling exposed to repeated mechanical contact.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Also known as
42 designations · 21 standards · nothing hidden- X153CrMoV12This grade’s own name
- X155CrVMo12-1This grade’s own nameWithdrawn
- X165CrMoV12Indicative
Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.
Chemical composition
8 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 |
|---|---|
1.45–1.6 | |
0.1–0.6 | |
0.2–0.6 | |
0.03 | |
0.03 | |
11–13 | |
0.7–1 | |
0.7–1 |
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 | 1,45-1,60 | 1.450 | 1.600 | Range |
| Si | 0,10-0,60 | 0.100 | 0.600 | Range |
| P | 0,03 | 0.030 | 0.030 | Exact |
| S | 0,03 | 0.030 | 0.030 | Exact |
| V | 0,70-1,00 | 0.700 | 1.000 | Range |
| Cr | 11,0-13,0 | 11.000 | 13.000 | Range |
| Mn | 0,20-0,60 | 0.200 | 0.600 | Range |
| Mo | 0,70-1,00 | 0.700 | 1.000 | 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
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
4 conditions · 5 valuessteeljis| Delivery state | HB | HRC |
|---|---|---|
| Annealed | 255 | — |
| Quenched and tempered | — | 58 |
steelnumber| Delivery state | HB |
|---|---|
| Soft annealed | 255 |
splav| Delivery state | HB |
|---|---|
| (annealing) , GOST 5950-2000 | 255 |
splav| Temperature°C | Electrical resistivitynΩ·m |
|---|---|
| 20 | 640 |
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.
Similar grades — and why
Selection rule, stated so you can disagree with it: same number class 1.2, a shared category, and a published range for Cr / V 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.