Designation
| Name |
The value |
| Designation GOST Cyrillic |
Х12 |
| Designation GOST Latin |
X12 |
| Transliteration |
H12 |
| By chemical elements |
Cr12 |
Description
X12 steel is used: for the manufacture of cold stamps high resistance to abrasion (mainly with working part rounded), not exposed to strong shocks and jolts; die plates and dies, eyes for the calibration metal rod under the knurling thread; bending and forming dies, complex dies sections body, which in the hardening should not be subjected to significant volume changes and warping; matrices and punches blanking and cutting dies; stampings of the active parts of electrical machines and electromagnetic systems of electric devices.
Standards
| Name |
Code |
Standards |
| Bars and shapes |
В22 |
GOST 1133-71, GOST 2590-2006, GOST 2591-2006 |
| Sheets and strips |
В33 |
GOST 4405-75, TU 14-131-971-2001 |
| Bars and shapes |
В32 |
GOST 5950-2000, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-11-245-88 |
| Blanks. Of the workpiece. Slabs |
В31 |
OST 24.952.01-89 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Ti |
Mo |
W |
| GOST 5950-2000 |
2-2.2 |
≤0.03 |
≤0.03 |
0.15-0.45 |
11.5-13 |
0.1-0.4 |
≤0.4 |
Rest |
≤0.3 |
≤0.15 |
≤0.03 |
≤0.2 |
≤0.2 |
Fe is the basis.
Technological properties
| Name |
The value |
| The temperature of forging |
Start - 1100 °C, the end - 850 °C slow Cooling in the wells. |
