Steel Kh12

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.