Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХВГ |
| Designation GOST Latin |
XBG |
| Transliteration |
HVG |
| By chemical elements |
CrWMn |
Description
Khvg steel is used: for the manufacture measuring and cutting tools, for which an increased shrinkage during hardening is unacceptable, threaded gauges, broaches, long tap, long reamers, dies and other special tools, cold heading dies and punches, tooling.
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 14-1-734-73, 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 |
0.9-1.05 |
≤0.03 |
≤0.03 |
0.8-1.1 |
0.9-1.2 |
0.1-0.4 |
≤0.4 |
Rest |
≤0.3 |
≤0.15 |
≤0.03 |
≤0.2 |
1.2-1.6 |
Fe is the basis.
Physical characteristics
| Temperature |
r, kg/m3 |
R, Mr. · m |
a, 10-6 1/°C |
| 20 |
7850 |
380 |
- |
| 100 |
7830 |
- |
11 |
| 300 |
7760 |
- |
13 |
| 600 |
7660 |
- |
14 |
| 200 |
- |
- |
12 |
| 400 |
- |
- |
135 |
| 500 |
- |
- |
14 |
| 800 |
- |
- |
145 |
A description of the physical symbols
| Name |
Description |
| r |
Density |
| R |
UD. the resistivity |
| a |
The coefficient of linear expansion |
Technological properties
| Name |
The value |
| Weldability |
Does not apply to welded structures. |
| Склонность к отпускной хрупкости |
Malosolone. |
| The temperature of forging |
Beginning - 1070 °C, the end - 860 °C. the Cooling is slow. |
| Flock-sensitive sensitivity |
Sensitive. |
| Machinability |
In hot-rolled condition, when blower SB 235 HB=760 MPa Kn TV.SPL.=A 0.75 Kn b.St.=0,35. |
| Sanding behaviour |
With a hardness of HRC 59-61 reduced; at the HRC 55-57 - satisfactory. |
