Steel khvg
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХВГ |
| Designation GOST Latin |
XBG |
| Transliteration |
HVG |
| The 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 |
| Sectional and shaped rolling |
В22 |
GOST 1133-71, GOST 2590-2006, GOST 2591-2006 |
| Sheets and stripes |
В33 |
GOST 4405-75, TU 14-131-971-2001 |
| Sectional and shaped rolling |
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 |
| Bulls. Blanks. 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 |
The rest |
≤0.3 |
≤0.15 |
≤0.03 |
≤0.2 |
1.2-1.6 |
Fe is the basis.
Physical characteristics
| Temperature |
r, кг/м3 |
R, НОм · м |
a, 10-6 1/°С |
| 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. |
| Propensity to temper brittleness |
Malosolone. |
| Forging temperature |
Beginning - 1070 °C, the end - 860 °C. the Cooling is slow. |
| Flock-sensitive sensitivity |
Sensitive. |
| Workability by cutting |
In hot-rolled condition, when blower SB 235 HB=760 MPa Kn TV.SPL.=A 0.75 Kn b.St.=0,35. |
| Grindability |
With a hardness of HRC 59-61 reduced; at the HRC 55-57 - satisfactory. |
