Steel 5KHNM
Designation
| Name |
The value |
| Designation GOST Cyrillic |
5ХНМ |
| Designation GOST Latin |
5XHM |
| Transliteration |
5HNM |
| The chemical elements |
5CrНMo |
Description
5KHNM steel is used: for the manufacture of forgings parts, General engineering; hammer stamps vapor and pneumatic hammers weight of falling parts over 3 tons; press tools and dies high-speed stamping machine for hot deforming of light non-ferrous alloys; blocks of matrices for inserts of horizontal forging machines; solid-rolled rings for different purposes.
Note
In the manufacture of forgings from ingots weighing more than 21 tons casting steel must be made in a vacuum.
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, OST 1 92049-76, TU 14-1-1226-75, TU 14-11-245-88 |
| Bulls. Blanks. Slabs |
В31 |
OST 24.952.01-89, TU 108.06.109-87 |
| Metal forming. Forgings |
В03 |
TU 108.11.917-87 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Ti |
Mo |
W |
| GOST 5950-2000 |
0.5-0.6 |
≤0.03 |
≤0.03 |
0.5-0.8 |
0.5-0.8 |
0.1-0.4 |
1.4-1.8 |
The rest |
≤0.3 |
≤0.15 |
≤0.03 |
0.15-0.3 |
≤0.2 |
Fe is the basis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
Brinell hardness number, MPa |
HRC |
| Forgings. Quenching in oil from 850 °C + Vacation at 460-520 °C |
| 100-200 |
≥1420 |
≥1570 |
≥9 |
≥35 |
≥343 |
375-429 |
42-47 |
| Forgings 100-200 mm. Quenching in oil from 850 °C + Vacation at 450 °C |
| - |
- |
- |
- |
- |
- |
- |
≥43 |
| Forgings. Quenching in oil from 850 °C + Vacation at 460-520 °C |
| 200-300 |
≥1270 |
≥1470 |
≥11 |
≥38 |
≥440 |
352-397 |
40-44 |
| Forgings 100-200 mm. Quenching in oil from 850 °C + Vacation at 450 °C |
| - |
- |
- |
- |
- |
- |
- |
≥39 |
| Forgings. Quenching in oil from 850 °C + Vacation at 460-520 °C |
| 300-500 |
≥1130 |
≥1320 |
≥12 |
≥36 |
≥490 |
321-375 |
37-42 |
| Forgings 100-200 mm. Quenching in oil from 850 °C + Vacation at 450 °C |
| - |
- |
- |
- |
- |
- |
- |
≥37 |
| Forgings. Quenching in oil from 850 °C + Vacation at 460-520 °C |
| 500-700 |
≥930 |
≥1180 |
≥15 |
≥40 |
≥784 |
302-341 |
35-39 |
| 100 |
- |
- |
- |
- |
- |
- |
≥57 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
| HRC |
Rockwell hardness (indenter diamond spheroconical) |
Physical characteristics
| Temperature |
l, Вт/(м · °С) |
R, НОм · м |
a, 10-6 1/°С |
| 100 |
38 |
300 |
- |
| 200 |
40 |
250 |
126 |
| 300 |
42 |
200 |
- |
| 400 |
42 |
160 |
126 |
| 500 |
44 |
- |
- |
| 600 |
46 |
- |
142 |
| 800 |
- |
- |
142 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
Technological properties
| Name |
The value |
| Weldability |
does not apply to welded structures. |
| Propensity to temper brittleness |
tend not |
| Forging temperature |
Start - 1240 °C, the end - 750 °C. the cross Sections up to 100 mm ogledate in the air, 101-350 mm - in the pit. |
| Flock-sensitive sensitivity |
sensitive |
| Workability by cutting |
In the annealed condition with blower SB 286 HB=900 MPa Kn TV.SPL.=0.6 Kn b.St.=0.3 |
