Designation
| Name |
The value |
| Designation GOST Cyrillic |
38Х2НМФ |
| Designation GOST Latin |
38X2HMF |
| Transliteration |
38H2NMF |
| By chemical elements |
38Cr2НMoV |
Description
Steel 38Х2НМФ applies: critical parts of heavy and transport engineering type axles, shafts etc. highly loaded parts and parts used in low temperatures.
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
V |
Mo |
|
0.32-0.42 |
≤0.03 |
≤0.03 |
0.5-0.8 |
1.8-2.3 |
0.17-0.37 |
0.6-0.9 |
0.08-0.15 |
0.2-0.3 |
Chemical composition is not verified by NTD. Total verified brands for chemical compounds: 2906 of 3316.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Forgings. Hardening + Vacation |
| - |
700 |
850 |
12 |
38 |
500 |
- |
| 300 |
700 |
850 |
12 |
38 |
500 |
- |
| Hardening 850-870 °C. Leave 620-650 °C. KCU (+20/-40) |
| 300-500 |
600 |
750 |
12 |
35 |
45/35 |
235 |
| 500-800 |
550 |
700 |
10 |
30 |
40/30 |
223 |
| 300 |
700 |
850 |
12 |
38 |
50/35 |
262 |
| Hardening 880 °C. Leave 640-650 °C. |
| 500 |
700-760 |
800-900 |
14-16 |
50-54 |
100-160 |
266 |
| 300 |
750 |
870 |
20 |
64 |
220 |
266 |
| 500 |
720 |
840 |
17 |
54 |
90 |
257 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| KCU |
Toughness |
| HB |
Brinell hardness number |
