Designation
| Name |
The value |
| Designation GOST Cyrillic |
26Х14Н2 |
| Designation GOST Latin |
26X14H2 |
| Transliteration |
26H14N2 |
| By chemical elements |
26Cr14Н2 |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП208 |
| Designation GOST Latin |
EP208 |
| Transliteration |
EhP208 |
| By chemical elements |
- |
Description
26Х14Н2 steel is used: for the manufacture methods of hot and cold deformation and machining parts with high ductility, load and operating at temperatures up to +450−500 °C, and products exposed to slightly aggressive media at room temperature; for the production of various parts for the aircraft industry.
Note
Steel corrosion-resistant martensitic class.
Standards
| Name |
Code |
Standards |
| Bars and shapes |
В22 |
GOST 1133-71, GOST 2590-2006, GOST 2591-2006 |
| Sheets and strips |
В33 |
GOST 4405-75 |
| Bars and shapes |
В32 |
TU 14-1-2139-77 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
| TU 14-1-2139-77 |
0.22-0.29 |
≤0.03 |
≤0.03 |
0.3-0.7 |
13.5-15 |
0.3-0.7 |
2-2.7 |
Rest |
Fe is the basis.
According to TU 14-1-2139-77, the following deviations in chemical composition in finished products are allowed, provided that the mechanical properties are satisfied: chroma ± 0.20%, nickel ± 0.30%. Since 01.01.1991 steel is not allowed to be used in newly created and modernized machinery.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Bars and strips steel hot-rolled and forged in the delivery condition on the other 14-1-2139-77. Quenching in oil with 930-950 °C + Vacation at 720-760 °C, cooling in oil or air |
| 20-25 |
≥590 |
≥780 |
≥45 |
≥294 |
≤269 |
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 |
| y |
The relative narrowing |
| KCU |
Toughness |
| HB |
Brinell hardness number |
Physical characteristics
| Temperature |
r, kg/m3 |
l, W/(m · °C) |
a, 10-6 1/°C |
| 20 |
7680 |
18 |
- |
| 100 |
- |
19 |
116 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
Technological properties
| Name |
The value |
| The temperature of forging |
Start - 1150 °C, the end - of 800 °C. Cooling is carried out slowly in the furnace. |
| Machinability |
Steel has the best machinability on the machines compared to the same steels. |
| Pressure treatment |
Well handled by various methods of hot and cold treatments. |
