Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Х15Н25М3ТЮБ |
| Designation GOST Latin |
08X15H25M3TJuB |
| Transliteration |
08H15N25M3TYuB |
| By chemical elements |
08Cr15Н25Mo3TiAlNb |
Description
08Х15Н25М3ТЮБ steel is used: for the manufacture of disks, blades and various fasteners and elements in turbine construction operating at temperatures up to +700 °C.
Note
Dispersion-hardened steel.
Analogue is the steel Grade according to ASTM 662 SA-638/SA-638M.
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Al |
B |
Ti |
Mo |
|
≤0.1 |
≤0.02 |
≤0.02 |
1-2 |
14-16 |
≤0.5 |
24-28 |
Rest |
0.8-1.3 |
≤0.01 |
0.9-1.3 |
2.8-3.5 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Rental in the state of delivery (indicate the direction of cutting out of samples) |
| 400 |
≥440 |
≥840 |
≥18 |
≥38 |
≥500 |
≥207 |
| 45-75 |
≥430 |
≥910 |
≥34 |
≥49 |
≥1800 |
- |
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 |
Physical characteristics
| Temperature |
Е, HPa |
r, kg/m3 |
a, 10-6 1/°C |
| 20 |
202 |
8160 |
- |
| 100 |
199 |
- |
141 |
| 200 |
194 |
- |
157 |
| 300 |
190 |
- |
161 |
| 400 |
183 |
- |
163 |
| 500 |
177 |
- |
168 |
| 600 |
169 |
- |
173 |
| 700 |
161 |
- |
174 |
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 |
| Features of heat treatment |
High mechanical properties are achieved by appropriate heat treatment in solid solution with subsequent precipitation-hardening. |
