Steel 08KH16N13M2B (ЭИ680)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Х16Н13М2Б |
| Designation GOST Latin |
08X16H13M2B |
| Transliteration |
08H16N13M2B |
| The chemical elements |
08Cr16Н13Mo2Nb |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ680 |
| Designation GOST Latin |
EI680 |
| Transliteration |
EhI680 |
| The chemical elements |
- |
Description
08KH16N13M2B steel is used: for the manufacture of forgings for rotors and disks, blades and bolts, long operating at temperatures up to +600 °C.
Note
Steel heat-resistant austenitic class.
The recommended maximum operating temperature for a very long time +600 °C.
The temperature of beginning of intensive scaling in air +850 °C.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В30 |
GOST 5632-72 |
| Sectional and shaped rolling |
В32 |
GOST 5949-75, TU 14-1-235-72, TU 14-11-245-88 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90 |
| Metal forming. Forgings |
В03 |
TU 108.02.118-86 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Ti |
Mo |
Nb |
W |
| GOST 5632-72 |
0.06-0.12 |
≤0.02 |
≤0.035 |
≤1 |
15-17 |
≤0.8 |
12.5-14.5 |
The rest |
≤0.3 |
≤0.2 |
≤0.2 |
2-2.5 |
0.9-1.3 |
≤0.2 |
Fe is the basis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
d4 |
y, % |
kJ/m2, кДж/м2 |
| Rolled sheet. Quenching in water from 1000-1080 °C |
| ≤3.9 |
≥230 |
≥550 |
- |
≥25 |
- |
≥784 |
| Bars hot rolled and forged according to GOST 5949-75. Annealing in air 1100-1130 °C |
|
≥215 |
≥550 |
≥40 |
- |
≥50 |
≥1176 |
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 |
| d4 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
a, 10-6 1/°С |
| 20 |
206 |
7960 |
- |
- |
| 100 |
200 |
- |
152 |
- |
| 200 |
191 |
- |
171 |
- |
| 300 |
183 |
- |
184 |
- |
| 400 |
174 |
- |
201 |
171 |
| 500 |
167 |
- |
217 |
174 |
| 600 |
158 |
- |
23 |
178 |
| 700 |
- |
- |
247 |
182 |
| 800 |
- |
- |
- |
186 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
| a |
The coefficient of linear expansion |
