Relevance
Heat-resistant alloy of KhN62MKYu (KhN62MKYu-VD, EI867-VD, EI867) is designed for manufacturing turbine blades operating at the temperature not higher than 900°C. In modern engines the material for turbine parts must have high resistance to destruction under low cycle and thermal fatigue which is the main cause of destruction today. The risk of fracture can be exacerbated by surface reactions associated with grain boundary loosening and gas corrosion. The main requirements to the material for the turbine blades are caused by the latest developments of the engine design, increased ductility, heat resistance, resistance to low cycle and thermal fatigue, as well as the resistance to the influence of gas media.
Percent xcost (GOST 5632-72)
| Fe |
C |
Si |
Mn |
Ni |
S |
P |
Cr |
Ce |
Mo |
W |
Co |
Al |
B |
|---|
| up to 4 |
up to 0.1 |
up to 0.6 |
up to 0.3 |
56.034 - 70 |
up to 0.011 |
to 0.015 |
8.5 - 10.5 |
to 0.02 |
9 - 11.5 |
4.3 - 6 |
4 - 6 |
4.2 - 4.9 |
up to 0.02 |
Physical characteristics of the alloy KhN62MVKYu.
| 1/Grad |
kg/m3 |
MPa |
Grad |
W/(m-grad) |
Ohm-m |
J/(kg-grad) |
|---|
| a 10 6 |
r |
E 10- 5 |
T |
l |
R 10 9 |
C |
| 16.9 |
|
|
900 |
|
|
|
| 16.4 |
|
|
800 |
|
|
|
| 15.6 |
|
|
700 |
|
|
|
| 14.7 |
|
|
600 |
|
|
|
| 14 |
|
|
500 |
|
|
|
| 13.7 |
|
|
400 |
|
|
|
| 13.4 |
|
|
300 |
|
|
|
| 13 |
|
|
200 |
|
|
|
| 12.6 |
|
|
100 |
|
|
|
| 11.5 |
|
|
20 |
|
|
|
Mechanical properties of KhN62MVKYu alloy.
| Products |
Size |
KCU |
y |
s in |
sT |
eq. |
Thermobore. |
|---|
| - |
mm |
kJ/m2 |
% |
MPa |
MPa |
- |
- |
| GOST 23 705-79, Bar |
|
147-490 |
11-28 |
980-1220 |
760-860 |
|
Hardening and aging |
Marking of physical properties of the alloy:
| Description |
Designation |
|---|
| - Alloy data acquisition temperature [Grad] |
- T |
| - Modulus of elasticity of the 1st kind, [MPa] |
- E |
| - Coefficient of thermal linear expansion (at 20°C), [1/Grad] |
-a |
| - Specific electrical resistance [Ohm-m] -R |
-R |
| - Specific gravity [g/cm3] -r |
-r |
| - Heat transfer coefficient [W/(m-grad)] -l |
-l |
| - Specific heat capacity (at 20°C), [J/(kg-grad) |
-C |
Marking of mechanical properties:
| Description |
Designation |
|---|
| - Limit of proportionality (yield strength for permanent deformation) [MPa] |
sT |
| - Tensile strength [MPa] |
sT |
| - Ratio constriction [ % ] |
y |
| - Tensile elongation [ % ] |
d5 |
| - Brinell hardness, in [MPa] |
HB |
| - Impact toughness [ kJ/m2 ] |
KCU |
Weldability:
| Designation |
Description |
|---|
| limited weldable |
- Must be preheated to 100-120°C with subsequent heat treatment |
| no restrictions |
- No need for preheating and final heat treatment |
| Difficult to weld |
- requires preheating to t ° 200-300 ° C with the final heat treatment |
Optimal price to buy
The range of products of CHN62MKYu by Evek GmbH satisfies any consumer. The price is determined by the technological features of production without including additional costs. All products are certified. With us it is easy to buy the necessary products in bulk for large-scale projects, we also offer favorable conditions for retail customers. Technological configuration of each production stage gives us the opportunity to fulfill individual orders of non-standard parameters. Products are manufactured by strictly following the technological process, which guarantees the highest quality, stored under cover or indoors to protect against mechanical damage, contact with moisture and aggressive substances. The terms of realization of orders are minimal. Wholesale customers receive discounts.
