Relevance
Heat-resistant nickel-based alloy KhN80TBY (EI607) is ideal for the production of turbines which are operated at 700° C for a long time. In modern engines the material for turbine blades must have high resistance to breakage under low-cycle and thermal fatigue, which is the main cause of breakage today. The danger of fracture can be exacerbated by surface reactions that are associated with grain boundary loosening and gas corrosion. The requirements to the material for turbine blades are caused by the latest developments of the engine design, they are connected with increase in plasticity, heat resistance, resistance to dynamic loads and thermal fatigue, as well as resistance to gaseous media.
Percentage composition (GOST 5632−72).
| Si |
C |
Fe |
Mn |
P |
S |
Ni |
Cr |
Al |
Ti |
Nb |
|---|
| up to 0.8 |
up to 0.08 |
up to 3 |
up to 1 |
up to 0.015 |
to 0.012 |
72.293 — 81.7 |
15 — 18 |
0.5 — 1 |
1.8 — 2.3 |
1 — 1.5 |
Technological characteristics of the alloy CrNi80Tbyu
| Designation |
Description |
|---|
| Difficult-to-weld |
— To strengthen the welds requires preheating to 200−300 ° C and the final thermal annealing. |
The mechanical characteristics of the alloy grade KhN80TBYu at 20 ° C.
| Rolled products |
E.g. |
Size |
d5 |
y |
s in |
sT |
Heat treatment. |
KCU |
|---|
| - |
- |
mm |
% |
% |
MPa |
MPa |
- |
kJ/m2 |
| Bar |
Prod. |
|
18 |
22 |
950 |
650 |
700 |
|
Mechanical properties:
| Description |
Designation |
|---|
| — Proportional limit (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 |
The main qualities of CrN80TBU grade
| 1/Grad |
MPa |
Grad |
W/(m-grad) |
Ohm-m |
J/(kg-grad) |
kg/m3 |
|---|
| 16.35 |
1.68 |
800 |
28.9 |
|
|
|
| 15.6 |
1.78 |
700 |
26.3 |
1240 |
|
|
| 14.9 |
1.88 |
600 |
26.3 |
1230 |
|
|
| 14.4 |
1.97 |
500 |
24.3 |
1220 |
|
|
| 14 |
2.04 |
400 |
20.1 |
1200 |
|
|
| 13.1 |
2.1 |
300 |
17.9 |
1190 |
|
|
| |
2.15 |
200 |
15.5 |
1180 |
|
|
| |
2.21 |
100 |
13.4 |
1170 |
|
|
| |
2.24 |
20 |
|
|
|
8300 |
physical properties
| Description |
Designation |
|---|
| — Alloy data acquisition temperature [degrees] |
— 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 |
Magnetic properties
| Description |
Designation |
|---|
| — Coercive force (within) [ A/m] |
Hc |
| — Magnetic permeability (not more than) [ MHN/m] |
Umax |
| — Losses (not more than) at frequency 50 Hz and 1.0 Tl [ W/kg ] |
P1.0/50 |
| — Magnetic induction Tl (not less) at magnetic field strength 100, in magnetic fields [ A/m] |
B100 |
| — Coercive force (not more), [ A/m] |
Hc |
| — Magnetic permeability (not more than), [ MHN/m] |
Umax |
| — Specific loss (max) at frequency 50 Hz and 1.0 Tesla [ W/kg ] |
|
Foreign analogues of KhN80TBU alloy grade.
| Japan |
USA |
|---|
| JIS |
- |
| NCF750 |
UNS07750 |
Supplied
All the presented products are certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; mechanical properties of the products. From us you can buy in bulk any semi-finished products for large-scale productions. We also offer optimum conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.
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Evek GmbH sells rolled metal products at the best price. It is determined by the technological features of production without the inclusion of additional costs. With us it is easy to buy in bulk all the necessary products for large-scale production. We also offer favorable conditions for retail customers. You will be satisfied with the level of service and high quality products. On our site. you will find all the necessary information about the goods, be able to download the catalog of products, view the price list. We are waiting for your orders.
