Designation
| Name |
The value |
| Designation GOST Cyrillic |
ЭП539ЛМУ |
| Designation GOST Latin |
EP539LMU |
| Transliteration |
EhP539LMU |
| By chemical elements |
- |
Description
Alloy ЭП539ЛМУ used: for the production of cast bar billets (LPZ), intended for subsequent remelting and casting of gas turbine components.
Note
High-temperature Nickel-based alloy.
Standards
| Name |
Code |
Standards |
| Bars |
В55 |
TU 1-809-1025-98 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
N |
Al |
B |
Ti |
Mo |
Pb |
Bi |
Nb |
W |
Ce |
O |
Co |
Y |
| TU 1-809-1025-98 |
0.08-0.14 |
≤0.01 |
≤0.015 |
≤0.3 |
15.7-17.1 |
≤0.3 |
Rest |
≤1 |
≤0.008 |
3.2-4 |
0.015-0.02 |
2.2-3 |
1.5-2.4 |
≤0.001 |
≤0.0005 |
1.2-1.8 |
3.5-5 |
≤0.02 |
≤0.005 |
4-6 |
≤0.04 |
Ni is the basis.
According to TU 1-809-1025-98 chemical composition is given for the alloy grade EP539LMU-VI. The total content of Aluminum + Titanium = 5.50-6.40%.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
KCU, kJ/m2 |
| Cast rod stock (LPZ). Alloy ЭП539ЛМУ-VI. Heating to 1170-1190 °C, exposure 4 hours, air cooling or Heating to 840-860 °C, exposure 24 h, air cooling |
|
≥617 |
≥725 |
≥3 |
≥147 |
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 |
| KCU |
Toughness |
