Alloy ХН55МБЮ (ХН63М9Б2Ю; ЭП666)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХН55МБЮ |
| Designation GOST Latin |
XH55MBJu |
| Transliteration |
HN55MBYu |
| The chemical elements |
CrNi55CuBeAl |
| Name |
The value |
| Designation GOST Cyrillic |
ХН63М9Б2Ю |
| Designation GOST Latin |
XH63M9B2Ju |
| Transliteration |
HN63M9B2Yu |
| The chemical elements |
CrNi63Cu9Be2Al |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП666 |
| Designation GOST Latin |
EP666 |
| Transliteration |
EhP666 |
| The chemical elements |
- |
Description
Alloy ХН55МБЮ used: for the production of semi-finished products (forgings, rods, hot rolled sheets, pipes), intended for the manufacture of parts of gas turbine engines and plants; equipment engineering; pipeline fittings AC.
Note
High-temperature Nickel-based alloy.
The recommended maximum operating temperature for limited time +900 °C.
The temperature of beginning of intensive scaling in air +1100 °C.
Standards
| Name |
Code |
Standards |
| Thermal and thermochemical treatment of metals |
В04 |
ST ЦКБА 016-2005 |
| Bulls. Blanks. Slabs |
В31 |
TU 14-1-1214-75, TU 14-1-3626-83 |
| Sectional and shaped rolling |
В32 |
TU 14-1-2606-79 |
| Sheets and stripes |
В53 |
TU 14-1-3191-81 |
| Metal forming. Forgings |
В03 |
TU 14-1-3628-83 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
N |
Al |
Mo |
Nb |
Ce |
| TU 14-1-3626-83 |
≤0.6 |
≤0.015 |
≤0.015 |
≤0.8 |
16.5-18.5 |
≤0.5 |
The rest |
10.5-15 |
≤0.03 |
1.2-1.8 |
8.5-10 |
1.5-2.5 |
0.01-0.02 |
| TU 14-1-2606-79 |
≤0.6 |
≤0.02 |
≤0.02 |
≤0.8 |
16.5-18.5 |
≤0.5 |
The rest |
10.5-15 |
≤0.03 |
1.2-1.8 |
8.5-10 |
1.5-2.5 |
- |
Ni is the basis.
According to TU 14-1-2606-79, the chemical composition is given for the alloy of the grade KhN55MBY-VD (EP666-VD).
According to TU 14-1-3626-83, the chemical composition is given for the alloy grade KhN55MBY-VD (EP666-VD). Cerium is introduced into the metal by calculation and chemical analysis is not determined. The nitrogen content is determined in the finished metal. In the finished metal, the deviation from the chemical composition according to the carbon content is +0.010%, iron -1.0%. In the finished metal, a residual titanium content of not more than 0.20% is allowed. The deviation in titanium is +0.10%. In the finished rolled products, the presence of tungsten content not exceeding 0.20% and copper not exceeding 0.070%
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
| The bars as supplied on the other 14-1-2606-79 (longitudinal samples) |
| 3.4-3.7 |
≥600 |
≥1050 |
≥20 |
≥30 |
245-490 |
| 3.4-3.7 |
≥450 |
≥500 |
≥25 |
≥30 |
- |
| Tubular billet on the other 14-1-3626-83. Annealing in air of 980±20 °C (exposure for 1 h) and Aging at 730±20 °With (extract 15 h) cooling with the furnace to 650±20 °C (exposure for 10 h), air cooling (longitudinal samples) |
| 20-25 |
≥590 |
≥1030 |
≥20 |
- |
- |
| 20-25 |
≥441 |
≥590 |
≥25 |
- |
- |
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 |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
Technological properties
| Name |
The value |
| Macrostructure and contamination |
The macrostructure of billets on the other 14-1-3626-83 should not have shrinkage and looseness, bubbles, cracks, inclusions and delaminations are visible to the naked eye. Under the control of the workpiece on the transverse templet allowed: Central porosity - less than 1 point, point heterogeneity - no more than 2 points; - phase separation in the square - not more than 1 score. Contamination of metal non-metallic inclusions shall not exceed the maximum score: - oxides of point - 1.5 points; - oxides of stroke - 1.0 points; - silicates fragile - 1.0 points; - silicates plastic - 1.0 points; - silicates nodetoreplace - 1.0 points; - sulphides - 1.0 points. Nitrides and carbonitride monitored and actual results are recorded in the certificate of quality. |
