Designation
| Name |
The value |
| Designation GOST Cyrillic |
ХН75ТБЮ |
| Designation GOST Latin |
XH75TBJu |
| Transliteration |
HN75TBYu |
| By chemical elements |
CrNi75TeBeAl |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ869 |
| Designation GOST Latin |
EI869 |
| Transliteration |
EhI869 |
| By chemical elements |
- |
Description
Alloy ХН75ТБЮ used: for the manufacture of disks, rotors, fasteners, flat springs and other parts operating at temperatures up to +650 °C; welded parts and assemblies of pipeline valves.
Note
High-temperature Nickel-based alloy.
Standards
| Name |
Code |
Standards |
| Thermal and thermochemical treatment of metals |
В04 |
ST ЦКБА 016-2005 |
| Bars and shapes |
В32 |
TU 14-1-272-72 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Al |
B |
Ti |
Nb |
Zr |
| TU 14-1-272-72 |
≤0.08 |
≤0.02 |
≤0.02 |
≤1 |
14-17 |
0.8 |
Rest |
≤3 |
1.1-1.4 |
≤0.005 |
1.5-1.9 |
1-1.5 |
≤0.003 |
Ni is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Blank pieces of pipe fittings and welded assemblies operating at tраб≤750 °C at ST CKBA 016-2005. Quenching in water with 1090-1110 °C (exposure for 6 h) and Aging at 1000 °C (exposure 2 hours), cooled with the furnace to 900 °C (aging for 1 h), cooling with the furnace to 800 °C (exposure 2 hours), air cooling to 750 °C (20 h exposure), air cooling |
| ≤200 |
≥539 |
≥931 |
≥24 |
≥28 |
≥980 |
255-302 |
| Bars and shapes. Austenization heating to 1090-1110 °C (exposure 6 h), cooling in water + Aging 1090-1110 °C (exposure 2 hours), cooled with the furnace to 900 °C |
| 25 |
≥540 |
≥930 |
≥24 |
≥28 |
≥980 |
- |
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 |
| y |
The relative narrowing |
| KCU |
Toughness |
| HB |
Brinell hardness number |
Physical characteristics
| Temperature |
Е, HPa |
r, kg/m3 |
| 20 |
203 |
7950 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
