Alloy KHN62MVKJU (ЭИ867)

Designation

Name The value
Designation GOST Cyrillic ХН62МВКЮ
Designation GOST Latin XH62MBKJu
Transliteration HN62MVKYu
By chemical elements CrNi62CuВCoAl
Name The value
Designation GOST Cyrillic ЭИ867
Designation GOST Latin EI867
Transliteration EhI867
By chemical elements -

Description

Alloy KHN62MVKJU used: for the manufacture of blades and turbine disks.

Note

High-temperature Nickel-based alloy.
The recommended maximum operating temperature for a long very long time +800 °C.
The temperature of beginning of intensive scaling in air +1080 °C.

Standards

Name Code Standards
Bars and shapes В32 GOST 23705-79, TU 14-1-3583-83, TU 14-11-245-88
Classification, nomenclature and General rules В30 GOST 5632-72
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90
Thermal and thermochemical treatment of metals В04 ST ЦКБА 016-2005
Processing of metals by pressure. Forgings В03 TU 14-1-2406-78

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Al B Ti Mo W Ce Co
GOST 5632-72 ≤0.1 ≤0.011 ≤0.015 ≤0.3 8.5-10.5 ≤0.6 Rest 4 ≤0.3 4.2-4.9 ≤0.02 ≤0.2 9-11.5 4.3-6 ≤0.02 4-6
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 at ST CKBA 016-2005. Annealing in air 1210-1230 °C (extract 4-6 h) + Aging at 940-960 °C (exposure 8 h), air cooling
≤60 ≥735 ≥1178 ≥12 ≥15 ≥294 260-360
Bars hot rolled and forged and according to GOST 23705-79. Annealing in air 1210-1230 °C (extract 4-6 h) + Aging at 935-965 °C (exposure 8 h), air cooling
760-860 980-1220 8-24 11-28 147-490 285-352
390-490 570-735 8-20 12-28 490-686 -
290-340 390-490 10-20 18-25 588-784 -

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