Alloy KHN56VMKJU (ЭП109)

Designation

Name The value
Designation GOST Cyrillic ХН56ВМКЮ
Designation GOST Latin XH56BMKJu
Transliteration HN56VMKYu
By chemical elements CrNi56ВCuCoAl
Name The value
Designation GOST Cyrillic ЭП109
Designation GOST Latin EP109
Transliteration EhP109
By chemical elements -

Description

Alloy KHN56VMKJU used: for the manufacture of hot-rolled bars; turbine blades and other parts for aircraft and engineering.

Note

High-temperature Nickel-based alloy.
The recommended maximum operating temperature for limited time +950 °C.
The temperature of beginning of intensive scaling in air +1080 °C.

Standards

Name Code Standards
Bars and shapes В32 GOST 23705-79, TU 14-1-223-72, TU 14-1-402-72, TU 14-1-5.9-73, TU 14-11-245-88
Classification, nomenclature and General rules В30 GOST 5632-72
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Al B Ti Mo W Ce Co
TU 14-1-223-72 ≤0.1 ≤0.01 ≤0.015 ≤0.3 8.5-10.5 ≤0.6 Rest ≤1.5 ≤0.07 5.4-6.2 ≤0.02 - 6.5-8 6-7.5 ≤0.02 11-13
TU 14-1-402-72 ≤0.1 ≤0.011 ≤0.015 ≤0.3 8.5-10.5 ≤0.6 Rest ≤1.5 ≤0.07 5.4-6.2 ≤0.02 - 6.5-8 6-7.5 ≤0.02 11-13
GOST 5632-72 ≤0.1 ≤0.01 ≤0.015 ≤0.3 8.5-10.5 ≤0.6 Rest ≤1.5 ≤0.3 5.4-6.2 ≤0.02 ≤0.2 6.5-8 6-7.5 ≤0.02 11-13
Ni is the basis.
According to TU 14-1-223-72 in the alloy, the presence of antimony, tin, bismuth and arsenic is allowed for no more than 1 point of the spectral analysis scale. Boron and cerium are introduced into the metal by calculation and chemical analysis is not determined.

Mechanical properties

Section, mm σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
Bars hot rolled and forged and according to GOST 23705-79, THE 14-1-223-72. Annealing in air 1210-1230 °C (extract 4-6 h) + Aging 925-975 °C (exposure 8 h), air cooling
≥640 ≥4 ≥8 - -
1080-1280 9-15 11-16 196-490 302-363
540-590 3-8 5-12 392-588 -
640-780 4-16 8-20 392-588 -

Description mechanical marks

Name Description
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 l, W/(m · °C) a, 10-6 1/°C
20 210 8450 - -
500 188 - 159 134
600 183 - 184 136
700 176 - 209 141
800 169 - 234 148
100 - - 88 118
200 - - 105 122
300 - - 118 127
400 - - 138 131
900 - - 259 157
1000 - - - 170

A description of the physical symbols

Name Description
Е The normal elasticity modulus
l Coefficient of thermal conductivity
R UD. the resistivity