E⋅109
MPa
α⋅106
K−1
ϰ
Wm⋅K
ρ
kgm3
σU
MPa
ϵL

HN70YU (EI652)

Heating elements of resistance. Details of the combustion chambers and afterburner chambers — pockets, diffusers, screens, etc. with minor voltages and t up to 1200 degrees. 7900kg / m3.

various parts operating at moderate voltages, at 1100−1200 ° C (can be applied to the heating resistance element).

Classification

Country Section Category
CIS, Russia, Ukraine Heat resistant steels and alloys Heat resistant alloys

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % Ni, % Ba, % Al, % Ce, % P, % C, % S, %
GOST 5632-72 < 1 < 0.8 < 0.3 26–29 < 0.07 65.073–71.2 < 0.1 2.8–3.5 < 0.03 < 0.015 < 0.1 < 0.012

Information on suppliers

Physical characteristics

Temperature, °C E\cdot 10^{9}E⋅109, MPaMPa \alpha\cdot 10^{6}α⋅106, K^{-1}K−1 \varkappaϰ, \frac{W}{m\cdot K}Wm⋅K \rhoρ, \frac{kg}{m^3}kgm3
20 191 11.7 7900
100 182 13.14 12.6
200 173 13.86 13.9
300 166 14.76 13.55
400 156 15.68 17.25
500 147 16.39 18.9
600 137 17.81 18.9
700 118 22.42 23.1
800 25.47 24.8
900 21.34 26.9
1000 21.21

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}σU, MPaMPa \epsilon_LϵL, % Treatment
Sheet GOST 24982-81 < 3.9 980 30 Hardening of 1100-1150 ° C, cooling water

Technological Properties

Weldability
Boundedly welded

Analogues

Germany
2.4872

Standards

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Cu % Copper
Ni % Nickel
Ba % Barium
Al % Aluminium
Ce % Cerium
P % Phosphorus
C % Carbon
S % Sulfur

Description of physical characteristics

Parameter Units of measurement Description
E\cdot 10^{9}E⋅109 MPaMPa Elastic modulus
\alpha\cdot 10^{6}α⋅106 K^{-1}K−1 Coefficient of thermal (linear) expansion (range 20°C–T)
\varkappaϰ \frac{W}{m\cdot K}Wm⋅K Coefficient of thermal conductivity (the heat capacity of the material)
\rhoρ \frac{kg}{m^3}kgm3 The density of the material

Description of mechanical properties

Parameter Units of measurement Description
\sigma _{U}σU MPaMPa Ultimate tensile strength
\epsilon_LϵL % Elongation at break (longitudinal)

Designation of types of weldability

Parameter Units of measurement Description
no limits Welding is performed without heating and without subsequent heat treatment
Boundedly welded Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures