Alloy Kh20H80-H
Alloy Kh20H80-N
Alloy Kh20H80-N: a classifier of steels and alloys. Below is systematized information on the purpose, chemical composition, types of supply, substitutes, critical point temperature, physical, mechanical, technological and foundry properties for the grade — Alloy X20H80-N.
General data on Cr20Ni80-H alloy
Delivery type |
Nichrome Cr20N80, wire Cr20N80, band Cr20N80, bars, including shaped: GOST 12766.4−77. Calibrated rod GOST 12766.3−77. Tape GOST 12766.277, GOST 12766.577. Wire 12766.1−77. |
Application |
For electric heating elements of furnaces with the limiting working temperature 1100−1200°C and household devices. |
Chemical composition of the alloy Kh20H80-H
Chemical element |
% |
Aluminum (Al), not more |
0.2 |
Iron (Fe), not more than |
1.0 |
Silicon (Si) |
1.0−1.5 |
Manganese (Mn), not more than |
0.6 |
Sulfur (S), not more than |
0.015 |
Titanium (Ti), not more than |
0.2 |
Carbon ©, not more than |
0.06 |
Phosphorus (P), not more than |
0.02 |
Chromium (Cr) |
20.0−23.0 |
Zirconium (Zr), not more than |
0.5 |
Mechanical properties of the alloy X20H80-H
Mechanical properties depending on test temperature
t test temperature,°C |
σB, MPa |
δ5, % |
ψ, % |
Wire of 0.1−7.5 mm cross-section. Heating at 1200 °C, 20 min, air. |
20 |
656 |
45 |
61 |
700 |
431 |
40 |
40 |
800 |
215 |
70 |
72 |
900 |
92 |
55 |
82 |
1000 |
71 |
70 |
62 |
1100 |
35 |
130 |
93 |
1150 |
27 |
110 |
96 |
1200 |
22 |
102 |
98 |
Technological properties of the alloy X20H80-H
Weldability |
RDS. Do not use gas welding. |
Physical properties of the alloy Х20Н80-Н
Test temperature,°C |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
Steel density, pn, kg/m3 |
8400 |
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Heat transfer coefficient W/(m -°C) |
|
14 |
16 |
17 |
19 |
|
23 |
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Electrical resistivity (p, nominal value — m) |
1175 |
1180 |
1190 |
1200 |
1215 |
1220 |
1200 |
1195 |
1195 |
1200 |