X20H30YUS
Nichrome Cr20H30YUS (GS-40)
This grade is one of the most popular in the production of heating elements. According to the designation regulated by GOST, the chemical composition of the alloy includes chromium, nickel, aluminum, carbon. In addition, the alloy is alloyed with the following elements: manganese, silicon, titanium. The basis is iron.
| ALLOY |
Ni30Cr20 |
|---|
| Material |
1.4725 |
| Designation |
Cr15Al5 |
| DIN |
17 470 |
| UNS designation |
K 92 500 |
| ASTM |
B 603-1 |
| AMS |
--- |
| CHEMICAL COMPOSITION, (%) |
| Chrome, (Cr) |
19.0- 21.5 |
| Aluminum, (Al) |
≤ 0.3 |
| Carbon, (C) |
≤ 0.06 |
| Nickel, (Ni) |
30.0 - 31.5 |
| Manganese, (Mn) |
≤ 1.0 |
| Silicon, (Si) |
1.80 - 3.00 |
| Copper, (Cu) |
--- |
| Titanium, (Ti) |
Max 0.6 |
| Iron, (Fe) |
Base |
| The rest |
Zr, (Fe) Max 0.3 |
| MECHANICAL PROPERTIES AT ROOM TEMPERATURE |
| Number of bends, (times) |
> 7 |
| Relative elongation, % |
> 20 |
| PHYSICAL PROPERTIES AT ROOM TEMPERATURE |
| Density, gr/cm³ |
8,3 |
| Hardness, HB |
200-260 |
| Tensile strength, MPa |
637-784 |
| Specific electrical resistance, Ohm*mm2/m |
1.12 |
| Maximum operating temperature, deg (ºС) |
1100 |
| Melting temperature, deg (ºС) |
1390 |
| Magnetic qualities |
Low magnetic material |
| SERVICE LIFE |
| Ø 6.0 mm and more |
tº =1100°C |
> 3500 hours |
| Ø 3.0-6.0mm |
t º =1500 ºC |
>1800 hours |
| Ø 1.5-3.0 mm |
t º =1500 ºC |
> 1800 hours |
| Ø 0.4-1.5mm |
t º =1050 ºC |
> 900 hours |
| MATERIAL DESCRIPTION: |
| - High corrosion resistance in air, oxidizing environments, vacuum; |
| MAIN APPLICATIONS: Firing and drying furnaces, high-temperature furnaces, resistance elements, heaters, industrial heating elements. |
