Extreme Entropy Alloys
EM-20001
The extreme entropy alloy EM-20001 is a disruptive innovative alloy with low cobalt content (Low-cobalt), low magnetism (Low-magnetic), with a high hardness greater than HV400, and at the same time has excellent properties such as high temperature resistance, high wear resistance and high corrosion resistance. Applied in oil well bearings, chemical industry and geothermal industry, the unique low-cobalt, low-magnetism patented formula can replace the expensive cobalt-based alloys such as Stellite 6, thus reducing the use of precious strategic material cobalt metal.
Material Features
Compared to cobalt-based alloys such as Stellite 6, which are resistant to high temperatures, wear and corrosion, the extreme entropy alloy EM-20001 has a patented formula with low cobalt content, which reduces the use of precious strategic material cobalt metal.
Extreme entropy alloy EM-20001 is a disruptive innovation alloy developed using the latest high entropy alloy concept. It has low magnetic properties. The data is shown in the following table:
| Sample material | Magnetic Permeability |
|---|---|
| EM-20001 | 1.0008 |
| Stellite 6 | < 1.2 |
Note: Magnetic permeability data is tested at 200 Oe.
The extreme entropy alloy EM-20001 has the characteristics of corrosion resistance. The data of the corrosion test is shown in the following table. It can be seen that the corrosion resistance of EM-20001 is much better than that of Stellite 6 cobalt-based alloy:
| Test conditions | EM-20001 | Stellite 6 |
|---|---|---|
| Acetic Acid (70 wt%, Boiling) | 0 | < 0.002 |
| Formic Acid (50 wt%, Boiling) | 0 | 1.19 |
| Hydrochloric Acid (20 wt%, RT) | 0.40 | 2.36 |
| Hydrochloric Acid (5 wt%, 66°C) | 1.6 | 25.4 |
| Sulfuric Acid (77 wt%, RT) | 0 | 0.02 |
| Sulfuric Acid (77 wt%, 66°C) | 0.027 | 4.5 |
| Sulfuric Acid (5 wt%, Boiling) | 0.309 | 2.31 |
Note: The corrosion test data is the corrosion rate in MPY (Mils Per Year). The larger the data value, the more serious the corrosion.
Extreme entropy alloy EM-20001 can be used in oil well bearings, chemical industry and geothermal industry, etc.
Geothermal industry