Physicochemical property of elements:
1.Physical property
Volume density | Bend Strength | Vichers-hadness | Porosity rate | Water absortion | Hot extensiblity |
5.5-5.6 kg/cm³ | 15-25kg/cm³ | (HV)570kg/cm³ | 7.4% | 1.2% | 4% |
2.Chemical porperty
The element cannot be used for rather long time in 400-700 ℃,otherwise ,it will be atomized owing to the strong oxdizing action in low temperature.
3.The max temperature of elements in different atmosphere
Air | 1700℃ | 1800℃ |
Nitrogen | 1600℃ | 1700℃ |
Argon/Helium | 1600℃ | 1700℃ |
Hydrogen | 1100-1450℃ | 1100-1450℃ |
N2/H2 95/5% | 1250-1600℃ | 1250-1600℃ |
Application Area | Most types of indurstial furnace for heat heatment , forgoing,sintering glass melting and refinin g and for use in radiant tubes. | Laboratory furnaces ,testing equipment and high temperature sintering production furnace. |