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Physical and chemical properties of elements
- Categories:Technical Support
- Author:
- Origin:
- Time of issue:2017-08-04 17:48
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(Summary description)
Physical and chemical properties of elements
(Summary description)
- Categories:Technical Support
- Author:
- Origin:
- Time of issue:2017-08-04 17:48
- Views:
1. Physical properties
Volume density |
Bend strength |
Vickers-hadness |
Porosity rate |
Water absortion |
Hot extnsiblity |
5.5~5.6kg/cm3 |
15-25kg/cm2 |
(HG)570kg/mm2 |
17.4% |
1.2% |
4% |
2. Chemical properties
Oxygen-resistance under high temperature: in the oxidizing atmosphere , a layer of compact quartz (SiO2) protective film is formed on the surface of element owing to the high-temperature combustion, which prevent MoSi2 from continuously oxidizing. When the element temperature is higher than 1700℃,the SiO2 protective film will be fused because its fusing point is1710℃ and the SiO2 is fused into molten dropa owing to the action of its surface extension, which cause losing its protective ability. In the oxidizing atmosphere, when the element is continuously used, the protective film forms again.
It should be pointed out that element cannot be used for rather long time in 400-700℃,otherwise it will be powdered owing to the strong oxidizing action in low temperature.
3.The Max temperature of elements in different atmospheres
Atmosphere |
Max element temperature |
|
Songshan Super MS17 |
Songshan Super MS18 |
|
Air |
1700℃ |
1800℃ |
Nitrogen |
1600℃ |
1700℃ |
Argon,Helium |
1600℃ |
1700℃ |
Hydrogen |
1100~1450℃ |
1100~1450℃ |
N2/H2 95/5% |
1250~1600℃ |
1250~1600℃ |
General applications |
Most types of industrial furnace for heat treatment ,forgoing, sintering, glass melting and refining and for use in radiant tubes |
Laboratory furnaces, testing equipment and high temperature sintering production furnace |
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