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Physical and chemical properties of elements

Number of visits: Date:8/2/2017 04:33:20

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

7.4%

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 

TypeInfo: Technical Support

Keywords for the information:Molybdenum disilicide heating elements  MoSi2 heater  Silicon carbide heating elements  SiC heater