W-shape MoSi₂ Heating Element

Oxygen-resistance under high temperature: in oxidizing atmosphere, a layer of compact quartz protective film is formed on the surface of element owing to the high temperature combustion, which prevent Mosi2 from oxidizing more. When the element temperature is higher than 1700 °C, the film becomes melting. It’s not suitable for long time use in the temperature range of 400-700°C, otherwise, the element will be powdering for the strong oxidation under low temperature.

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Description

Oxygen-resistance under high temperature: in oxidizing atmosphere, a layer of compact quartz protective film is formed on the surface of element owing to the high temperature combustion, which prevent Mosi₂ from oxidizing more. When the element temperature is higher than 1700 °C, the film becomes melting. It’s not suitable for long time use in the temperature range of 400-700°C, otherwise, the element will be powdering for the strong oxidation under low temperature.

Material Grade: 1700, 1800

Diameter: D₁/D₂, mm/mm

Hot Zone Length: Le, mm

Cold Zone Length: Lu, mm

Shank Spacing: A, mm

Examples:

W-Shape, Material Grade 1800, D1=6mm, D2=12mm, Le=300mm, Lu=250mm, A=50mm

Specify as: Songyu SY18, W-Shape, 6/12 x 300 x 250x 50

MoSi₂ Heating Element Advantage

1 High purity

2 High temperature resistance

3 Energy-saving

4 Chemical stability

5 Long life

6 Easy maintenance

Physical Properties of MoSi₂ Heating Element

Physical properties
Volume Density	Bend Strength	Porosity Rate	Water Absorption	Hot Extensiblity
5.5-5.6g/cm³	15-25kg/ cm²	7.4%	1.2%	4%

Indicators in Different Atmospheres

Atmosphere	SP1700	SP1800
Air	1700	1800
N2 Nitrogen	1600	1700
Ar Ne Argon, Helium	1600	1700
Dry Hydrogen (dew point)-80℃	1150	1150
Wet Hydrogen (dew point)-20℃	1450	1450
Exogas (e.g. 10% CO2, 50% CO, 15%H2)	1600	1700
Exogas (e.g. 40% CO2, 20% CO)	1400	1450
Cracked and partially burnt ammonia	1400	1450

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