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Sic heating elements are made from quality green SiCpowder, which added to some additivies according to the materials proportion.Silicon carbide heating elements are non-metallic products. Compared withmetallic heating elements, they have a series of characteristics, such ashigher temperature, antioxidation, anticorrosion, increase temperature fast,low coefficient of thermal expansion and so on. Therefore, they are widely usedin electronic and magnetic material, ceramics, metallurgy industry and so on. Sic heating elements Specifications and Resistance Range
(d) Diameter
(L)Length of Hot Zone
(L1) Length of Cold Zone
(L) Overall Length
(d) Resistance
8
100-300
60-200
240-700
2.1-8.6
12
100-400
100-300
300-1100
0.8-5.8
14
100-500
150-350
400-1200
0.7-5.6
16
200-600
200-350
600-1300
0.7-4.4
18
200-800
200-400
600-1600
0.7-5.8
20
200-800
250-600
700-2000
0.6-6.0
25
200-1200
250-700
700-2600
0.4-5.0
30
300-2000
250-800
800-3600
0.4-4.0
35
400-2000
250-800
900-3600
0.5-3.6
40
500-2700
250-800
1000-4300
0.5-3.4
45
500-3000
250-750
1000-4500
0.3-3.0
50
600-2500
300-750
1200-4000
0.3-2.5
54
600-2500
300-250
1200-4000
0.3-3.0
The influence of operating temperature and surface load on the heater surface in a different atmosphere
Atmosphere
(℃) Furnace Temperature
（w/cm2） Surface Load
the influence on the heater
Ammonia
1290
3.8
the action on SiC produces and destroys the protection film of SiO2
Carbondioxide
1450
3.1
corrode SiC
Carbo Monoxide
1370
3.8
absorb carbon powder and influence the protection film of SiO2
Haloaen
704
3.8
corrode sic and destroys the protection film of SiO2
Hydrogen
1290
3.4
the action on SiC produces and destroys the protection film of SiO2
Nitrogen
1370
3.1
the action on SiC produces insulating layer of silicon nitride
