Silicon Carbide Heating Elements – Maltec-H Type SGR


  • Withstands as high as 1600 (surface temperature)
  • Generates high heat output per unit surface area, approximately 5-10 times the output of Nichrome wire.
  • High strength and excellent shock resistance.
  • Chemically very stable.
  • Heat source is free of noise and air pollution.
  • Various coating products are available for protection against water vapor and harmful gas atmosphere.
  • Easy to handle.

This type also has a spiral groove engraved on the heating zones similar to type SG. This has the cold end only at one end, which is its distinguishing feature. As the connecting terminals are at the one side, it is very convenient to use and moreover an energy saving furnace can be built by using this. Use of the types SG and SGR is recommended for the applications where service conditions are severer or where the temperature in the furnace chamber exceeds 1400°C.


Characteristics Items Unit Type
E · E-DV · F SG · SGR Super SA
Apparent Density 3.2 3.1 3.2
Bulk Density 2.5 2.8 2.9
Apparent Porosity % 23 5 10
Bending Strength Mpa at 25°C 50 98 100
Specific Heat KJ/KG · °C at 25°C ~ 1300°C 1.0 1.0 1
Heat Conductiviity W/m · °C at 1000°C 14 ~ 19 16 ~ 21 16 ~ 21
Specific Resistance Ω cm at 1000°C 0.08 (E) |0.10 (E-DV-F) 0.016 0.045
Coefficient of Thermal Expansion 1000°C (x10⁻⁶/°C 4.5 4.5 4.5
Max operating temperature in the furnace chamber °C 1400 1600 1600


Maltec-H Type SGR – Silicon Carbide Heating Elements_DpstarGroup


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