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Element Sheath Materials

Element Sheath Material Warren Electric Corporation manufactures heaters with various options including element sheath material. When selecting a element sheath material consideration should be given to compatibility with the heated medium. Standard element sheaths available are steel, stainless steel, copper and incoloy.  

Steel Element Sheath

  Steel Elementh Sheath 12, 18, & 24 watts per square inch (WSI)
(Other watt densities available)

Typically used for heating residual fuel oil, hydraulic, lubricating, and other oils. Other uses include heating high temperature heat transfer fluids and some solvents  


Copper Element Sheath

  Copper Element Sheath 55 watts per square inch (WSI)
(Other watt densities available)

For use in hot water storage tanks, booster heating, freeze protection, and heating applications using aqueous solutions that are not corrosive to copper. UL listed heaters available for aqueous solutions.  


Stainless Steel Element Sheath

  20 & 50 watts per square inch (WSI)
(Other watt densities available)

Type 321 most common. 316L and others also available. Typical applications include heating process water, deionized or demineralized water (passivation available), most corrosive oils, and mild corrosive liquids (cleaning solutions, etc.)  


Incoloy Steel Element Sheath

  5 to 75 watts per square inch (WSI)
(Other watt densities available)

Type 840 most common. 800 also available. Typical applications include heating process water, demineralized or deionized water (passivation available), air, and steam.  


Inconel Element Sheath

  Uncommon, expensive, but available.