They are also fully resistant to an extreme temperatures, specifically to certain chemicals otherwise not sustainable with the general alloys of heating elements. The superalloys are mostly nickel-based and excellent corrosion-free materials typically suitable for environments under particularly high pressure and kinetic energy.
Wattco™ heater elementsįor extreme environments, WATTCO™ manufactures heater elements made with super alloys such as Inconel® or Incoloy®. An added benefit of titanium is the nature of its feather weight as compared to other metals. The use of titanium relieves much concern for corrosion as one of its properties is strong corrosion resistance. However, it ultimately reacts to the atmospheric oxygen over prolonged use and forms a layer of copper oxide instead of iron oxide.
Copper, for example, does not react to water, so it could avoid normal oxidization. The use of exotic alloys further enhances the ability of the heating elements to withstand their inherent erosive nature. Certain external environments, such as low oxygen, high salinity or poor circulation under which stainless steel becomes vulnerable to a passive film of chromium oxides. However, stainless steel is not full-proof to erosion by no means. (Source: Wikipedia) The biggest advantage of stainless steel compared to regular carbon steel is the resistance to oxidization. Stainless steel is made of steel alloy with at least 10.5%, more likely 13% to 26%, chromium content by mass. Considering these conditions, stainless steel is ideal for heating water and other similar chemicals. Immersion heaters often require materials that are highly resistant to breakdown at extreme temperatures and to stay immersed without giving in to an erosion factor. The materials used in heater elements vary depending on their application.
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