Download PDF of this page Print this page

Metallic Heating Elements

  • Open Coil Wire Elements
  • Open Coil Heating Element
Click to enlarge
Advantages:
  • Available in wire and strip form, so they can be formed and fabricated by conventional metal-forming techniques into a variety of shapes and sizes
  • Heating systems employing them can be designed to operate on line voltage, while systems using SiC and MoSi2 elements generally require transformers
  • Typically less expensive than SiC and MoSi2 elements for the same power output

Disadvantages:

  • Relatively low MET
  • Not self-supporting
  • Resistance increases with time due to reduction in cross-section by oxidation and elongation (creep), resulting in decreased power output and eventual failure