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Filit 21 is a cobalt-based electrode for surfacing against corrosion, oxidation, moderate abrasion, heavy cavitation and erosion at high temperatures. The weld metal has excellent thermal shock resistance and very high resistance against metal sliding abrasion. Usable for forging dies, high-temperature mixers, gas turbines and starting valves of combustion engines. The weld metal is work-hardenable.

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DIN EN 14700 E Co1
DIN 8555 E 20-UM-35 CTZ


Type of current AC
DC negative pole
Diameter 3.25 mm
4.0 mm
Weld Metal Composition C Mn Cr Mo Ni Co
  0.3 % 1 % 30 % 5.5 % 3.5 % Base

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