KOBATEK 544 HARD-FILLER ELECTRODE 4.00 mm × 350, 5 kg package

Kobatek 544 is an iron-based, cobalt-alloyed hardfacing electrode that allows for the production of weld deposits with the desired hardness in a single pass. The filler metal provides high resistance to wear and metal-to-metal friction—often accompanied by oxidation—that occurs on tool steels operating at particularly high temperatures. In addition, it offers high resistance to galling and seizing. Thanks to the high thermal conductivity of the weld metal, there is no reduction in hardness at temperatures up to 650°C.
It is ideal for welding applications on high-strength carbon steels and hot-work steels. In thick filler welds performed with Kobatek 544, compared to other iron-based filler materials that provide similar hardness values,
fewer cracking issues occur. Its weldability is excellent, enabling stable arc operation. Thanks to its high metal deposition rate (135%), it positively contributes to reducing
welding time and labor costs. A buffer layer is generally not required. However,
depending on the type and thickness of the base metal, a preheating temperature of 150–400°C is recommended. The filler metal can only be processed with tools featuring a tungsten-carbidetip. It is recommended to hold the electrode at a 45° angle to the weld pool and to work with a short arc

Hardness: 46–50 HRC (post-weld)
54–57 HRC (after service and impact)

Annealing Temperature: 760–800°C
Hardening Temperature: 1050–1100°C
Tempering Temperature: 400°C (air cooling)

– Pressing and hot deburring dies
– Hot extrusion pistons used in the plastics manufacturing industry
– Mandrels
– Rolls used in steel mills
– Furnace components
– Parts used in the foundry industry- Forging rolls
– Continuous feed rollers
– Pump shafts
– Wire drawing dies
– Hot forging and forming dies
– Cutting tools