KOBATEK 352 Steel Electrode 3.20 mm × 350, 5 kg package

The coating has a basic character and is used specifically for welding martensitic and martensitic-ferritic Cr-Ni
steel castings.
It provides a filler metal with high resistance to corrosion and erosion caused by water, steam, and seawater.
When welding thick-section parts, the base metal must be preheated to temperatures between 150–300°C, and the interpass temperature must be maintained at a constant level throughout the welding process.
When welding martensitic stainless steels containing more than 0.2% carbon,
softening and stress-relief annealing should be performed at temperatures between 550–600°C.
This results in weld beads with easily removable slag and a smooth appearance.

Tensile Strength: 90–110 kg/mm²
Yield Strength: 70–80 kg/mm²
Elongation (L=5d): 10–15%
Hardness: 38–40 HRC
Impact Strength: 24 J (+20 °C)

– Water turbines and compressors
– Pelton and Francis turbine rotors
– Kaplan turbine blades
– Pumps
– Gas, steam, and water valves with operating temperatures up to 450°C
– Erosive and corrosive environments caused by seawater
– Materials containing 12–15% Cr and 4% Ni;
X4 CrNi 13 4 (1.4313), G-X5 CrNi 13 4 (1.4407),
G-X4 CrNiMo 13 4 (1.4413), G-X5 CrNiMo 13 4 (1.4414)
Welding of these materials against corrosion