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Welding electrodes Monolith M-20/25

AWS A5.4: E308L-16
EN ISO 3581-A-Е Z 20 25 5 Cu N L В 2 2
Terms of use
  • applied when welding in all spatial positions, except from top to bottom, with a constant current of reverse polarity
  • welding must be performed with a short arc, without transverse oscillations, the edges should be cleaned before welding
Special properties
  • very high reserve of austenity (EA-3)
  • excellent mechanical properties of the deposited metal
  • high welding and technological properties, easy separation of the slag crust, and the formation of a seam with a smooth transition to the base metal
  • surfacing coefficient: 0.19...0.20 g/A•min
  • consumption of electrodes per 1 kg of deposited metal: 1.4...1.5 kg
Monolith M-20/25 electrodes are designed for responsible welding structures made of alloyed steels of increased and high strength, heat-resistant and low-magnetic steels, steels of the type AK 23, AK 25, AK 27, as well as welding dissimilar steels.
Package Weight
First select diameter
Package Weight
First select diameter
Coating type
basic
CHEMICAL COMPOSITION OF DEPOSITED METAL, %
According to AWS A5.1 / Typical Results
C
Carbon
0.1
Mn
Manganese
1.6
Si
Silicon
0.5
Cr
Chromium
16
Ni
Nickel
25
Mo
Molybdenum
6
WEDGE METAL MECHANICAL PROPERTIES
According to AWS A5.1 / Typical Results
  • Tensile strength, MPa ≥ 510
  • Yield point, MPa ≥ 320
  • Relative elongation, % ≥ 25
Baking before welding
  • permissible moisture content in the coating before use is not more than 0.3%
  • in case of electrode coating wetting above the norm - dry for 60 minutes at 250±10 °С
Welding modes
Welding current strength, A for electrodes with a diameter of, mm
3.04.0
80 – 110120 – 150

Welding should be carried out with direct current of reverse polarity, “+” on an electrode with an arc voltage of 20 - 25 V

Position of seams during welding
pa
pb
pc
pf
pe
pd
Package Weight
First select diameter
Package Weight
First select diameter
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