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COATING TYPE  - Rutile

AWS A 5.4:E 318 -16 ISO 3581-A-E 19 12 3 Nb R 1 2

Electrodes Monolith M-318 provide metal seam resistant to intercrystalline corrosion. Characterized by high welding-technological properties: stable arc burning, easy slag removal, good formation of seam with a smooth transition to the base metal.

PURPOSE AND FIELD OF APPLICATION

Rutile coated electrodes Monolith M-318 are designed for welding corrosion-resistant austenitic Cr-Ni-Mo steels stabilized with niobium of 08Х16Н13М2В, 03Х17Н14М2, 03Х17Н14М3, AISI 316Nb, AISI 316, AISI 318 types, etc., for parts working under temperature up to 400 C. Electrodes are used for welding of tanks, pipes and equipment for chemical, textile, paper industries, in environments where acidic, alkaline and saline solutions are found, as well as for structures that operate in seawater.

APPLICATION CONDITIONS

Electrodes are used for welding in all the spatial positions, except for the downward one. It is recommended to perform welding at maximum possible speed without transverse oscillations of electrode.

REDRYING BEFORE WELDING 

At normal storage conditions, the redrying is not required. In case of moisture, redrying is required at 350-370°С for 60 min.., 3 times max.

 

CHEMICAL COMPOSITION OF DEPOSITED METAL, %

Mn

Si

C

S

P

Nb+Ta

Mo

Cr

Cu

Ni

≤2.0

≤1.0

≤0.08

≤0.025

≤0.030

8*C 1.1

2.5-3.0

17-20

≤0.75

11-13

 

MECHANICAL PROPERTIES OF WELD METAL

Tensile strength, MPa

Elongation, %

Impact strength, KCV, +20°C

Yield strength, MPa

≥550

≥25

≥60

≥350

CONTENT OF FERRITE NUMBER IN DEPOSITED METAL

5-15 FN

Welding should be made at DC of reverse polarity, “+” on the electrode or at AC from the transformer with an open-circuit voltage of not less than 50 V.

PACKAGING DATA

Diameter, mm Length, mm Welding current, А Number of electrodes in package, pc. Weight of packing, kg
2.5 350 50-80 44-46 1
3 350 70-100 32-34 1
3.2 350 80-110 28-29 1
4 350 90-130 18-20 1

 

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