Low Alloy Steel
Maruthi 7018 A1
Identification: Name Printed on coating
Characteristics
An all positional, medium heavy coated, iron powder type, low alloy, low hydrogen electrode depositing radiographic quality welds, which are highly resistant to hydrogen induced cracking. Weld beads are smooth and spatter level is low, Works well on AC & DC.
Applications
These Low Alloy Carbon Steels electrodes are used for welding C-1/2 Mo low alloy steels, high tensile steels, used in high temperature applications. It finds application in the fabrication of high pressure boilers, turbine equipments, high pressure piping, pressure vessels, heavy welded fabrication and oil refining equipments, etc. It is recommended to dry the electrodes at 250 degree C for 1-2 hours. Maintain short arc preheating (150-200 degree C) is recommended on thicker section.
Classification: ASME SFA505, E 7018 A1
Current range (AC/DC+) : Size (mm) Amperage
2.5 60-90
3.15 90-130
4.0 130-170
5.0 170-230
Composition (%) of weld metal: C: 0.05-0.10, Mn: 0.5-0.90, Si: 0.4-0.80, P: 0.03 Max, S: 0.03 Max, Mo: 0.40-0-0.65
Mechanical Properties of All Weld Metal: UTS N/mm square 540-660
YS N/mm square 460-580
%E (4d) 25-29
Other products in the range include Maruthi 8018B2, Maruthi 9018 B3, Maruthi 9018M, Maruthi 11018M, Maruthi 8018 W, etc.
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