Develop a flux cored wire for submerged arc welding of Ni-Mo low alloy steel


Ni-Mo low alloy steel exhibits an admirable amalgamation of high strength and toughness at subzero temperature and show resistance to brittle fracture with good weldability. This steel has been established to fulfill the needs of specific applications, such as the construction of ships and submarines. To develop a companionable wire for welding of Ni-Mo low alloy steel, the amount of the alloying elements in a wire is increased to toughen of weld metal, the wire itself has high strength so that the wire is hardened at the wire drawing, making the wire production difficult. In order to avoid the problems related to the solid wires, various flux cored wires have been developed. In this work, the effect of flux basicity index and heat input on chemical composition, oxygen-nitrogen analysis, mechanical properties and microstructure of Ni-Mo low alloy steel welded by SAW welding using flux cored wires are presented along with the effect of flux cored wire and basicity index on deposition rate.

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yield strength


ultimate tensile strength

% EL:

percentage elongation


impact toughness value at −500 C


Vicker hardness number


basicity Index,


heat input


  1. 1

    ASME 2019 BPVC Section II-Materials Part C-Specifications for Welding Rods Electrodes and Filler Metals

  2. 2

    Bang K, Park C, Jung H and Lee J 2009 Effects of flux composition on the element transfer and mechanical properties of weld metal in submerged arc welding. Met. Mater. Int. 15(3): 471–477

    Article  Google Scholar 

  3. 3

    Mallik S, Minz B S and Mishra B 2012 Production of DMR 249A Steel at SAIL, Bokaro Steel Plant. Materials Science Forum 710: 149–154

    Article  Google Scholar 

  4. 4

    Yakovlev D S and Shakhmatov M V 2016 Using flux-cored wires in multi-arc welding. Weld. Int., 30(11): 858–863

    Article  Google Scholar 

  5. 5

    Pandey N D, Bharti A and Gupta S R 1994 Effect of submerged arc welding parameters and fluxes on element transfer behaviour and weld-metal chemistry. Journal of Materials Processing Technology 40: 195–231

    Article  Google Scholar 

  6. 6

    Kanjilal P, Pal T K and Majumdar S K 2006 Combined effect of flux and welding parameters on chemical composition and mechanical properties of submerged arc weld metal. J. Mater. Process. Technol: 40: 223–231

    Article  Google Scholar 

  7. 7

    Paniagua-Mercado A M, Lopez-Hirata V M and Munoz M L S 2005 Influence of the chemical composition of flux on the microstructure and tensile properties of submerged-arc welds. J. Mater. Process. Technol: 169: 236–251

    Article  Google Scholar 

  8. 8

    Fu K, Hu F, Wang J, Liu F, Ji Y and Jiang J 2017 Effects of the Performance of Ship Steel for High Heat Input Welding by Micro-Alloy Element. Chinese society for metals, hsla steels 2015, microalloying 2015 & offshore engineering steels, vo. 1, pp. 447–452

  9. 9

    Show B K, Veerababu R, Balamuralikrishnan R and Malakondaiah G 2010 Effect of vanadium and titanium modification on the microstructure and mechanical properties of a microalloyed HSLA steel.Mater. Sci. Eng. A, 527(6): 1595–1604

    Article  Google Scholar 

  10. 10

    ASM international 1996 Welding, Brazing and Soldering, Metals handbook Volume 6

  11. 11

    Singh B 2013 Review on effect of flux composition on its behavior and bead geometry in submerged arc welding (SAW). J. Mech. Eng. Res., 5(7): 123–127

    Article  Google Scholar 

  12. 12

    Sharma L, Kumar J and Chhibber R 2019 Experimental investigation on surface behaviour of submerged arc welding fluxes using basic flux system Ceram. Int., pp 1-11

  13. 13

    Sharma L, Kumar J and Chhibber R 2019 Experimental investigation on high temperature wettability and structural behaviour of SAW fluxes using MgO–TiO2–SiO2 and Al2O3–MgO–SiO2 flux system. Ceram. Int. pp. 1–9

  14. 14

    L Sharma and Chhibber R 2020 Design & development of SAW fluxes using CaO–SiO2–CaF2 and CaO–SiO2–Al2O3 flux systems. Ceram. Int., 46(2): 1419–1432

    Article  Google Scholar 

  15. 15

    M Sailender, Reddy G C and Venkatesh S 2016 Influences of process parameters on weld strength of low carbon alloy steel in purged SAW. Mater. Today Proc., 5(1): 2928–2937

    Article  Google Scholar 

  16. 16

    Ragu Nathan S, Balasubramanian V, Malarvizhi S and Rao A G 2015 Effect of welding processes on mechanical and microstructural characteristics of high strength low alloy naval grade steel joints. Def. Technol. 11(3): 308–317

    Article  Google Scholar 

  17. 17

    Prasad K and Dwivedi D K 2008 Some investigations on microstructure and mechanical properties of submerged arc welded HSLA steel joints. Int. J. Adv. Manuf. Technol. pp. 475–483

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The authors sincerely thank Mr. L Sundar and ESAB India Limited for all the support.

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Correspondence to Dixit Patel.

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Patel, D., Soman, S.N. Develop a flux cored wire for submerged arc welding of Ni-Mo low alloy steel. Sādhanā 45, 127 (2020).

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  • Submerged arc welding
  • Ni-Mo low alloy steel
  • element transfer
  • flux basicity