Corrosion study on low alloy high phosphorus steel


  • Basanta Kumar Jena DBRAIT, Port Blair, A&N Island
  • Nandita Gupta National Institute of Foundry & Forge Technology, Hatia, Ranchi-834003
  • Balbir Singh R & D Centre for Iron and Steel, SAIL, Doranda, Ranchi-834002, India,
  • Gadadhar Sahoo R & D Centre for Iron and Steel, SAIL, Doranda, Ranchi-834002


Weathering steel, High phosphorus steel, Tafel polarization, Electrochemical impedance spectroscopy, Cyclic salt spray test


The effect of P on corrosion behaviour of low alloy steels exposed for one month cyclic wet/dry salt spray was investigated and compared with low carbon steel. Electrochemical Impedance Spectroscopy (EIS) results revealed that the rust resistance (Rrust) increased with the number of salt spray test cycles. The higher phosphorus content steel (G12) exhibited higher rust resistance (Rrust) than that of low phosphorus content steels (SCR & G11), while similar corrosion rate was noticed from the Tafel extrapolation study in 3.5% NaCl solution for all the test samples. All steels revealed ferrite pearlite microstructure. The larger ferrite grain of G12 steel containing highest phosphorus content (0.42 wt. % P) is attributed to the effect of phosphorus.


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Author Biographies

Basanta Kumar Jena, DBRAIT, Port Blair, A&N Island

Mechanical Engineering Deptt.

Nandita Gupta, National Institute of Foundry & Forge Technology, Hatia, Ranchi-834003

Head, Deptt. of Foundry Technology

Balbir Singh, R & D Centre for Iron and Steel, SAIL, Doranda, Ranchi-834002, India,

DGM & Head, Physical Metallurgy

Gadadhar Sahoo, R & D Centre for Iron and Steel, SAIL, Doranda, Ranchi-834002

Deputy Manager, Physical Metallurgy Group


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How to Cite

B. K. . Jena, N. Gupta, B. . Singh, and G. Sahoo, “Corrosion study on low alloy high phosphorus steel”, J Met Mater Miner, vol. 24, no. 1, Mar. 2014.



Original Research Articles