Improving quench hardening of low carbon steel


  • Thanaporn Korad National Metal and Materials Technology Center
  • Mana Polboon National Metal and Materials Technology Center
  • Niphon Chumchery National Metal and Materials Technology Center
  • John Pearce National Metal and Materials Technology Center


Quenching, Hardening, Superquench, Low-carbon steel


The carbon content in steel determines whether it can be directly hardened. If the carbon content is low (less than 0.25wt%) then an alternate means exists to increase the carbon content of the surface. In this study, the mixed quenchant consisting of brine and surfactants known as Superquench was applied in the quench-hardening process on AISI 1015 low carbon steel. The quench results were compared with quenching in heavy brine solution, water and oil which are recognized as the basic quenchants and cannot cause bulk-hardening low-carbon steels. The hardness tests on different points along the radius of cut round bar specimens were performed, and the results exhibited a greater hardness compared to brine quench. The hardness obtained from water quench was below 20 HRC while quenching in heavy brine solution and Superquench gave a hardness of above 40 HRC.


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Berbenni, S., Favier, V., Lemoine, X. & Berveiller, M. (2004). A micromechanical approach to model the bake hardening effect for low carbon steels. Scripta Mater. 51(4): 303-308.

Blair, M. & Stevens, T.L. (1995). Steel casting handbook. Materials Park, OH: Steel Founders' Society of America: 24-3.24-5.

Chandler, H. (1996). Heat treater’s guide: practices and procedures for irons and steels. Materials Park, OH: ASM International: 85.

Dempsey, J. Quenchants: air, brine, water, oil, synthetics and super quench, FQAs webboard on quenchants in internet resource for blacksmith. (Online). Available: [June 5, 2010.]

Eghbali, B. (2010). Study on the ferrite grain refinement during intercritical deformation of a microalloyed steel. Mat. Sci. Eng. A-Struct. 527(15): 3407-3410.

Jeong, W.C. (2007). Relationship between mechanical properties and microstructure in a 1.5% Mn–0.3% Mo ultra-low carbon steel with bake hardening. Mater. Lett. 61(11-12): 2579-2583.

Ju, D.Y., Yano, T., Yokoda, H., Suda, S. & Hoshino, H. (2003). Effect of bubbling boiling and breaking of steam film on heat transfer coefficient in stirring quenching process. In: Proceedings of 4th International Conference on Quenching and Control of Distortion. May 20-23, Beijing, China: 69-74.

von Bergen, R.T. (1994). The effect of quenchant media selection and control on the distortion of engineered steel parts. Mater. Sci.e Forum. 163-165: 139-150.

Krauss, G. (2005). Steel: processing, structure and performance. Materials Park, OH: ASM International: 20.

Lee, M.K., Kim, G.H., Kim, K.H. & Kim, W.W. (2004). Control of surface hardnesses, hardening depths, and residual stresses of low carbon 12Cr steel by flame hardening. Surface and Coatings Technology. 184(2-3): 239–246.

Automation Creations, Inc., Online materials information resource. (Online).Available: [June 15, 2010.]

Prabhu, K.N. & Fernandes, P. (2007). Effect of surface roughness on metal/quenchant interfacial heat transfer and evolution of microstructure. Mater. Design 28(2): 544- 550.

Starodubov, K.F. (1965). Heat treatment of low carbon steel. Dnepropetrovsk Institute of Ferrous Metallurgy. Translated from: Metallovedenie i Termicheskaya Obrabotka Metallow. 7: 30-32.

Totten, G.E., Bates, C.E. & Clinton, N.A. (1993). Handbook of quenchants and quenching technology. Materials Park, OH: ASM International: 129.

Yin, W., Hao, X.J., Peyton, A.J., Strangwood, M. & Davis, C.L. (2010). Measurement of decarburisation of steel rods with an electromagnetic sensor using an analytical model. NDT & E Int. 43(8): 667-670.




How to Cite

T. Korad, M. . Polboon, N. Chumchery, and J. Pearce, “Improving quench hardening of low carbon steel”, J Met Mater Miner, vol. 21, no. 1, Jun. 2011.



Original Research Articles