Q420 FRE Steel

Steel name: Q420 FRE
Diagram No.: 8111
Type of diagram: CCT
GB designation: Q420 FRE
Chemical composition in weight %: 0.05% C, 0.20% Si, 0.80% Mn, 0.01% P, 0.001% S, 0.50% Cr, 0.20% Mo, 0.09% Nb, 0.015% Ti
Steel group: Fire-resistant steels
Note: Austenitizing temperature: 1300 C. Continuous cooling transformation diagram of simulated CGHAZ.
Reference: Wang, H.H., Qin, Z.P., Wan, X.L. et al. Continuous cooling transformation behavior and impact toughness in heat-affected zone of Nb-containing fire-resistant steel. Met. Mater. Int. 23, 848–854 (2017). https://doi.org/10.1007/s12540-017-6776-8

Transformation Diagram


Click the image to enlarge the diagram.

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