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40MnSiCrMoB4 Steel
Steel name: 40MnSiCrMoB4
Diagram No.: 8128
Type of diagram: CCT
Mat. No. (Wr. Nr.) designation: 1.5176
DIN designation: 40MnSiCrMoB4
Chemical composition in weight %: 0.32-0.42% C, 0.60-1.30% Si, 0.80-1.40% Mn, 0.60-1.20% Cr, <0.30% Mo, plus others V, Nb, B
Steel group: Bainitic steels
Note: CCT diagram for 40MnSiCrMoB4 steel grade obtained for austenitisation conditions 1050 °C / 7 min leading to a grain size 6-7 ASTM. Dotted curve represents cooling of instrumented light vehicle crankshaft.
Reference: K. Maminska, A. Roth, E. d’Eramo, F. Marchal, A. Galtier, T. Sourmail, A new bainitic forging steel for surface induction hardened components, Conference: SCT 2017 - 5th International Conference on Steels in Cars and Trucks At: Amsterdam, June 2017, pp. 1-8.
Transformation Diagram
Click the image to enlarge the diagram.
Disclaimer: The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.