SKF ToughTech Steel

Steel name: SKF ToughTech
Diagram No.: 8157
Type of diagram: CCT
Chemical composition in weight %: See the table.
Steel group: Bearing steels
Note: Top diagram: The CCT diagrams of the SKF ToughTech steel (lines) vs the steel 100CrMnMoSi8-4-6 (dots) quenching from 870 °C after soaking for 70 min at temperature. “P” denotes pearlite; “B” bainite and “M” martensite.
Bottom diagram: The CCT diagrams of the SKF ToughTech steel (lines) vs the steel 100CrMnMoSi8-4-6 (dots) quenching from 885 °C after soaking for 120 min at temperature. “P” denotes pearlite; “B” bainite and “M” martensite.
Reference: Not shown in this demo version.
Mohamed Y. Sherif, et al., A new through-hardenable high hardenability bearing steel designed by means of simultaneous optimisation of multiple responses using the desirability function approach, pp. 59-68, Bearing World Journal Vol. 4 (2019).

The chemical composition of the vertically continuously cast steel concept, the SKF ToughTech. Heat no. 586200, DEW, Witten, Germany. Unless otherwise stated, the concentrations are in wt%. Hydrogen content was measured in the liquid steel. The balance is iron.


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Transformation diagram


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Transformation diagram


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