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Technical Paper

Development of Restricted Hardenability Band Steels

Modern steelmaking practices enable closer control of chemical composition and hardenability, and some manufacturers are already specifying narrow hardenability limits. This paper reviews a recent activity of SAE Division 8, Carbon and Alloy Steel Hardenability, that developed restricted hardenability bands for a series of steels. The paper summarizes the need for restricted hardenability limits and the methods used to develop the new bands for the proposed SAE Standard J1868.