Steel material and soft magnetic component
A steel material with a tailored chemical composition addresses the challenges of magnetic properties, cold forgeability, and machining issues by optimizing elements like Sb and P, achieving improved chip evacuation and drill resistance for efficient machining of complex soft magnetic components.
WO2026141431A1PCT designated stage Publication Date: 2026-07-02NIPPON STEEL CORPORATION
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- NIPPON STEEL CORPORATION
- Filing Date
- 2025-12-23
- Publication Date
- 2026-07-02
Smart Images
Figure JP2025045179_02072026_PF_FP_ABST
Abstract
A steel material according to the present disclosure contains, in mass%, 0.0300% or less of C, 0.200% or less of Si, 0.10-0.50% of Mn, 0.0300% or less of P, 0.0300% or less of S, 0.0200% or less of Al, less than 0.0080% of N, 0.001-0.030% of O, and 0.0030-0.0130% of Sb, the remaining portion being Fe and impurities, and Fn defined by formula (1) being 10.0-22.0. (1): 4.26×ln(Sb×(10×Sb+6×P))+47.05 To each element sign in formula (1), the contained amount of a corresponding element is assigned in mass%, and ln in formula (1) indicates natural logarithm.
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