Soft magnetic alloy for relay and preparation method of soft magnetic alloy

The invention discloses a magnetically soft alloy for a relay and a preparation method of the magnetically soft alloy, belongs to the technical field of magnetically soft alloys, and solves the problem of relatively high room-temperature coercive force of the magnetically soft alloy in the prior art. The magnetically soft alloy for the relay comprises the following components in percentage by mass: less than or equal to 0.01% of C, less than or equal to 0.30% of Mn, 2.00-3.00% of Si, 0.15-0.25% of P, 0.02-0.04% of S, less than or equal to 0.05% of Al, less than or equal to 0.002% of N, less than or equal to 0.002% of O, less than or equal to 0.0005% of H and the balance of Fe and inevitable impurities. The soft magnetic alloy for the relay is low in coercive force. 本发明公开了一种继电器用软磁合金及其制备方法，属于软磁合金技术领域，解决了现有技术中软磁合金的室温矫顽力较高的问题。继电器用软磁合金的组分以质量百分比计包括：C≤0.01％，Mn≤0.30％，Si2.00％～3.00％，P 0.15％～0.25％，S 0.02％～0.04％，Al≤0.05％，N≤0.002％，O≤0.002％，H≤0.0005％，其余为Fe及不可避免杂质。本发明的继电器用软磁合金的矫顽力低。