boron arms Nd-Fe-B-alloy and process for production thereof

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Alloy with a proportion by weight of rare earths including yttrium [SE] 31 wt- % and less than or equal to 35 of greater, 1% by weight, with a boron content of 0.6 to 1.5 wt. - % [B], in a proportion by weight of at least 0.1 wt- % in the sum of at least two elements selected from the group consisting of Al, cu, Ga, bi, Sn, Zn, Nb and Si, and [O] with weight proportions, [ C], [ n], [ P] of [S] and 5 wt- % in the sum does not exceed from the group of elements O, carbon, N, S and P and with parts by weight from the group of elements Fe, co and a balance of Ni and production-related impurities, wherein for the finished alloy has the following relationship applies :