{"id":10453,"date":"2026-09-04T15:38:44","date_gmt":"2026-09-04T07:38:44","guid":{"rendered":"https:\/\/am-material.com\/?p=10453"},"modified":"2026-07-22T15:46:30","modified_gmt":"2026-07-22T07:46:30","slug":"complete-guide-to-fenimo-soft-magnetic-powder-for-additive-manufacturing","status":"publish","type":"post","link":"https:\/\/am-material.com\/fr\/news\/complete-guide-to-fenimo-soft-magnetic-powder-for-additive-manufacturing\/","title":{"rendered":"Complete Guide to FeNiMo Soft Magnetic Powder for Additive Manufacturing"},"content":{"rendered":"

R\u00e9ponse rapide<\/h2>\n\n\n\n

FeNiMo soft magnetic powder<\/strong> is the powder-metallurgy form of molybdenum permalloy, a nickel-iron-molybdenum alloy containing roughly 78-80 percent nickel and 4-5 percent molybdenum that delivers the highest magnetic permeability of any commercially practical alloy system. Gas-atomized spherical powder is supplied in 15-45 um cuts for LPBF, 0-25 um for MIM, and insulated fractions for pressed powder cores, with initial permeability of 50,000-100,000, coercivity below 5 A\/m, and electrical resistivity two to three times that of silicon iron. The alloy serves magnetic shielding, high-frequency inductor cores, precision current sensors, and flux concentrators wherever minimum core loss and maximum permeability outweigh its moderate 0.75-0.9 T saturation induction.<\/p>\n\n\n\n

Propri\u00e9t\u00e9<\/th>Valeur<\/th><\/tr><\/thead>
Syst\u00e8me d'alliage<\/td>Ni-Fe-Mo molybdenum permalloy (~79Ni-4Mo-Fe)<\/td><\/tr>
Densit\u00e9<\/td>8.7 g\/cm3<\/td><\/tr>
Granulom\u00e9trie typique de la poudre (LPBF)<\/td>15 \u00e0 45 \u00b5m<\/td><\/tr>
Typical Powder Size (MIM\/cores)<\/td>0-25 um<\/td><\/tr>
Initial Permeability<\/td>50,000-100,000<\/td><\/tr>
Coercivity (annealed)<\/td>< 5 A\/m<\/td><\/tr>
Induction de la saturation<\/td>0.75-0.9 T<\/td><\/tr>
R\u00e9sistivit\u00e9 \u00e9lectrique<\/td>0.55-0.62 uOhm.m<\/td><\/tr>
Avantage cl\u00e9<\/td>Highest practical permeability with very low core loss<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

What Is FeNiMo Soft Magnetic Powder and Its Material Benefits<\/h2>\n\n\n\n

FeNiMo soft magnetic powder<\/strong> appartient \u00e0 la poudre magn\u00e9tique douce<\/a> family and replicates the chemistry of molybdenum permalloy, the alloy class that has defined the upper limit of magnetic softness for over half a century. The molybdenum addition to the high-nickel permalloy base is the critical refinement: it raises electrical resistivity, which suppresses eddy-current loss, and it permits simultaneous minimization of magnetocrystalline anisotropy and magnetostriction through heat treatment, the two physical properties that together determine how freely domain walls move.<\/p>\n\n\n\n

In powder form, the alloy’s benefits for engineering programs include:<\/p>\n\n\n\n