... iron remelt ingot,electric steel(iron),electric magnetic iron,ultra low carbon magnetic iron,soft magnetic iron bar SUYB-1, SAE AMS 7707C ... Charateristic (1).good electromagnet character.Coercive force(Hc)low,high magnetic permeability,high saturation induction density (Bs),stable magnet and ... 15000) 1.62 (16200) 1.71 (17100) 1.80 (18000) magnetic aging:keep 100 degree for 100 hours or Condition is ...