... ultra low carbon magnetic iron,soft magnetic iron bar SUYB-1, SAE AMS 7707C Iron,The chemical composition and physics ... for car,tractor,lathe f.Magnetic shielding apparatus Charateristic (1).good electromagnet character.Coercive force(Hc)low,high magnetic permeability ... B1000 B2500 B5000 B10000 1.20 (12000) 1.30 (13000) 1.40 (14000) 1.50 (15000) 1.62 (16200) 1.71 (17100) 1.80 (18000) magnetic aging ...