MAGNETIC SHIELDING MATERIAL, MAGNETIC SHIELDING COMPONENT, AND MAGNETIC SHIELDING ROOM

摘要

Disclosed are: a magnetic shielding material having excellent magnetic shielding property at a low magnetic field; and a magnetic shielding component and a magnetic shielding room each using the magnetic shielding material. Specifically disclosed is a magnetic shielding material comprising the following components (by mass): Ni: 70.0-85.0%, Cu: 0.6% or less, Mo: 10.0% or less and Mn: 2.0% or less, with the remainder being substantially Fe. The magnetic shielding material has a relative magnetic permeability of 40,000 or more under a magnetic field of 0.05 A/m and a squareness ratio (Br/B 0.8 ) of 0.85 or less, wherein the squareness ratio (Br/B 0.8 ) is a ratio of a remanent magnetic flux density (Br) to a maximum magnetic flux density (B 0.8 ) in a DC hysteresis curve produced under the maximum magnetic field of 0.8 A/m.