High Permeability 49 is specially processed to yield uniform, isotropic properties and is supplied as cold rolled strip in thicknesses from 0.004 to 0.020 in. (0.1 to 0.51 mm). It has been used for laminations for rotating components such as resolvers and servo-synchros where the magnetic properties must be highly isotropic (i.e., not directionally dependent).
Product Description
| Grade | 1J22 / UNS K94840 |
| Specification | ASTM A753 Alloy 2, IEC 404-8-6 (Alloy class E3), MIL-N-14411B (MR) (Composition 3 and 4) |
| Thickness | 0.1-0.5mm or as customized |
| Width | 500mm to 1250mm or as customized |
| Surface | Mill finish, 2B finish, Polish, Pickled, BA, HL, 2D, No.1, color, bright |
| Application | - Transformer cores - Highly efficient motors - Shielding and specialised electronic devices, such as LF power transducers, chokes, relay parts, solenoids and oscillators. |
Chemical Composition(%)
| Fe | Si | Ni | C | Mn |
| balance | 0.35 | 48 | 0.02 | 0.5 |
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