Description
HyMu 80 Round Bars
HyMu 80 Round Bars is an unoriented, 80% nickel-iron-molybdenum alloy that offers extremely high initial permeability as well as maximum permeability with minimum hysteresis loss. The alloy has been used primarily in transformer cores, tape wound toroids and laminations where compactness and weight factors are important. It has also been used for shielding to protect electrical components from stray magnetic fields.
HyMu 80 is 80% nickel with additions of iron and molybdenum as main elements in turn this alloy offers an extremely high initial permeability. It is only moderately resistant to moisture and atmospheric corrosion, it used mainly in in transformer cores but is well known for its magnetic properties which are used for shielding electrical components from magnetic fields. “HYMU 80” has a minimum DC permeability of 80,000 at a flux density of 40 gauss when heat treated by the recommended procedure and test in accordance with ASTM 596.
Chemical Composition :
| Element | Min | Max |
| Carbon | – | 0.02 |
| Nickel | 80 | |
| Molybdenum | – | 4.20 |
| Iron | Balance | |
| Silicon | – | 0.35 |
| Manganese | – | 0.50 |
Applications :
HyMu 80 alloy has been used primarily in transformer cores, tape wound toroids and laminations where compactness and weight factors are important. It has also been used for shielding to protect electrical components from stray magnetic fields.
Specifications :
Permalloy
HYMU 80
MAG 7904
MIL N 14411 C, COMP. 1
ASTM A753-78 and ASTM 596
