Introduction

Soft magnetic alloys produced by NiWire are nickel-iron alloys that contain from about 35 to 81% of nickel. These alloys are using in applications requiring the following characteristics: high permeability, high saturation magnetostriction, low hysteresis-energy loss, low eddy-current loss in alternating flux, low curie temperature, vonstant permeability with changing temperature.

NiWire has been manufacturing soft magnetic alloys for many years. They are used for instrument transformers, radar pulse transformers, transducers, shielding, tape recorder head laminations and so on.

Main grades

Chemical Grade Saturation induction
Bs/T
Rs
Br/Bm
Curie Temp
Tc/℃
Coercive force
Hc/A·m-1
Initial Permeability
mH·m-1
Max Permeability
μm/mH·m-1
Resistivity
μΩ·cm
46NiFe   ≥1.50 0.75 400 ≤12 2.5-4.5 22.5-45 45
50NiFe   ≥1.50 0.72 500 ≤8.8 2.8-5.9 31-65 45
65Ni2.5MoFe   ≥1.20 0.9 530 6.4 200-438 45
76Ni5Cu2CrFe   0.75 400 4.8 18.8-31.3 75-225 55
77Ni4Mo5CuFe   0.60 350 2.0 37.5-75.0 175-312 55
79Ni4MoFe 79 Permalloy 0.75 450 4.8 15-32 87.5-275 55
80Ni3CrFe   ≥0.65 330 ≤4.8 17.5-44 75-200 62
80Ni5MoFe   0.70 400 4.8 20-75 87.5-325 56
81Ni6MoFe   ≥0.60 ≤4.0 12.5-62.5 100-250 60