Lamination Materials
Transformer Design Equations
US Standard Lamination Sizes
EI inches
EI metric
Long E inches
Long E metric
EE inches
EE metric
F inches
F metric
L inches
L metric
DU inches
DU metric
UI inches
UI metric
European Lamination Sizes
EI
EE, F
E, EL, ED
EK Staked Stacks
Transformer Lamination Catalog
NICKEL IRON ALLOYS
MATERIAL
DESIGNATION
CODE
DESCRIPTION
Click on material for additional curves:
Super Perm 80
84
80% NiFe Mo
Highest initial permeability
Super Q 80
80
Alloys
Lowest core loss, (LD) grade lowest distortion
Super Therm
74
Constant permeability from -35 to +80° C
Super Perm 49
49
49% NiFe
Highest initial permeability with high flux density
Square 50
46
Perfect grain orientation, square loop
Superflux
VP
2V-49CO, Fe
Highest flux density, for airborne applications
The thickness of laminations is given by Magnetic Metals in Mils, by ASTM in fractions of a millimeter, by others in gauge numbers.
GAUGE
MILS
MM
29
14
.36
35
8
.20
39
6
.15
