Performance characteristic: 
Fe-based amorphous soft magnetic materials have the similar Permalloy initial permeability and temperature stability, compared to Permalloy has a smaller proportion and lamination factor, size and performance in the core under the same conditions, permalloy lighter than the price lower.

Magnetic parameter	Saturation magnetic induction (T)	Initial permeability (Gs/Oe)	Maximum permeability (Gs/Oe)	Density (g/cm 3 )	Curie temperature (C)	Stack
Amorphous core	1.2	40, 000-80, 000	> 200, 000	7.2	570	> 0.70
Permalloy core	0.76	50, 000-80, 000	> 200, 000	8.75	400	0.80
Silicon steel core	2.03	1, 000	40, 000	7.65	740	0.85

  
Specifications: 

No	Core dimension
	OD(mm)	ID(mm)	HT(mm)
1	82	44	23
2	85	44	30
3	105	56	23
4	105	56	28
5	119	76	25
6	125	57	35
7	124	81	25
8	136	76	45
9	159	93	25
10	190	140	54
11	200	120	43
12	230	160	30
13	234	152	43
14	250	150	65
15	260	170	60