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 Magnet character:
   
1,SJ/T 10410-93 Standard;
2,MMPA (0100-87) standard;
3,Physical and reference technical
characteristics of permanent ferrite materials
;


1,SJ/T 10410-93 Standard

Material Br HcB (BH)max
mT KG KA/m KOe Kj/m3 MGOe
Y8T 200~235 2.0~2.35 125~160 1.57-2.01 6.5~9.5 0.8-1.2
Y20 320~380 3.2~3.8 135-190 1.70-2.38 18.0-22.0 2.3-2.8
Y22H 310-360 3.1~3.6 220-250 2.77-3.14 20.0-24.0 2.5-3.0
Y23 320-370 3.2~3.7 170-190 2.14-2.38 20.0-25.5 2.5-3.2
Y25 360~400 3.6~4.0 135~170 1.70-2.14 22.5~28.0 2.8-3.5
Y26H 360~390 3.6~3.9 220~250 2.77-3.14 23.0~28.0 2.9-3.5
Y27H 370~400 3.7~4.0 205~250 2.58-3.14 25.0~29.5 3.1-3.7
Y28 370~400 3.7-4.0 175~210 2.20-2.64 26.0~30.0 3.3-3.8
Y30H~1 380~400 3.8-4.0 230~275 2.89-3.46 27.0~32.0 3.4-4.1
Y30H~2 395~415 3.95-4.15 275~300 3.46-3.77 28.5~32.5 3.5-4.0
Y32 400~420 4.0-4.2 160~190 2.01-2.38 30.0~33.5 3.8-4.2
Y33 410~430 4.1-4.3 220~250 2.77-3.14 31.5~35.0 4.0-4.4

2,MMPA (0100-87) standard

Material
Br
HcB
HcJ
(BH)max
mT
KG
KA/m
KOe
KA/m
KOe
KJ/m3
MGOe
C1
C5
C7
C8A
C8B
C9
C10
C11
230
380
340
385
420
380
400
430
2.3
3.8
3.4
3.85
4.2
3.8
4.0
4.3
148
191
258
235
232
280
288
200
1.86
2.4
3.23
2.95
2.913
3.516
3.617
2.512
258
199
318
242
236
320
280
204
3.5
2.5
4.00
3.05
2.96
4.01
3.51
2.56
8.36
27
21.9
27.8
32.8
26.4
30.4
34.4
1.05
3.4
2.75
3.5
4.12
3.32
3.82
4.32

Note:1mT=10Gs 1KA/m=4лOe 1KJ/m3=4л×10MGOe

 
3,Physical and reference technical
characteristics of permanent ferrite materials

Parameter

Mark

Unit

Value

Recoil permeability

μ    rec

Gs/Oe

1.05-1.3

Curie temperature

Tc

450

The coefficient of demagnetization to temperature

α   (Br)

-1

-0.2%(0-100)

The coefficient of magnetization coercive force to temperature

α   (Hc)

-1

0.2%-0.5%(0-100)

Density

d

g/cm3

4.7-5.0

Resistivity

ρ

Ω,cm

106

The coefficient of linear expansion

α 

-1

7-15×10-6

Hardness

HV

-

480-580


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