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The chart below is list of commonly available grades. The majority of magnets sold by Amazing Magnets are grade N40. The higher the grade (lower in the chart) the more brittle the magnets will be.
Operating Temperatures are grouped by color
for ease of reading. When selecting a working temperature, make sure you will not reach or exceed the Tmax value in the chart, or the magnets will be damaged.
Grade
Br (KG)
Hcb (KOe)
Hci (KOe)
BHmax (MGOe)
Tmax
N35
11.7-12.2
≥10.9
≥12.0
33-36
80C / 176F
N38
12.2-12.5
≥10.9
≥12.0
36-39
80C / 176F
N40
12.5-12.8
≥11.4
≥12.0
38-41
80C / 175F
N42
12.8-13.2
≥11.5
≥12.0
40-43
80C / 176F
N45
13.2-13.8
≥11.6
≥12.0
43-46
80C / 176F
N48
13.8-14.2
≥11.6
≥12.0
46-49
80C / 176F
N50
14.0-14.5
≥10.0
≥11.0
48-51
70C / 158F
N52
14.3-14.8
≥10.0
≥11.0
50-53
70C / 158F
30M
10.8-11.3
≥ 10.0
≥ 14.0
28-31
100C / 212F
33M
11.3-11.7
≥10.5
≥14.0
31-33
100C / 212F
35M
11.7-12.2
≥10.9
≥14.0
33-36
100C / 212F
38M
12.2-12.5
≥11.3
≥14.0
36-39
100C / 212F
40M
12.5-12.8
≥11.6
≥14.0
38-41
100C / 212F
42M
12.8-13.2
≥12.0
≥14.0
40-43
100C / 212F
45M
13.2-13.8
≥12.5
≥14.0
43-46
100C / 212F
48M
13.6-14.3
≥12.9
≥14.0
46-49
100C / 212F
50M
14.0-14.5
≥13.0
≥14.0
48-51
100C / 212F
30H
10.8-11.3
≥10.0
≥17.0
28-31
120C / 248F
33H
11.3-11.7
≥10.5
≥17.0
31-34
120C / 248F
35H
11.7-12.2
≥10.9
≥17.0
33-36
120C / 248F
38H
12.2-12.5
≥11.3
≥17.0
36-39
120C / 248F
40H
12.5-12.8
≥11.6
≥17.0
38-41
120C / 248F
42H
12.8-13.2
≥12.0
≥17.0
40-43
120C / 248F
45H
13.2-13.8
≥12.0
≥17.0
43-46
120C / 248F
48H
13.7-14.3
≥12.5
≥17.0
46-49
120C / 248F
30SH
10.8-11.3
≥10.1
≥20.0
28-31
150C / 302F
33SH
11.3-11.7
≥10.6
≥20.0
31-34
150C / 302F
35SH
11.7-12.2
≥11.0
≥20.0
33-36
150C / 302F
38SH
12.2-12.5
≥11.4
≥20.0
36-39
150C / 302F
40SH
12.4-12.8
≥11.8
≥20.0
38-41
150C / 302F
42SH
12.8-13.2
≥12.4
≥20.0
40-43
150C / 302F
45SH
13.2-13.8
≥12.6
≥20.0
43-46
150C / 302F
28UH
10.2-10.8
≥9.6
25.0
26-29
180C / 356F
30UH
10.8-11.3
≥10.2
≥25.0
28-31
180C / 356F
33UH
11.3-11.7
≥10.7
≥25.0
31-34
180C / 356F
35UH
11.8-12.2
≥10.8
≥25.0
33-36
180C / 356F
38UH
12.2-12.5
≥11.3
≥25.0
36-39
180C / 356F
40UH
12.4-12.8
≥11.3
≥25.0
38-41
180C / 356F
28EH
10.4-10.9
≥9.8
≥30.0
26-29
200C / 392F
30EH
10.8-11.3
≥10.2
≥30.0
28-31
200C / 392F
33EH
11.3-11.7
≥10.5
≥30.0
31-34
200C / 392F
35EH
11.7-12.2
≥11.0
≥30.0
33-36
200C / 392F
38EH
12.2-12.5
≥11.3
≥30.0
36-39
200C / 392F
YXG24
9.5-10.2
=8.7
=18
22-24
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