Samarium Cobalt Magnets

The Samarium Magnet Company is the world’s leading producer of high-performance samarium cobalt magnets, delivering unmatched strength, temperature resistance, and precision manufacturing.

Our samarium cobalt magnets set the benchmark standard for the global industry with temperature ratings above 350 °C (662 °F), tight machining tolerances to ±0.00007874 inches or ±0.0002 cm, and magnetic energy up to 32 MGOe — making them the preferred choice for aerospace, defense, propulsion, and nuclear systems where reliability is not negotiable.

While nearly every other supplier depends on China’s export-controlled supply chain, our production is completely independent and unrestricted, allowing us to manufacture and deliver faster, cleaner, and with full complianceno export licenses, no waiting, no risk.

We produce every SmCo configuration available on the global market, including both SmCo 1:5 and SmCo 2:17 grades, across multiple coercivity classes and geometries: discs, rings, arcs, blocks, and custom assemblies.

Material


Grade


Remanence


Coercivity


Energy Density


Max Operating Temperature

T
kG
KA/m
kOe
KA/m
kOe
KJ/m3
MGOe
°C
SmCo5
SM18
0.90
9.0
700
8.8
2405
23
143
18
250°C
SmCo5
SM20
0.94
9.4
725
9.1
2405
23
159
20
250°C
SmCo5
SM22
0.97
9.7
748
9.4
2405
23
175
22
250°C
SmCo5
SM24
1.02
10.2
780
9.7
2405
23
195
24
250°C
Sm2Co17
SM24A
1.02
10.2
772
9.7
≥1435
≥18
191
24
300°C
Sm2Co17
SM26
1.05
10.5
796
10.0
≥1435
≥18
207
26
350°C
Sm2Co17
SM28
1.08
10.8
820
10.3
≥1435
≥18
223
28
350°C
Sm2Co17
SM30
1.11
11.1
836
10.5
≥1590
≥18
239
30
350°C
Sm2Co17
SM30H
1.11
11.1
836
10.5
≥2010
≥25
239
30
350°C
Sm2Co17
SM32A
1.13
11.3
860
10.8
≥1990
≥25
255
32
350°C
Sm2Co17
SM32X
1.15
11.5
880
11.0
≥1990
≥25
262
32
350°C
Sm2Co17
SM35
1.20
12.0
890
11.5
≥1990
≥20
270
35
350°C
Sm2Co17
SM38
?
?
?
?
?
?
?
38
425°C
Note: Our samarium cobalt gets this color because we manufacture everything from scratch with fresh raw materials. We will never sell you the second-handed stuff.
Our complete catalogue of samarium cobalt magnets  →
**This list showcases our most popular samarium cobalt magnet specifications. A full range of chemistries, and custom configurations is available in our complete SmCo magnet catalogue.

Didn’t find your exact specification? We specialize in producing custom samarium cobalt magnets — from prototype to production. Share your requirements, and we’ll start engineering your next-generation magnets today.

Whether you need a single prototype or a full-scale production run, The Samarium Magnet Company delivers with unmatched speed and precision. Our vertically integrated Gulf-based facilities enable rapid turnaround, single-unit custom orders, and global delivery within 12 days — the fastest lead time for Samarium Cobalt magnets in the world. All production is fully independent of Chinese export licensing, ensuring unrestricted, compliant supply for the U.S., European, and allied markets. We provide a secure and predictable sourcing alternative for defense, aerospace, and industrial buyers navigating tightening global restrictions.