Samarium-cobalt magnets (SmCo)

Operating temperature , °C

up to +350

Property stability , years

>50

Доступно к заказу

Delivery options:

Самовывоз в г.Тула

Доставка до ТК

Доставка до "дверей"

Warranty 1 year

Samarium-cobalt (SmCo) magnets are high-tech second-generation rare-earth permanent magnets that hold a special place in modern industry. Developed in the 1960s, these magnets represented a breakthrough in magnetic materials, offering a unique combination of high magnetic energy and exceptional thermal stability.

Unlike the more common neodymium-iron-boron (NdFeB) magnets, samarium-cobalt products retain their magnetic properties in extreme operating conditions—at temperatures ranging from -270°C to +350°C, in vacuum environments, under high radiation levels, and in aggressive chemical environments.

Key advantages:

Operating temperature up to +350°C
No protective coatings required
Property stability >50 years
Resistance to corrosion and oxidation
Operation in vacuum and radiation fields

APPLICATIONS

SmCo magnet applications

Oil and Gas Industry

Downhole motors and turbodrills
MWD/LWD measurement tools
Pressure and temperature sensors
Conditions: up to 200°C, pressure up to 1000 atm

Medical Equipment

MRI scanner components
Implantable devices
Surgical instruments
Requirements: biological inertness

Industrial Equipment

Servo and stepper motors
High-temperature generators
Magnetic separators
Vacuum pumps

Electronics and Microwave Technology

Waveguides and resonators
Hall effect sensors
Ultrasonic transducers

COMPARISON WITH OTHER MAGNETS

Why SmCo?

Criterion	SmCo	NdFeB	Ferrites
Operating temperature	up to 350°C	up to 200°C	up to 250°C
Corrosion resistance	Excellent	Low	Good
Coating	Not required	Mandatory	Not required
Magnetic energy	15–32 MGOe	28–52 MGOe	3–5 MGOe
Durability	>50 years	10–20 years	10–15 years

QUALITY CONTROL

Quality guarantee

Every batch undergoes:

Magnetic measurements (hysteresisgraph, fluxmeter)
Geometric inspection (CMM, micrometers)
Visual inspection (microscope)
Corrosion resistance testing
Quality certificate with actual characteristics

Certification:

GOST compliance
International standards
Complete set of documentation

FREQUENTLY ASKED QUESTIONS

Questions and answers

Can SmCo be used instead of neodymium magnets? Yes, if the operating temperature is >150°C, corrosion resistance without coating is required, or long-term stability is critical.

Do SmCo magnets need to be coated? In most cases, no. SmCo has natural corrosion resistance. Coating is only required for extremely aggressive environments or biomedical applications.

How long do SmCo magnets last? When stored properly, SmCo magnets retain >99% of their properties for over 50 years. Losses amount to <1% over 10 years.

Can SmCo magnets be cut? Yes, using specialized methods: electrical discharge machining (EDM), diamond grinding with cooling, and laser cutting. They cannot be sawed or drilled with conventional tools.