What about the Surface treatment of SmCo Magnets?

As the Samarium Cobalt magnets have better corrosion resistance, the products do not need surface treatments in general. However, some customers need to use Samarium Cobalt magnets as appearance parts, or the application environment of the product is harsh, the product will be required to be plated.

Typical lead time for custom shapes?

2-3 weeks for complex geometries like sensor-embedded arc segments.

Can SmCo magnets replace Alnico in motors?

Yes – Our HT-32 grade provides 3x energy density vs standard Alnico at 400°C.

What factors affect samarium cobalt magnet price?

Samarium cobalt magnet price is affected by grade, size, shape, tolerance, magnetization direction, surface treatment, quantity and processing difficulty. For an accurate quotation, please provide drawings, dimensions and working conditions.

What information is needed to request a SmCo magnet quotation?

Please provide the magnet shape, dimensions, tolerance, grade, magnetization direction, quantity, working temperature and application environment. As a magnetic materials supplier, Souwest Magnetech can also help evaluate your requirements before providing samarium cobalt magnet price.

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Souwest Magnetech Samarium Cobalt Magnets Supplier

Name: Samarium Cobalt Magnets
Brand: NINGBO SOUWEST MAGNETECH DEVELOPMENT CO.,LTD.

Samarium cobalt magnets, also known as SmCo magnets, are strong rare earth permanent magnets made from an alloy of samarium and cobalt. As one of the major rare earth magnet types, they are generally less powerful than neodymium magnets but offer higher temperature resistance, excellent magnetic stability and strong corrosion resistance. SmCo magnets are relatively expensive and brittle, so proper design and handling are important to avoid cracking or chipping. Their maximum energy product (BHmax) usually ranges from 16 MGOe to 32 MGOe, with two main series available: SmCo5 / Series 1:5 and Sm2Co17 / Series 2:17. If you need help selecting the right samarium cobalt magnet grade or want to know the samarium cobalt magnet price, please contact Souwest Magnetech, a professional magnetic materials supplier, for technical support and a fast quotation.

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Wholesale Samarium Cobalt Magnets (SmCo) – Extreme-Temperature Solutions

Souwest Magnetech, a premier samarium cobalt magnets supplier, delivers industry-leading SmCo magnets engineered for applications demanding ultra-high temperature stability (up to 550°C) and corrosion resistance. Ideal for aerospace, military, and energy sectors, our samarium cobalt magnets for sale outperform NdFeB in extreme environments while maintaining magnetic integrity.

Samarium Cobalt Magnet Grades: SmCo5 vs Sm2Co17

SmCo5 and Sm2Co17 are the two main samarium cobalt magnet grades. Both provide stable magnetic performance, corrosion resistance and high-temperature reliability, but they are suitable for different application requirements.

Item	SmCo5	Sm2Co17
Main advantage	Stable performance	Higher samarium cobalt magnet strength
Temperature use	Good	Better for high-temperature applications
Typical use	Sensors, instruments, small components	Motors, aerospace, automotive, industrial parts
Best for	Precision and stable applications	Stronger force and demanding environments

When choosing between SmCo5 and Sm2Co17, buyers should consider magnetic force, working temperature, shape, tolerance and application environment. If your project has strict requirements for samarium cobalt magnet temperature limit, Souwest Magnetech can recommend a suitable SmCo grade based on your drawings and working conditions.

Key Features of Souwest SmCo Magnets

Unmatched Thermal Performance

Operate from -270°C to +550°C with ≤3% flux loss at 300°C
Superior Material Grades

Sm1Co5 (10-18 MGOe) and Sm2Co17 (20-34 MGOe) options
Zero-Corrosion Design

Intrinsic oxidation resistance – no coating required for 90% of applications
Customizable Forms

Discs, blocks, rings, arcs (0.5mm to 150mm) with ±0.02mm precision

Magnetic Performance Table of Souwest Magnetech Sintered Samarium Cobalt Magnet

Magnetic Performance Table of Sintered Samarium Cobalt Magnet

SmCo vs NdFeB Magnets: Critical Comparison

Parameter	Samarium Cobalt (SmCo)	Neodymium (NdFeB)
Max Operating Temp	550°C (Grade HT-38)	220°C (H-grade)
Corrosion Resistance	Inherent (Sm1Co5)	Requires nickel/epoxy coat
Demagnetization Risk	≤1% flux loss at 200°C	≥10% flux loss at 150°C
Cost Efficiency	Higher initial cost	Lower upfront price
Brittleness	Extremely brittle	Moderately durable

Industrial Applications

1. Aerospace & Defense:

· Turbine sensors (MIL-STD-810G certified)

· Satellite guidance systems (radiation-hardened variants)

2. Medical Technology:

· MRI ancillary components (non-interference with imaging fields)

3. Energy & Automotive:

· EV traction motor backups (300°C+ environments)

· Deep-sea drilling sensors (saltwater-resistant Sm2Co17)

4. High-Precision Manufacturing:

· Semiconductor wafer handling (non-contaminating Sm1Co5 grades)

Technical Specifications

· Curie Temperature: 700-800°C (industry-leading thermal threshold)

· Coercivity (Hci): 18-34 kOe (superior demagnetization resistance)

· Surface Treatment: Optional gold/zinc plating for cosmetic or harsh environments

· Certifications: REACH/ROHS compliant

Bulk Order Advantages

✅ Competitive Samarium Cobalt Magnet Price: Volume discounts for 1000+ unit orders
✅ Rapid Prototyping: CNC-machined samples in 48 hours
✅ Global Logistics: DDP shipping with magnetic shielding packaging

Safety & Handling Guidelines

⚠️ Critical Notes for SmCo Magnets:

· Use non-ferromagnetic tools during assembly to prevent chipping

· Store in dry conditions (<60% humidity) to preserve surface quality

· Thermal cycling beyond 550°C causes irreversible flux loss

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Different Shapes of Souwest Magnetech Samarium Cobalt Magnets For Sale

Samarium Cobalt Disc Magnet

Corrosion-resistant round, cylindrical samarium cobalt magnets.
Samarium Cobalt Ring Magnet

Circular shaped samarium cobalt magnets for a variety of applications.
Smco Rectangular Magnet

Highly powerful block and square shaped samarium cobalt magnets.

FAQs – Expert Insights

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Can SmCo magnets replace Alnico in motors?

Yes – Our HT-32 grade provides 3x energy density vs standard Alnico at 400°C.
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Typical lead time for custom shapes?

2-3 weeks for complex geometries like sensor-embedded arc segments.
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What factors affect samarium cobalt magnet price?

Samarium cobalt magnet price is affected by grade, size, shape, tolerance, magnetization direction, surface treatment, quantity and processing difficulty. For an accurate quotation, please provide drawings, dimensions and working conditions.


What information is needed to request a SmCo magnet quotation?

Please provide the magnet shape, dimensions, tolerance, grade, magnetization direction, quantity, working temperature and application environment. As a magnetic materials supplier, Souwest Magnetech can also help evaluate your requirements before providing samarium cobalt magnet price.