دليل درجات مغناطيس NdFeB

Understanding NdFeB Magnet Grades

درجات المغناطيس

NdFeB magnet grades tell you how strong a magnet is, how well it resists demagnetization, and how much heat it can handle. These grades make it easier to pick the right magnet for your needs, whether it’s for a consumer device or industrial use.

The naming system usually looks like this: N35, N52, N38SH, and so on. The “N” stands for neodymium, and the number that follows (like 35 or 52) refers to the magnet’s maximum energy product, or BHmax, measured in Mega-Gauss Oersteds (MGOe). This value shows the magnetic strength—the higher the number, the stronger the magnet.

Sometimes you’ll see letters attached, such as SH, UH, EH, AH, or VH. These letters indicate the magnet’s temperature resistance range:

• SH: Safe up to about 180°C
• UH: Safe up to about 200°C
• EH: Safe up to about 220°C
• AH: Safe up to about 230°C
• VH: Safe up to about 240°C

Key parameters in NdFeB magnet grades include:

• BHmax (Maximum Energy Product): cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
• Intrinsic Coercivity (Hci): cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
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Common NdFeB Magnet Grades and Their Characteristics

Soft magnet Grades N33 N35 N38

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• المزايا: cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
• العيوب: cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Medium magnet Grades N40 N42 N45

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High magnet Grades N48 N50 N52

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Heat Resistant magnet Grades SH UH EH AH VH

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• cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits حتى 200°C
• cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits حتى 220°C
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Rare and Custom magnet Grades

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• Often used in cutting-edge tech, renewable energy, or specialized manufacturing.
• Custom orders might take longer but ensure the magnet fits perfectly in specialized U.S. industries.

Performance Comparison of Various magnet Grades

Understanding how different NdFeB magnet grades stack up requires looking at key parameters like BHmax (maximum energy product), Hci (intrinsic coercivity), Br (remanence), and درجة الحرارة التشغيل القصوى. These factors directly affect how a magnet performs in everyday applications, determining its strength, resistance to demagnetization, and ability to work under heat.

Here’s a simple comparison table to visualize these differences:

How These Parameters Affect Performance

• BHmax (Magnetic Strength)

  Higher BHmax means stronger magnets. For example, N52 offers the highest magnetic force but may not be the best in high heat.

• Hci (Coercivity)

  This is a magnet’s ability to resist becoming demagnetized. Higher coercivity values (like in SH, UH, EH grades) mean the magnet holds its strength better in tough conditions.

• Br (Remanence)

  Indicates the magnet’s residual magnetism. This impacts the overall magnetic field strength available for use.

• درجة الحرارة التشغيلية القصوى

  Critical for applications in motors, automotive, or renewable energy where magnets face heat. Standard grades max out around 80°C, while SH, UH, and EH grades can withstand 150-200°C or more.

Choosing the right grade depends on balancing these factors based on the specific needs—whether it’s just strong magnetic pull, resistance to heat, or longevity under tough environments.

For more detailed guidance on picking the best grade, check out our article on which is better N42 or N52 magnets.

Applications for Different NdFeB Magnet Grades

NdFeB magnets are everywhere, and different grades fit different needs. Here’s how various industries use specific grades to get the best performance:

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Factors to Consider When Choosing an NdFeB Magnet Grades

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Required Magnetic Strength

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Operating Temperature Range

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Mechanical and Environmental Conditions

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Cost Considerations

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Availability and Supply Chain

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Quality Control and Industry Standards

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits ISO guarantee consistent quality through well-defined manufacturing processes. At the same time, RoHS و REACH certifications confirm that magnets are free from hazardous substances, making them safe for end users and environmentally friendly.

At NBAEM, quality control is a top priority. Each batch of magnets undergoes thorough testing, including:

• Magnetic strength verification (BHmax, Br)
• Intrinsic coercivity (Hci) checks
• Temperature resistance testing up to specified grade limits
• Physical inspections for defects or inconsistencies

This rigorous certification process ensures the magnets perform reliably in your applications, whether for industrial uses, electronics, or automotive systems. NBAEM’s commitment to meeting these industry standards reflects their focus on providing high-quality, compliant NdFeB magnet grades tailored for U.S. customers.

Why Choose NBAEM for Your NdFeB Magnet Supply

When it comes to sourcing high-quality NdFeB magnets, NBAEM stands out as a reliable supplier catering to the U.S. market’s needs.

Manufacturing Capabilities

• Advanced production lines with precise control over magnet composition and dimensions
• Ability to produce a wide range of NdFeB magnet grades from soft to heat resistant types
• Custom manufacturing that fits unique industrial specifications

ضمان الجودة

• Strict testing procedures to ensure magnets meet international standards like ISO, RoHS, and REACH
• Consistent magnetic performance and durability guaranteed
• Regular quality checks at every manufacturing stage

Customization and Pricing

• Tailored magnet solutions based on your application requirements
• Competitive pricing without compromising on material or magnetic strength
• Flexible order sizes, from prototypes to large-volume production runs

Technical Support and Bulk Orders

• Expert consultation available to help select the optimal NdFeB magnet grade
• Guidance on magnet integration and performance optimization
• Efficient handling of bulk orders with timely delivery

Partnering with NBAEM means reliable supply, quality products, and professional support—all crucial for your NdFeB magnet needs. For more on our manufacturing range and magnet types, check out our high temperature magnets page or explore the main magnetic properties of these powerful magnets.