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SKU: ND024-SH

Neodymium Disc Magnets 3/8 in x 3/8 in High Temp N42SH

$ 3.35
$ 3.35

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3/8" x 3/8" N42SH High Temperature Neodymium Cylinder Magnets – 300°F (150°C) Rare Earth Magnets

Quick Facts

Attribute Value
Magnet Type High Temperature Neodymium Rare Earth Cylinder Magnet
Grade N42SH
Shape Cylinder
Diameter 3/8" (0.375")
Height 3/8" (0.375")
Maximum Operating Temperature 300°F (150°C)
Pull Force Over 15 lbs*
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel (Ni-Cu-Ni) Triple Layer
Magnetization Through Thickness
Br Max 13,200 Gauss
Certification ISO Certified

*Note: Actual pull force may vary depending on the application and contact surface. Testing in your specific application is recommended.

Quick Answers

Question Answer
How strong is this magnet? Approximately 15 lbs of pull force under ideal conditions.
What is this magnet made of? NdFeB (Neodymium-Iron-Boron) rare earth material.
What makes N42SH different? N42SH is designed for high-temperature applications and can operate continuously up to 300°F (150°C).
Is it stronger than ceramic or Alnico magnets? Yes. N42SH neodymium magnets typically provide significantly greater magnetic strength while remaining more cost-effective than many high-temperature alternatives such as SmCo, Alnico, and ceramic magnets.
What is it commonly used for? High-temperature motors, sensors, industrial equipment, fixtures, automotive applications, and heat-resistant assemblies.

Product Overview

These 3/8" x 3/8" N42SH High Temperature Neodymium Cylinder Magnets are engineered for dependable performance in elevated temperature environments. Manufactured using N42SH high-temperature grade neodymium, they retain their magnetic properties at temperatures up to 300°F (150°C), making them an excellent choice for applications where standard neodymium magnets may lose strength.

The balanced 3/8-inch diameter by 3/8-inch height provides a true cylindrical profile that fits neatly into drilled holes and precision-machined components. Its compact design delivers deep magnetic strength while allowing accurate positioning in demanding assemblies.

Each magnet features a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating that offers outstanding protection against corrosion, scratches, and chipping while maintaining a smooth, polished finish.

What Is a High Temperature Neodymium Cylinder Magnet?

A high-temperature neodymium cylinder magnet is a permanent magnet made from NdFeB (Neodymium-Iron-Boron) using a specialized alloy designed to withstand elevated operating temperatures without significant loss of magnetic performance.

Unlike standard neodymium magnets, N42SH magnets are engineered for continuous operation at temperatures up to 300°F (150°C), making them ideal for motors, sensors, industrial machinery, automotive systems, and equipment exposed to heat.

These magnets are magnetized through their thickness (height), placing the north and south poles on the two flat circular ends for maximum holding performance.

How Strong Is This Magnet?

This 3/8" x 3/8" N42SH cylinder magnet provides approximately 15 pounds of pull force under ideal conditions using a thick, clean steel surface.

Because cylinder magnets have a relatively small contact area, actual pull force can vary depending on the thickness, flatness, and material of the mating surface. Testing in your intended application is recommended to verify performance.

Technical Specifications

Specification Value
Magnet Type High Temperature Neodymium Rare Earth Cylinder Magnet
Grade N42SH
Shape Cylinder
Diameter 3/8"
Height 3/8"
Maximum Operating Temperature 300°F (150°C)
Material NdFeB (Neodymium-Iron-Boron)
Coating Nickel-Copper-Nickel Triple Layer
Magnetization Through Thickness
Pull Force Over 15 lbs*
Br Max 13,200 Gauss
Certification ISO Certified

Nickel-Copper-Nickel Triple-Layer Coating

Every magnet is protected with a Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating for maximum durability and corrosion resistance.

Benefits

  • Excellent scratch resistance
  • Superior resistance to chipping and cracking
  • Outstanding corrosion protection
  • Smooth, polished metallic finish
  • Long-lasting durability in demanding environments

High Temperature Magnet Grade Comparison

Grade Maximum Operating Temperature Typical Applications
N42 176°F (80°C) General purpose
N42SH 300°F (150°C) Motors, sensors, industrial equipment
N42UH 356°F (180°C) High-temperature machinery
N42EH 392°F (200°C) Industrial and aerospace
N42AH 428°F (220°C) Extreme heat applications

Cylinder Magnet Size Comparison

Size Typical Use
Small Sensors and electronics
Medium Fixtures, woodworking, positioning
3/8" x 3/8" High-temperature assemblies, motors, industrial fixtures
Large Heavy-duty industrial equipment

Applications by Industry

Industry Common Uses
Manufacturing High-temperature fixtures and jigs
Automotive Motors, actuators, sensors
Industrial Equipment Heat-exposed machinery and assemblies
Robotics Positioning systems and mechanical components
DIY & Engineering Custom projects requiring heat-resistant magnets

Common Questions About This Magnet

What is the pull force?

This magnet delivers approximately 15 pounds of pull force under ideal conditions. Actual pull force depends on the application and contact surface.

What makes N42SH different from standard N42?

N42SH is specifically engineered for continuous operation up to 300°F (150°C), allowing it to maintain magnetic performance in environments where standard N42 magnets may begin to lose strength.

Can it rust?

Like all neodymium magnets, it contains iron and can corrode if the protective coating becomes damaged or if exposed to harsh environments for extended periods.

Can it be used outdoors?

Yes. For long-term outdoor or marine applications, additional sealing is recommended to maximize corrosion resistance.

What direction is it magnetized?

This magnet is magnetized through its thickness (height), with the north and south poles located on the two flat circular ends.

Do you offer bulk discounts?

Yes. Contact Super Magnet Store for wholesale pricing and volume discounts on large quantity orders.

Why Buy From Super Magnet Store?

  • Premium high-temperature NdFeB rare earth magnets
  • ISO-certified quality
  • Continuous operating temperature up to 300°F (150°C)
  • More powerful and more economical than many SmCo, Alnico, and ceramic high-temperature magnets
  • Durable Nickel-Copper-Nickel triple-layer coating
  • Consistent magnetic performance
  • Competitive wholesale pricing
  • Bulk discounts available
  • Trusted supplier serving industrial, commercial, and engineering customers worldwide


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Total price$ 92.81

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