By Coating Supplier - Magnets

By Coating

Neodymium Magnets (NdFeB) By Coating

Neodymium magnets are also known as Neodymium-Iron-Boron or Nd-Fe-B or NIB super magnets since they are composed of these elements. The chemical composition is Nd2Fe14B. These magnets are extremely strong for their small size and are metallic in appearance.
Attributes Of Neodymium Magnets
-There are several attributes of Neodymium magnets that differentiate them from other magnets.
-Neodymium magnets are very strong permanent magnets. In fact they are the strongest of all rare earth magnets and also the strongest permanent magnets that exist today.
-Neodymium magnets have a very high resistance to demagnetization. This makes them very useful in many different kinds of industrial applications.
-Even small sized Neodymium magnets have a very high energy. This makes them easily portable from one place to another.
-They are good in ambient temperature.
-Another major attribute of Neodymium magnets that has added to their popularity is the affordability factor. Neodymium magnets, unlike previous high strength magnets like tiny cobalt-samarium magnets, are priced very low and can be afforded by educators and experimenters on their limited budgets.
-Neodymium magnets are very corrosive and hence have to be handled carefully. It is best to coat them for long-term maximum energy output and usage.
-Neodymium magnets have a low working temperature for heat applications and can catch fire at high temperatures.

Neodymium Magnet Coatings:
Titanium (Ti)
Tin (Sn)
Silver (Ag)
Gold (Au)
Zinc (Zn)
Epoxy
Nickel (Ni)
Nickel-Copper-Nickel (Ni-Cu-Ni)
Titanium Nitride (TiN)
Parylene C
Everlube
Chrome
PTFE (also known as “Teflon”; white, black, gray, silvery)
Ni-Cu-Ni plus Epoxy
Ni-Cu-Ni plus Rubber
Zn plus Rubber
Ni-Cu-Ni plus Parylene C
Ni-Cu-Ni plus PTFE
Tin (Sn) plus Parylene C
Zinc Chromate
Phosphate Passivation

Sintered Neodymium Magnet By General Coating / Palting

Nickel-Copper-Nickel (Ni-Cu-Ni)

Most common coating on magnets
Actually 3 layers, nickel-copper-nickel
Protection of the magnet from corrosion in ambient air
Not a protective coating from humidity, water, or salt water
Light protection of the magnet from chipping
A decorative finish
Shiny metallic gray finish
Thickness: 12-25 microns
Cost: Low
Max working Temp: Approximately 200^o C
Gluing nickel coated magnets onto steel or plastic should be done with glue or epoxies specifically designed for magnets.
Main Industries: motors, medical devices (outside of body), sensors, automotive, holding, generators, pumps, thin film deposition. Used in almost all industries

Zinc (Zn)

Good adhesion when glued onto steel with a glue or epoxy specifically rated for magnets
Protection of the magnet from corrosion in ambient air
Slight protection from humidity, water, or salt water, but not consider a good choice if magnet is in moisture or fluids
Thickness of coating is thin, so less air gap between magnet and steel
Dull gray finish
Thickness: 4-8 micron
Cost: Low
Max working Temp: Approximately 120^o C
Main Industries: any application where low temp, low coating cost and little protective barrier is required.

Black Epoxy (EP)

Gray Epoxy (EP)

Epoxy coating is excellent as a barrier for salt air and salt water
Can scratch easily, must be handled carefully during assembly
Very good adhesion to steel with magnet rated glue
Mainly colored in black, however, can be colored in white
Thickness: 15-30 microns
Cost: Medium
Max working Temp: Approximately 200^o C
Gluing nickel coated magnets onto steel or plastic should be done with glue or epoxies specifically designed for magnets.
Main Industries: Marine, motor, sensors, consumer products, automotive

Color Zinc (Cr+Zn)

Good adhesion when glued onto steel with a glue or epoxy specifically rated for magnets
Protection of the magnet from corrosion in ambient air
Slight protection from humidity, water, or salt water, but not consider a good choice if magnet is in moisture or fluids
Thickness of coating is thin, so less air gap between magnet and steel
Dull gray finish
Thickness: 4-8 micron
Cost: Low
Max working Temp: Approximately 120^o C
Main Industries: any application where low temp, low coating cost and little protective barrier is required.

Gold (Au)

FDA approved medical coating for in-body use
Has an undercoating of Ni-Cu-Ni
Protection of the magnet from corrosion in ambient air
Slight protection from humidity, water, or salt water. The thickness of the gold is very thin, so performance in salt spray tests will ultimately show failure of the coating. Making the coating thicker will help, but gold is intended to be thin.
Gold finish
Thickness of gold layer: 0.3-0.6 micron
Cost: High
Max working Temp: Approximately 200^o C
Main Industries: medical (in and out of body applications), jewelry, decorative uses.

Copper (Cu)

Mostly used as a decorative coating
Protection of the magnet from corrosion in ambient air, but is less then nickel
Can rub off over time
Not a protective coating from humidity, water, or salt water
Copper finish
Thickness: 8-10 microns
Cost: Medium
Max working Temp: Approximately 200^o C
Main Industries: Decorative

Chrome (Cr)

Mostly used as a decorative coating
Protection of the magnet from corrosion in ambient air, but is less then nickel
Not a protective coating from humidity, water, or salt water
Chrome finish, dull metallic gray color
Thickness: 12-15 microns
Cost: Low – Medium
Max working Temp: Approximately 200^o C
Main Industries: Jewelry, decorative, cosmetic, consumer products

PTFE (Teflon)

Requires molds and tooling
Excellent protection to magnet against breakage, impact, and corrosion
Available on magnets that are medium to larger in size. Small magnets cannot be molded, but can be sprayed (see Spray PTFE – Teflon)
Provides a protective coating from humidity, fluids and AutoClave
Color of PTFE is white
Thickness: 0.5-1 mm
Cost: molds & tooling are required, and cost is dependent upon complexity of each. Cost / pc will decrease quickly with large quantities
Max working Temp: Approximately 250^o C
Gluing PTFE magnets onto steel or plastic has very poor adhesion. A mechanical hold is recommended
Main Industries: Predominantly medical and food industries.

Phosphate Passivation

Approved as a Food-grade coating
Requires tooling
Excellent protection to magnet against corrosion
Unlike molded PTFE, smaller magnets can be sprayed as well as larger magnets
Provides a protective coating from humidity and fluids
Can scratch, so proper handling is required
Color can be white or black
Thickness: 0.1 – 0.5 mm
Cost: Medium
Max working Temp: Approximately 200^o C
Gluing PTFE magnets onto steel or plastic has very poor adhesion. A mechanical hold is recommended
Main Industries: Predominantly medical and food industries.

Parylene

FDA approved medical coating for in-body use
Protection of the magnet from corrosion in ambient air
Slight protection from humidity, water, or salt water. Parylene will slowly fail in salt water, so an undercoating may be required.
Transparent finish
Thickness: 3-7 micron
Cost: Quantity Dependent. Done in batches, so the higher the quantity, the lower the cost / pc.
Max working Temp: Approximately 150^o C
Main Industries: medical (in body applications), and any product that needs a thin coating

Titanium (Ti-Tin)

FDA approved medical coating for in-body use
Hard coating that has a very strong bond to the magnet
Resilient to most chemicals and environmentally friendly
Protection from humidity and fluids
Finished color is a metallic gold with a smooth surface
Thickness of: 2-3 microns
Cost: Medium
Max working Temp: Approximately 500^o C
Main Industries: Medical

Silver (Ag)

Mostly used as a decorative coating
Protection of the magnet from corrosion in ambient air, but is less then nickel
Soft metal, so can scratch easily
Silver finish
Thickness: 12-15 microns
Cost: Low – Medium
Max working Temp: Approximately 200^o C
Main Industries: Jewelry, decorative, cosmetic, consumer products

Please Click to GET A QUOTE FOR the By Coating

High Temperature Industrial Cylinder Ring Magnet Neodymium

High Temperature Industrial Cylinder Ring Magnet Neodymium, Sintered NdFeB Multipole Radial Oriented Ring Magnets, Radially Neodymium Iron Boron Magnets, Neodymium Radially Magnetised Magnetic Rings High Temperature Industrial Cylinder Ring Magnet Neodymium, Radial Diametrically Magnetized Bonded NdFeb Ring Magnets Material: Neodymium Iron Boron, Neo , Nd , Rare earth NdFeB Size: Customer Request Coating: Nickel / […]

Convex Magnet NdFeB N40

Convex Magnet NdFeB N40, Strong Special Magnet, Customized Neodymium Magnet N40 with Nickel Coating, Super strong disc permanent magnets, Ni-cu-ni plated NdFeB Capped magnets, Neodymium-iron-boron NdFeB N40 Convex Magnet – Strong Special Magnet Coercive force: > 907 (KA/m) Remaining magnetism: 1250-1280 (mT) Intrinsic Coercive Force: > 955 (KA/m) Maximum magnetic energy product: 302-326 (KJ/m3) Material […]

Iron Cap NdFeB N35 Magnets

Iron Cap NdFeB N35 Magnets, Customized Steel Shell Neodymium Magnet N35 ZN, Super strong block magnets in Iron-clad Shell, Zinc plated NdFeB Iron Capped magnets, Neodymium-iron-boron pot magnet Iron Cap NdFeB N35 Magnets – Strong Nd-Fe-B Modified Magnets Coercive force: > 868 (KA/m) Remaining magnetism: 1170-1220 (mT) Intrinsic Coercive Force: > 955 (KA/m) Maximum magnetic […]

Customized Round Corner Magnet N38M ZN

Customized Round Corner Magnet N38M ZN, Super strong block neodymium magnets, Zinc plated NdFeB permanent magnets, Neodymium-iron-boron round corner custom magnet Customized Round Corner Magnet – Strong Magnet Coercive force: > 899 (KA/m) Remaining magnetism: 1220-1250 (mT) Intrinsic Coercive Force: > 1114 (KA/m) Maximum magnetic energy product: 287-310 (KJ/m3) Grade No: N38M (can be ordered […]

Epoxy Coated Lamination Sector Neodymium Magnet

Epoxy Coated Lamination Sector Neodymium Magnet, Laminated Magnet Assembly, Rare Earth NdFeB and SmCo Laminated Permanent Magnet, High Efficiency Motor Laminated Segmented Magnet, Layered Magnet, Segmentation Technology Lamination Magnet, Split Magnet Epoxy Coated Lamination Sector Neodymium Magnet Item No. MPCO-LAMN series Laminated magnets can reduce eddy current Loss in high efficiency motors. High efficiency demands […]

Rod Precision Micro NdFeB Magnets

Rod Precision Micro NdFeB Magnets, Tiny Bar Rare Earth Neo Permanent Magnet, Rod Shaped Precision Neodymium Magnets, cylindrical micro NdFeB magnets, Precision Mini Metal Magnetic Stick Medical Cylinder Neodymium magnet for Sensor Rod Precision Micro NdFeB Magnets Specifications: Dimensions: Diameter 1.5×7 mm Tolerances :±0.002″x ±0.002″ (+/-0.05mm x ±0.05mm) Material: NdFeB Grade N42 Plating/Coating: Ni-Cu-Ni Or Zinc […]

Customized Super Thin NdFeB Block

Customized Super Thin NdFeB Block, Rectangular Micro Magnets, Precision Rectangle Micro Neodymium Magnets, Tiny Block Magnets for medical device,Rare Earth Neo Microblocks for electronic communications, Micro Magnetic Block for Optical and Phone Lens Customized Super Thin NdFeB Block Specifications: Materials: NdFeB Shapes: Rectangle, Block Coating: Black epoxy resin Dimensions: Length: 0.2 to 10.0mm Width: 0.2 […]

Epoxy Coating Ring NdFeB Micro Permanent Magnet

Epoxy Coating Ring NdFeB Micro Permanent Magnet, Sintered Neodymium Iron Boron Micro Tiny Ring Magnets Specifications: Materials NdFeB, Grade: N30-N55, N30M- 52M, N30H-52H, N30SH-48SH, 30UH-42UH, 28EH-40EH, N28AH-35AH Shape Ring, Customized shapes for Neodymium Magnets are available. Dimensions Radius: 3.64mm Width: 5.54mm Thickness: 1.24mm Accept Customized Tolerances Radius: -0.04 to +0.04mm Width: -0.1 to +0.06mm Thickness: […]

Tube Neodymium Micro Magnet

Tube Neodymium Micro Magnet, Sintered Neodymium Iron Boron Ring Micro Tiny Magnets Specifications: Materials NdFeB, Grade: N30-N55, N30M- 52M, N30H-52H, N30SH-48SH, 30UH-42UH, 28EH-40EH, N28AH-35AH Shape Ring, Customized shapes for Neodymium Magnets are available. Dimensions Radius: 9.8mm Width: 2.54mm Thickness: 4.68mm Accept Customized Tolerances Radius: -0.04 to +0.04mm Width: -0.1 to +0.06mm Thickness: -0.03 to +0.03mm Accept […]

Anisotropic Plastic Bonded Magnets

Anisotropic Plastic Bonded Magnets, Anisotropic Bonded NdFeB Permanent Ring Magnets, Plastic Pressed bonded magnets, anisotropic NdFeB radiation (unipolar and multistage ring) magnets Anisotropic Plastic Bonded Magnets Item No. ABNM-03 Anisotropic Bonded NdFeB Magnets – Considerations for achieving high degree of alignment in polymer bonded permanent magnets are presented via the results of a study on in situ […]

Fishing Magnet

Fishing Magnet, 575 LBS Pulling Force, 2.95″ Diameter Round Neodymium Magnet with Countersunk Hole and Eyebolt, round base rare-earth neodymium (NdFeB) cup magnet, Extremely strong Neodymium Magnet with Nickel-Copper-Nickel coated steel cup Fishing Magnet Specifications: Item No.: MPCOSFM-01 Dimensions: 2.95” x .70” Hole Diameter: .25” Material: NdFeB Magnets + A3 Steel Plate Coating: NiCuNi Pulling […]

Anisotropic Bonded Neodymium Magnet

Anisotropic Bonded Neodymium Magnet, Bonded NIB Magnets, Compression Bonded Anisotropic Neodymium Magnets, Epoxy Binder Anisotropic Bonded Magnets, NdFeB Rare Earth compression bonded Multipole ring magnet China Exporter Anisotropic Bonded Neodymium Magnet Material Technology MPCO discovered the manufacturing principles for anisotropic magnetic powder (d-HDDR method) and brought anisotropic bonded magnets to market. In 2017 we also launched our […]

Rectangular Sewing Magnet Button

Rectangular Sewing Magnet Button 25.6 mmx 6 mmx 1.4 mm, PVC Sewing Neodymium Magnet Button, Invisible Hidden PVC Sew in Magnets, Sew-In Magnetic Snap, invisible PVC magnetic clasp Waterproof clothing magnetic buttons China supplier Rectangular Sewing Magnet Button Specifications: Item No.: NSWN35-R25061.5 Snap size(Length x Width x Height): 25 mmx 6 mmx 1.5 mm; Square […]

Rectangle Hidden Invisible Sew-In Magnetic Snap 27x8x3mm

Rectangle Hidden Invisible Sew-In Magnetic Snap 27x8x3mm, Sew-in Hidden Magnets with Rectangle PVC, Sew in Magnets for Bags Clothing Purse Closure, Rectangular Neodymium Sewing Magnet, extremely strong PVC coating block magnet Rectangle Hidden Invisible Sew-In Magnetic Snap 27x8x3mm Specifications: Item No.: NSWN35-R2783 Snap size(Length x Width x Height): 27mmx8mmx3mm; Square pvc size(Length x Width): 42.5mmx19.5mm […]

Ø6x2.5mm Diametral Disc Sensor SmCo Magnet Dimension

Disc Sensor SmCo Magnet Ø6×2.5mm Diametral

Disc Sensor SmCo Magnet Ø6×2.5mm Diametral, Magnetic Position Sensors, Round Rare Earth SmCo permanent magnets for magnetic sensors, Hall sensors, AMR sensors, GMR sensors, TMR sensor, Melexis Triaxis 3D Linear & Rotary Position Sensor Disc Sensor SmCo Magnet Ø6×2.5mm Diametral Data Sheet: Item No. Sm-SDM-6025D Dimensions Discmagnet Ø6 x 2.5mm (±0.05mm) Material SmCo, anisotrop sintered […]

Cylinder Rod PTFE Teflon Coated NdFeB Magnets

Cylinder Rod PTFE Teflon Coated NdFeB Magnets, Rod NdFeB Magnets with PTFE Telfon Coating, PTFE Coated N50 Rare Earth Neodymium Cylindrical Permanent Magnet, PTFE Teflon Coating Bar Magnets, Polytetrafluoroethene Neodymium Rod with Teflon Plating Cylinder Rod PTFE Teflon Coated NdFeB Magnets Features: Part No.: MPPTFE-ROD Series Dimension: Total Dia (D): custom Total High (H): custom Material: […]

Disc Neodymium PTFE Teflon Coated Magnets

Disc Neodymium PTFE Teflon Coated Magnets, Round NdFeB Magnets with PTFE Telfon Coating, PTFE Coated N50 Rare Earth Neodymium Disk Permanent Magnet, PTFE Teflon Coating Circle Magnet, Polytetrafluoroethene Neodymium Disc with Teflon Coated Disc Neodymium PTFE Teflon Coated Magnets Features: Part No.: MPPTFE-DM Series Dimension: Total Dia (D): custom Total Thickness (T): custom Material: Neodymium (NdFeB, […]

PTFE Coated Magnets NdFeB Block

PTFE Coated Magnets NdFeB Block, PTFE Coated N50 Rare Earth Neodymium Block Magnet, PTFE Teflon Coating Square Magnet, Polytetrafluoroethene Teflon Coated Permanent NdFeB Magnets , High Powerful Rectangle Magnet w/ Teflon PTFE Coated Magnets NdFeB Block Features: Part No.: MPPTFE-BM Series Dimension: Total Length (L): custom Total Wide (W): custom Total Thickness (T): custom Material: Neodymium (NdFeB, […]

PTFE Teflon Coated Cuntersunk Magnets

PTFE Teflon Coated Cuntersunk Magnets, PTFE Coated Cuntersunk Neodymium Magnets, PTFE coated Neo Magnets with Countersunk Hole, PTFE Teflon Coating Strong NdFeB Magnet w/ Cuntersink hole, Teflon Coated Magnets with Countersink Hole PTFE Teflon Coated Cuntersunk Magnets Features: Part No.: MPPTFE-CS Series Dimension: Total outter diameter (D): custom Total countersunk hole diameter (d): custom Total height […]

Hall Effect Switch Magnet Sensor N35SH D8 x 8mm

Hall Effect Switch Magnet Sensor N35SH D8 x 8mm, Rotary Encoders Sensor Position Rod NEODYMIUM Permanent Magnet, Hall Effect Switch & Latch NdFeB magnets, Sensor & Switch Magnet China Factory Hall Effect Switch Magnet Sensor N35SH D8 x 8mm Technical Introduction Item No.: MPSNM-N35SH0808 Magnet Size: 8mm x 8mm Tolerances: ±0.004″ Material: Rare Earth NdFeB Grade […]

Reed Switch Magnet Cylinder Sensor N35SH D6 x 8mm

Reed Switch Magnet Cylinder Sensor N35SH D6 x 8mm, Rod NdFeB Magnetostrictive Sensor Position Permanent Magnet, Position and Motion Detection Sensors Nd magnets, Sensor & Switch Magnet China Factory Reed Switch Magnet Cylinder Sensor N35SH D6 x 8mm Technical Introduction Item No.: MPSNM-N35SH0608 Magnet Size: 6mm x 8mm Tolerances: ±0.004″ Material: Rare Earth NdFeB Grade […]

Reed Switch Sensor Permanent Magnet N35SH D4 x8mm

Reed Switch Sensor Position Magnet N35SH D4 x8mm

Reed Switch Sensor Position Magnet N35SH D4 x8mm, Cylinder NdFeB Magnetostrictive Sensor Position Magnet, Position and Motion Detection Sensors PERMANENT magnets, Sensor & Switch Magnet China Factory Reed Switch Sensor Position Magnet N35SH D4 x8mm Technical Introduction Item No.: MPSNM-N35SH0408 Magnet Size: 4mm x 8mm Tolerances: ±0.004″ Material: Rare Earth NdFeB Grade of Neodymium: N35SH […]

Reed Switch Sensor Magnet Neodymium Rod N42H D2 x8mm

Reed Switch Sensor Magnet Neodymium Rod N42H D2 x8mm, Cylinder NdFeB Seneor Magnet, Super Strong Magnetic Rod for Position and Motion Detection Sensors, Precision Rare Earth NdFeB PERMANENT magnets for Reed Switch sensors China Factory Reed Switch Sensor Magnet Neodymium Rod N42H D2 x8mm Technical Introduction Item No.: MPSNM-N42H0208 Magnet Size: 2mm x 8mm Tolerances: ±0.004″ […]

NdFeB Sensor Rod Magnet N35SH D2 x8mm

NdFeB Sensor Rod Magnet N35SH D2 x8mm, Cylinder NdFeB Seneor Magnet, Axial or Diametrical Super Strong Magnetic Hall Effect Sensors Magnet, Precision Rare Earth NdFeB PERMANENT magnets for Reed Switch sensors China Factory NdFeB Sensor Rod Magnet N35SH D2 x8mm Technical Introduction Item No.: MPSNM-N35SH0208 Magnet Size: 2mm x 8mm Tolerances: ±0.004″ Material: Rare Earth NdFeB […]

Magnetic Position Sensor Magnet Round N35SH D4 x2.5mm

Magnetic Position Sensor Magnet Round N35SH D4 x2.5mm, NdFeB Seneor Magnet, MAxial or Diametrical Super Strong Disk Position Sensing Magnet, Precision Rare earth NdFeB disc magnets for magnetic reed sensors, hall effect sensor, and magnetic reed switches Magnetic Position Sensor Magnet Round N35SH D4 x2.5mm Technical Introduction Item No.: MPSNM-N35SH04025 Magnet Size: 4mm x 2.5mm Tolerances: […]

Neodymium Sensor Magnet System N35SH D6 x2.5mm

Neodymium Sensor Magnet System N35SH D6 x2.5mm, Super NdFeB Seneor Magnet, Magnetic Proximity Sensor Super Strong Disk Magnet, Precision Rare earth NdFeB disc magnets for Magnetic Detecting Speed Sensors, Reed Switch sensors Neodymium Sensor Magnet System N35SH D6 x2.5mm Technical Introduction Item No.: MPSNM-N35SH06025 Magnet Size: 6mm x 2.5mm Tolerances: ±0.004″ Material: Rare Earth NdFeB […]

Super NdFeB Seneor Magnet Disk N35SH D8 x2.5mm

Super NdFeB Seneor Magnet Disk N35SH D8 x2.5mm, Disc Magnetic Proximity Sensor Super Strong Magnet, Precision Neodymium Sensor Magnet Disk, Rare earth disc magnets for Magnet Detecting Speed Sensors, Reed Switch sensors Super NdFeB Seneor Magnet Disk N35SH D8 x2.5mm Technical Introduction Item No.: MPSNM-08025 Magnet Size: 4mm x 2mm Tolerances: ±0.004″ Material: Rare Earth […]

Disc Magnetic Proximity Sensor Magnet N35SH D4 x2mm

Disc Magnetic Proximity Sensor Magnet N35SH D4 x2mm, Precision Neodymium Magnet Disk Sensor, Hall Effect Switches and Magnetoresistive sensors Super NdFeB Magnet, Rare earth disc magnets for Magnet Detecting Speed Sensors, Reed Switch sensors Disc Magnetic Proximity Sensor Magnet N35SH D4 x2mm Technical Introduction Item No.: MPSNM-0402 Magnet Size: 4mm x 2mm Tolerances: ±0.004″ Material: […]

12 3 Next