AlNiCo

AlNiCo, Sintered And Cast Alnico Magnets, Guitar AlNiCo Pickup, Alnico Rods and Bars, Educational Alnico Horseshoe Magnet, Alnico Channel Magnet, Holding Magnets, Heavy-duty Alnico Magnets China Supplier and Factory

Alnico was developed in the early 1930’s. During World War II it was used in military electronic applications. After the war it quickly spread into civilian versions of those applications and replaced magnet steel in many applications. High induction levels with good resistance to demagnetization and stability, due to its low temperature coefficient (0.02% / °C), at a reasonable cost made Alnico the magnet material of choice.

A high working temperature limit (550 °C / 1020 °F) makes Alnico especially well suited for sensitive automotive and aircraft sensor applications. Alnico is produced in many grades to fit the requirements of these applications, from Alnico 1 to Alnico 12, but the most popular grades are 2, 5 and 8. By comparison to newer materials, the coercivity of Alnico is low.

alnico

alnico

Where Alnico is appropriate, magnet size can be minimized if it can be magnetized after assembly into the magnetic circuit. If used independent of other circuit components, as in security applications, the effective length to diameter ratio (related to the permeance coefficient) must be great enough to cause the magnet to work above the knee in its second quadrant demagnetization curve. For critical applications, Alnico magnets may be calibrated to an established reference flux density value. A by-product of low coercivity is sensitivity to demagnetizing effects due to external magnetic fields, shock, and application temperatures. For critical applications, Alnico magnets can be temperature stabilized to minimize these effects.

Alnico magnet material is made by alloying aluminum, nickel and cobalt with iron. Some grades also contain copper and/or titanium. The alloying process is casting or sintering. The process and the heat treatment needed to optimize magnetic properties produces hard (Rc45) and brittle parts that are best shaped or finished by abrasive grinding. Cast parts are generally under 70 pounds and may be used as-is, but polar surfaces are usually ground flat and parallel. Sintering is confined to high volume parts in sizes under one cubic inch and an effective press length to diameter ratio under four.

To minimize the volume of magnet material required by an application, the entire magnetic circuit must be considered. An optimized circuit design results in a circuit permeance coefficient that causes the magnet to operate above the knee of its demagnetization curve by a margin large enough to offset anticipated operating demagnetizing effects. Optimized steel components result in an effective magnetic length greater than the magnet itself, but this is only effective if the magnet can be magnetized after assembly into the circuit. The alternate is to design the magnet shape to produce a load line, on its own, that intersects the BH curve above its knee, so minimal flux is lost due to the self demagnetizing factor upon removal from the magnetizing fixture. In either case, a magnetizing force of 3.0 kOe must be applied to Alnico 5 magnets and 7.0 kOe for Alnico 8. When magnetized in a magnetic circuit, the magnetizing pulse must be wide enough to allow eddy currents in the steel to decay before dropping below these values.

Rectangle Cast Grade 5 Channel Alnico Magnet

Rectangle Cast Grade 5 Channel Alnico Magnet

Rectangle Cast Grade 5 Channel Alnico Magnet, Channel Rectangular Alnico Magnet, Channel Bar Magnets, Cast Alnico 5 U-Channel Magnets, Casting Alnico Channel Bar Magnet China Factory Supplier Rectangle Cast Grade 5 Channel Alnico Magnet Item No. MPACNL-05 series Alnico Channel Grade 5 material, unpainted gray in color and have a maximum temperature of 550 degrees […]

Channel Rectangular Alnico Magnet

Channel Rectangular Alnico Magnet

Channel Rectangular Alnico Magnet, Channel Bar Magnets, Cast Alnico 5 U-Channel Magnets, Rectangle U-shaped Alnico Magnet Channel Grade5 Casting Channel Magnets, Sintered Alnico Channel Bar Magnet China Factory Manufacturer Channel Rectangular Alnico Magnet Item No. MPACNL-04 series Alnico Channel Grade 5 material, unpainted gray in color and have a maximum temperature of 550 degrees C […]

Alnico Channel Bar Magnets

Alnico Channel Bar Magnets

Alnico Channel Bar Magnets, Cast Alnico 5 U-Channel Magnets, Rectangular Alnico Magnet, U-shaped Alnico Magnet Channel Grade5 Casting Channel Magnets, Sintered Alnico Channel Bar Magnet China Factory Manufacturer Alnico Channel Bar Magnets  Item No. MPACNL-03 series Alnico Channel Grade 5 material, unpainted gray in color and have a maximum temperature of 550 degrees C / […]

Cast Alnico 5 Alnico Channel Magnet

Cast Alnico 5 Alnico Channel Magnet

Cast Alnico 5 Alnico Channel Magnet, Alnico U-Channel Magnets, Rectangular Channel Alnico Magnet, Alnico Magnet Channel Grade5 Cast Channel Shaped Magnets, Sintered Alnico 2 Channel Bar Magnet China Manufacturer Cast Alnico 5 Alnico Channel Magnet U-Channel Magnets Item No. MPACNL-02 series Alnico Channel Grade 5 material, unpainted gray in color and have a maximum temperature […]

Alnico U-Channel Magnets

Alnico U-Channel Magnets

Alnico U-Channel Magnets, Casting Alnico 5 Channel Magnet, Rectangular Channel Alnico Magnet, Cast Alnico Channel Shaped Magnets, Rectangle Alnico Channel Bar Magnet China Manufacturer Alnico U-Channel Magnets Item No. MPACNL-01 series Alnico Channel Grade 5 material, unpainted gray in color and have a maximum temperature of 550 degrees C / Max.Temperature, 1020 °F Length tolerance […]

2-Poles Rotor AlNiCo Magnet in Mounting Shafts

2-Poles Rotor AlNiCo Magnet in Mounting Shafts

2-Poles Rotor AlNiCo Magnet in Mounting Shafts, Turbine Generator Rotor Permanent AlNiCo Magnet, 2-Poles Synchronous Motors and Dynamos Cast Alnico Magnet, Multi-Poles AlNiCo Magnet Assemblies, rotor shaft magnet, Multi Polar Alnico Magnetic Core, custom alnico rotor magnet China FACTORY 2-Poles Rotor AlNiCo Magnet in Mounting Shafts Paramenters Part No.  MPCOARM-2 SERIES Standard Size: 0.437″ Dia. […]

4-Poles Cast AlNiCo Magnet for Rotor

4-Poles Cast Multi-Polar AlNiCo Magnet for Rotor Turbine Generator

4-Poles Cast Multi-Polar AlNiCo Magnet for Rotor Turbine Generator, AlNiCo Rotor Permanent Magnet 4-Poles for Synchronous Motors and Dynamos, Cast Alnico Magnet System, Multi-Poles AlNiCo Magnet, Al-Ni-Co rotor shaft magnet, Multi Polar Alnico Magnetic Rotor Core, custom alnico rotor magnet China Supplier 4-Poles Cast Multi-Polar AlNiCo Magnet for Rotor Paramenters Part No.  MPCOARM-4 SERIES Size: […]

Multi-Poles Rotor Magnet Permanent AlNiCo Six-Poles

Multi-Poles Rotor Magnet Permanent AlNiCo Six-Poles

Multi-Poles Rotor Magnet Permanent AlNiCo Six-Poles, AlNiCo Rotor Magnet 6-Poles for Synchronous Motor, Cast Alnico Motor Rotor Magnet System, Multi-Poles AlNiCo Magnets for Rotor, Al-Ni-Co rotor shaft magnet, Permanent alnico 5 rotor magnet, Six Multi Polar Alnico Magnetic Rotor Core, custom alnico rotor magnet China Supplier Multi-Poles Rotor Magnet Permanent AlNiCo Six-Poles Paramenters Part No.  […]

Disc Alnico Magnet for Sensor Ø20mm x 10mm

Disc Alnico Magnet for Sensor Ø20mm x 10mm

Disc Alnico Magnet for Sensor Ø20mm x 10mm, sensitive automotive and aircraft sensor Alnico magnets, Alnico 2 5 8, Alnico Disc Magnets for small sensors in electronics and general holding applications, Touch Sensor, Color Sensor, Humidity Sensor, Tilt Sensor, Flow and Level Sensor Disc Alnico Magnet for Sensor Ø20mm x 10mm Parameters: Diameter 20mm Thickness […]

Alnico Disc Ø12mm x 5mm

Alnico Disc Ø12mm x 5mm

Alnico Disc Ø12mm x 5mm, sensitive automotive and aircraft sensor Alnico magnets, Alnico 5 Mounted Polepiece Magnets for Guitar Pickup, Alnico Disc Magnets for Pressure Sensor, Light Sensor, Ultrasonic Sensor, Smoke, Gas and Alcohol Sensor, Touch Sensor Alnico Disc Ø12mm x 5mm Parameters: Diameter 12mm Thickness 5mm Direction Of Magnetism Through Thickness Magnet Type Alnico […]

Uncoated Magnetic AlNiCo Rectangular Bar 150mm X 12mm X 6mm

Uncoated Magnetic AlNiCo Rectangular Bar 150mm X 12mm X 6mm

Uncoated Magnetic AlNiCo Rectangular Bar 150mm X 12mm X 6mm, Buy AlNiCo Block Shape Permanent Magnet, Uncoated AlNiCo Block Bar Magnet, sintered or casting Alnico Square / Rectangular Bar Magnets, Magnetic Alnico Blocks & Bars China supplier factory Uncoated Magnetic AlNiCo Rectangular Bar 150mm X 12mm X 6mm Parameter: Product No.: MPBAM-1501206 Length: 150mm Width: […]

Buy Magnet AlNiCo Block 75mm X 12mm X 6mm

Buy Magnet AlNiCo Block 75mm X 12mm X 6mm

Buy Magnet AlNiCo Block 75mm X 12mm X 6mm, Block Shape AlNiCo Permanent Magnet Uncoated AlNiCo Block Bar Magnet, aluminum-nickel-cobalt, Alnico Square / Rectangular Bar Magnets, Magnetic Alnico Blocks & Bars China supplier factory Buy Magnet AlNiCo Block 75mm X 12mm X 6mm Parameter: Product No.: MPBAM-751206 Length: 75mm Width: 12mm Thickness: 6mm Magnet Type: […]

Block Shape AlNiCo Permanent Magnet 50mm X 12mm X 6mm

Block Shape AlNiCo Permanent Magnet 50mm X 12mm X 6mm

Block Shape AlNiCo Permanent Magnet 50mm X 12mm X 6mm, Through Thickness Magnetic Direction AlNiCo Block Bar Magnet, aluminum-nickel-cobalt, Alnico Square / Rectangular Bar Magnets, Magnetic Alnico Blocks & Bars China supplier factory Block Shape AlNiCo Permanent Magnet 50mm X 12mm X 6mm Parameter: Product No.: MPBAM-501206 Length: 50mm Width: 12mm Thickness: 6mm Magnet Type: […]

Alnico Rectangular Magnet 101mm x 15mm x 10mm NS Marked

Alnico Rectangular Magnet 101mm x 15mm x 10mm N/S Marked

Alnico Rectangular Magnet 101mm x 15mm x 10mm N/S Marked, red blue painting alnico education educational magnet AlNiCo Block magnet teaching school Bar Magnet, two poles (“N” & “S”) Square and rectangular Cast or Sintered Alnico magnets China supplier factory Alnico Rectangular Magnet Parameter: Product No.: MPABM-1011510 Length: 101 mm Width: 15 mm Thickness: 10 […]

Sintered Alnico Bar Magnets 75mm x 12mm x 6mm RedBlue

Sintered Alnico Bar Magnets 75mm x 12mm x 6mm Red/Blue

Sintered Alnico Bar Magnets 75mm x 12mm x 6mm Red/Blue N/S Marked, AlNiCo Block magnet teaching school Bar sharp Educational Magnet, Nth Sth Marking Alnico blocks aluminum-nickel-cobalt, Alnico Rectangular Bar Magnets China supplier factory Sintered Alnico Bar Magnets Parameter: Product No.: MPABM-751206 Length: 75 mm Width: 12mm Thickness: 6mm Direction of Magnetism: Through Length Alnico […]

Educational Block Alnico Magnet 60mm x 15mm x 5mm

Educational Block Alnico Magnet 60mm x 15mm x 5mm

Educational Block Alnico Magnet 60mm x 15mm x 5mm  Red / Blue for School, AlNiCo Block magnetic teaching supplier Bar sharp Educational Magnet, Alnico blocks aluminum-nickel-cobalt, Alnico Square / Rectangular Bar Magnets China supplier factory Educational Block Alnico Magnet Parameter: Product No.: MPABM-601505 Length: 60mm Width: 15mm Thickness: 5mm Direction of Magnetism: Through Length Alnico […]

Alnico Block Magnet 50mm x 15mm x 10mm Red Blue

Alnico Block Magnet 50mm x 15mm x 10mm Red / Blue

Alnico Block Magnet 50mm x 15mm x 10mm Red / Blue for Education School, ainico magnets aluminum-nickel-cobalt, Alnico 5 Square / Rectangular Bar Magnets China supplier factory Alnico Block Magnet Parameter: Product No.: MPABM-501510 Length: 50mm Width: 15mm Thickness: 10mm Direction of Magnetism: Through Length Alnico Block Magnets, which include bar magnets, are often used […]

Multi-Pole AlNiCo Magnet 8-Poles for Synchronous Motor Rotor

Multi-Pole AlNiCo Magnet 8-Poles for Synchronous Motor Rotor

Multi-Pole AlNiCo Magnet 8-Poles for Synchronous Motor Rotor, 8-Poles AlNiCo Rotor Magnet, Cast Alnico Cylindrical Magnet Synchronous Motor Rotor System, Multi-Poles AlNiCo Magnets for Rotor, Al-Ni-Co rotor shaft magnet, Permanent alnico 5 rotor magnet, Cast Alnico Permanent Magnet China Supplier Multi-Pole AlNiCo Magnet 8-Poles for Synchronous Motor Rotor Paramenters Part No.  MPCOARM-8 SERIES Size: Size: […]

8-Poles Cast Multi-Pole AlNiCo Rotor Magnet

8-Poles Cast Multi-Pole AlNiCo Rotor Magnet

8-Poles Cast Multi-Pole AlNiCo Rotor Magnet,  alnico rotor magnets with keepers, Multi-Poles AlNiCo Magnets for Rotor, 8-POLE Alnico rotor shaped magnet, Sintered Alnico Cylindrical style Rotor Magnet, Cast Alnico Permanent Magnet China Supplier 8-Poles Cast Multi-Pole AlNiCo Rotor Magnet Paramenters Part No.  MPCOARM-8 SERIES Size: 2.200″ Dia. x 1.350″ Number of Poles: 8 Alnico rotor […]

Cast Alnico C-shaped Magnet

Educational Cast Alnico C-shaped Magnet

Educational Cast Alnico C-shaped Magnet, Alnico Education Magnet, U-Shaped Alnico Horseshoe Magnet w/Red & Green Painted Poles, Magnets for Science, School – Educational Magnets, C Shaped Horseshoe Alnico Magnet Red Blue Painted Pole Physics Experiment Teaching The Educational Cast Alnico C-shaped Magnet has been used for decades in the classroom and science lab to teach […]

C-shaped Alnico Education Magnet

C-shaped Alnico Education Magnet

C-shaped Alnico Education Magnet, U-Shaped Alnico Horseshoe Magnet w/Red & Green Painted Poles, Magnets for Science, School – Educational Magnets, U Shaped Horseshoe Alnico Magnet Red Blue Painted Pole Physics Experiment Teaching The C-shaped Alnico Education Magnet Features: Grade: Cast AlNiCo 5 Coating: Red Blue, Red Green epoxy paint Maximum Temperature: 50°C / 122°F Direction […]

Education Horseshoe Alnico Magnets

Education Horseshoe Alnico Magnets

Education Horseshoe Alnico Magnets, red coated U-shape and C-shape Alnico magnet, Alnico Horseshoe Magnet with keeper for educational science toy, Casting Alnico Pocket Magnets, AlNiCo Horseshoe Industrial Permanent Magnets The Education Horseshoe Alnico Magnets are ideal for lifting, holding, sorting, clamping and retrieving steel or iron parts. Grade: Cast AlNiCo 5 Coating: Red epoxy paint […]

Alnico Horseshoe U-shape Magnet with 2 holes

Extra Large Red Alnico Horseshoe U-shape Magnet with 2 holes

Extra Large Red Alnico Horseshoe U-shape Magnet with 2 holes, red coating U-shape and C-shape cast Alnico magnet, Horseshoe magnet made of AlNiCo, arch form, Red Cast Alnico 5 Horseshoe Magnet With Keeper, Alnico Pocket Magnets, AlNiCo Horseshoe Industrial Permanent Magnets The Extra Large Red Alnico Horseshoe U-shape Magnet with 2 holes is ideal for […]

Red Pianted Alnico Power Magnet

Red Pianted Alnico Power Magnet

Red Pianted Alnico Power Magnet, Cast Alnico 5 Horseshoe Magnet With Keeper, Horseshoe Magnets, Alnico Pocket Magnets, AlNiCo Horseshoe Industrial Magnets, Alnico Power Magnets with one/two holes, U-shape and C-shape cast Alnico permanent magnet Red Pianted Alnico Power Magnet  Features: Made with Alnico magnet Wide variety of forms Stable magnetism that withstands high temperatures High […]

Red Cast Alnico 5 Horseshoe Magnet With Keeper

Red Cast Alnico 5 Horseshoe Magnet With Keeper

Red Cast Alnico 5 Horseshoe Magnet With Keeper, Horseshoe Magnets, Alnico Pocket Magnets, AlNiCo Horseshoe Industrial Magnets, Red Pianted Alnico Minor Magnets, Alnico Power Magnets, U-shape and C-shape cast Alnico magnet with red coating The cast Alnico 5 horseshoe magnet with red coating offers high heat resistance and medium magnetic pull, and comes with a […]

Alnico Horseshoe Magnets

Alnico Horseshoe Magnets

Alnico Horseshoe Magnets, Alnico Pocket Magnets, AlNiCo Horseshoe Industrial Magnets, Red Pianted Alnico Horseshoe Magnets, Alnico Minor Magnets, Alnico Power Magnets, U-shape cast Alnico 5 horseshoe magnet with red coating Alnico Horseshoe Magnets provide a compact, high power magnetic source, and are used for traction, lifting, sorting, clamping and retrieval. They are supplied with ground […]

ALNICO5 Speed Sensor Magnet for ABS System

ALNICO5 Speed Sensor Magnet for ABS System

ALNICO5 Speed Sensor Magnet for ABS System, Sensor AlNiCo Rod Magnet, Reed Sensor Cylindrical Magnet, Position Sensor AlNiCo Permanent Magnet, Sintered and Casting AlNiCo Magnets China Manufacturer ALNICO5 Speed Sensor Magnet for ABS System Technical Introduction Item No.: MPASNM series Magnet Size: Ø5X55MM Tolerances: ±0.004″ Material: Aluminium-Nickel-Cobalt Grade of AlNiCo: AlNiCo500 Shape:  Cylinder, Rod Max […]

Sensor AlNiCo Rod Magnet

Sensor AlNiCo Rod Magnet

Sensor AlNiCo Rod Magnet, Cylinder AlNiCo Permanent Magnetoresistive Sensor Magnet, Cylindrical Aluminium-Nickel-Cobalt Reed Sensor Magnet, Position Sensor AlNiCo Permanent Magnet, Cylinder Sintered and Casting AlNiCo Magnets China Manufacturer Sensor AlNiCo Rod Magnet Technical Introduction Item No.: MPASNM series Magnet Size: Ø8X24MM Tolerances: ±0.004″ Material: Aluminium-Nickel-Cobalt Grade of AlNiCo: AlNiCo500 Shape:  Cylinder, Rod Max Temperature: 450℃ […]