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.

Alnico Holding Magnets Red Painted with Female Thread

Alnico Holding Magnets Red Painted with Female Thread

Alnico Holding Magnets Red Painted with Female Thread, AlNiCo Cylindrical Permanent Pot Magnet with inner threaded hole, Magnetic core Rod Bar AlNiCo Deep Pot, Natural or painted finish Magnetic Holding Assemblies, pot magnet systems China Factory Alnico Holding Magnets Red Painted with Female Thread Item No. MP-DPR1-A series Material: Housing steel. Magnetic core Alnico . […]

Deep Pot AlNiCo Magnets without Fitting Tolerance

Deep Pot AlNiCo Magnets without Fitting Tolerance

Deep Pot AlNiCo Magnets without Fitting Tolerance, Smooth electro zinc-plated deep pot magnet, cup magnet system, Alnico Deep Pot Holding System Zinc Plated Body without Fitting Tolerance, Mounting Magnet & AlNiCo Cylindrical Bar Rod Pot Magnet Deep Pot AlNiCo Magnets without Fitting Tolerance Item No. MP-DPB2-A series Material: Housing, steel. Magnetic core AlNiCo. Version:Housing, electro […]

Magnets Deep Pot with Pin AlNiCo

Magnets Deep Pot with Pin AlNiCo

Magnets Deep Pot with Pin AlNiCo, Smooth electro zinc-plated deep pot magnet with pin, shielded system, Magnete Stabgreifer, Alnico Deep Pot Holding System Zinc Plated Body w/ Pin, Mounting Pot Magnet & AlNiCo Cylindrical Pot Magnet Magnets Deep Pot with Pin AlNiCo Item No. MP-DPBP-A series Material: Housing, steel. Magnetic core AlNiCo. Version:Housing, electro zinc-plated. […]

AlNiCo Cylindrical Permanent Pot Magnet with Threaded Neck

AlNiCo Cylindrical Permanent Pot Magnet with Threaded Neck

AlNiCo Cylindrical Permanent Pot Magnet with Threaded Neck, Deep Pot AlNiCo Holding Magnets, steel body Magnetic core Rod Bar AlNiCo Deep Pot with Male thread, magnet system, Magnetic Holding Assemblies, pot magnets China Factory AlNiCo Cylindrical Permanent Pot Magnet with Threaded Neck Item No. MP-DPS2-A series Material: Housing steel. Magnetic core Alnico . Temperature range: […]

Internal Threaded AlNiCo Mounting Pot Magnet Steel Body

Internal Threaded AlNiCo Mounting Pot Magnet Steel Body

Internal Threaded AlNiCo Mounting Pot Magnet Steel Body, Alnico Deep Pot Holding System Threaded Hole, AlNiCo 5 Cylindrical Deep Pot Magnet with female inner thread, Magnetic Holding & Clamping System China Supplier Internal Threaded AlNiCo Mounting Pot Magnet Steel Body feature: • Alnico 5 magnet material and mild steel pot • 220° maximum operating temperature […]

Alnico Deep Pot Holding System Zinc Plated Body with Threaded

Alnico Deep Pot Holding System Zinc Plated Body w/ Threaded

Alnico Deep Pot Holding System Zinc Plated Body w/ Threaded Hole, Internal Threaded Mounting Pot Magnet & Deep Pot Magnet, AlNiCo Cylindrical Pot Magnet with inner thread, Magnetic Holding & Clamping System w/ female thread Alnico Deep Pot Holding System Zinc Plated Body w/ Threaded Hole feature: • Alnico 5 magnet material and mild steel […]

Flat AlNiCo Cylindrical Pot Magnets Steel Body with Fitting Tolerance H6

Flat AlNiCo Cylindrical Pot Magnets Steel Body with Fitting Tolerance H6

Flat AlNiCo Cylindrical Pot Magnets Steel Body with Fitting Tolerance H6, precision ground AlNiCo Holding Deep Pot magnet, AlNiCo-Rod Deep Blind Ended Pot Magnet, AlNiCo cylindrical magnets China supplier Flat AlNiCo Cylindrical Pot Magnets Steel Body with Fitting Tolerance H6 Features • Item No. MP-ADPS series • Alnico deep pot magnets (H6 tolerance) • 220°C […]

Zinc Plated Alnico Deep Pot Magnets

Zinc Plated Alnico Deep Pot Magnets

Zinc Plated Alnico Deep Pot Magnets, Brass spacer Zinc plated body precision ground flat AlNiCo Pot magnet cylindrical without fitting tolerance, H6 tolerance cylindrical deep pot AlNiCo holding magnets Zinc Plated Alnico Deep Pot Magnets Features • Item No. MP-ADPS series • Alnico deep pot magnets (H6 tolerance) • 220°C maximum operating temperature • Ideal […]

Red Painted Round Alnico Holding Button Magnet

Red Painted Round Alnico Holding Button Magnet

Red Painted Round Alnico Holding Button Magnet, Axial Magnetization Two-pole Rounded Horseshoe Cylindrical Casting Alnico Pot Magnet with Keeper, Alnico 5 Holding Magnet, fixing magnet, Deep pot Alnico magnet China factory Red Painted Round Alnico Holding Button Magnet Parameter: Item No. MP-ABPM-25 series A (Mm)31.5 B (Mm)25.5 C (Mm)7.5 Magnetization Axial Weight (G) 136.84 Temperature […]

Cast Alnico5 Cylindrical Button Pot Magnet

Cast Alnico5 Cylindrical Button Pot Magnet

Cast Alnico5 Cylindrical Button Pot Magnet, Two-pole Rounded Horseshoe Cylindrical Alnico Magnet with Keeper, Alnico Button Holding Pot Magnet, cylinder fixing magnet, red paint Deep pot Alnico magnet China exporter Cast Alnico5 Cylindrical Button Pot Magnet Parameter: Item No. MP-ABPM-25 series A (Mm)25.5 B (Mm)16 C (Mm)5.5 Strength (Kg) 8 Magnetization Axial Weight (G) 56.88 […]

Horseshoe Cylindrical Alnico Magnet Button-Type

Horseshoe Cylindrical Alnico Magnet Button-Type

Horseshoe Cylindrical Alnico Magnet Button-Type, Alnico Button Holding Pot Magnet, Alnico 5 Button Magnet with keeper, cylinder fixing magnet, red paint Deep pot Alnico magnet China supplier Horseshoe Cylindrical Alnico Magnet Button-Type Parameter: Item No. MP-ABPM-19 series A (Mm)19 B (Mm)12.5 C (Mm)5 Strength (Kg) 3.5 Magnetization Axial Weight (G) 24.08 Temperature 350 It is […]

Small Holding Alnico Button Magnet

Small Holding Alnico Button Magnet

Small Holding Alnico Button Magnet, Pot Magnets, horseshoe cylindrical Alnico magnet, Alnico 5 Button Magnets, with keeper, cylinder button magnet, Alnico holding magnets, red paint Deep pot Alnico magnet Small Holding Alnico Button Magnet Parameter: Item No. MP-ABPM-12 series A (Mm)12.5 B (Mm)9.5 C (Mm)4 Strength (Kg)1 Magnetization Axial Weight (G)7.63 Temperature 350ºC It is […]

Alnico Button Pot Magnets

Alnico Button Pot Magnets

Alnico Button Pot Magnets, horseshoe cylindrical Alnico magnet, Alnico 5 Button Magnets, with keeper, cylinder button magnet, Alnico holding magnets, red paint Deep pot Alnico magnet with channel Alnico Button Pot Magnets Features: Item No. MP-ABPM series A variety of complex forms Designed with Alnico magnet Magnetism remains stable under very high temperatures High performance […]

Alnico 2 Cow Pill

Alnico 2 Cow Pill

Alnico 2 Cow Pill, original cast Alnico 2 cow magnet, bright metal finish, rounded ends, Hardware Disease in Cattle, Powerful Sintered Alnico Bullet Cattle Magnet, traditional cylindrical rumen COW permanent magnet Made in China Alnico 2 Cow Pill Parameter: Part No.: MPCO-COW-12 Material: AlNiCo 2 Shape: Rod / Bar Finish: Metal / stainless steel Length: 3.000 […]

Durable Original Cast Alnico 5 Cow Magnet

Durable Original Cast Alnico 5 Cow Magnet

Durable Original Cast Alnico 5 Cow Magnet, Standard Cast Alnico Cow Magnet Supplier, 0.625″ Diameter, 2.750″ Length, Alnico 5 Cow Pill, Powerful Sintered Alnico Bullet Cattle Magnet, cylindrical rumen and reticulum magnet Made in China Durable Original Cast Alnico 5 Cow Magnet Parameter: Part No.: MPCO-COW-11 Material: AlNiCo 5 Shape: Rod / Bar Finish: Metal / […]

Alnico Cow Magnets in Alnico Grade 5

Alnico Cow Magnets in Alnico Grade 5

Alnico Cow Magnets in Alnico Grade 5, Durable Superior Educational Cow Magnets, Silver Original Standard Cast Alnico 5 Cow Magnet, 0.50″ Diameter, 3″ Length, Alnico Cow Pill, Powerful Strong Bar Alnico Bullet Cattle Magnet, World famous cylindrical magnet Made in China Alnico Cow Magnets in Alnico Grade 5 Parameter: Part No.: MPCO-COW-10 Material: AlNiCo 5 […]

Circumferentially Oriented Magnets in Hysteresis Coupling

Circumferentially Oriented Magnets in Hysteresis Coupling

Circumferentially Oriented Magnets in Hysteresis Coupling, circumferential direction ring Alnico magnets for hysteresis systems Circumferentially Oriented Magnets in Hysteresis Coupling – In theory, closed circuit means the magnet does not have any exposed poles and will not generate the external magnetic field, then applies no useful application. But in reality, circumferentially oriented magnets can be […]

Alnico 5 Polished Pickup Humbucker Bar Magnet

Alnico 5 Polished Pickup Humbucker Bar Magnet

Fully Magnetized Alnico 5 Polished Pickup Humbucker Bar Magnet, Cast Alnico A5 Bar Guitar Pickup Magnet, Alnico V Magnets FOR Humbucker Pickup Makers or P90 Pickup, Replacement Narrow Alnico Bar smooth humbuckering magnets, original PAF mags cast Alnico magnet China supplier Fully Magnetized Polished AlNiCo 8 Bar Humbucker Magnet Parameters: Part No.  MP-GPBMA5 series Permanent […]

Fully Magnetized Polished AlNiCo 8 Bar Humbucker Magnet

Fully Magnetized Polished AlNiCo 8 Bar Humbucker Magnet

Fully Magnetized Polished AlNiCo 8 Bar Humbucker Magnet, Cast Alnico A8 Bar Replacement Guitar Pickup Magnet, Alnico VIII Magnets FOR Humbucker Pickup Makers or P90 Pickup, Narrow Alnico Bar smooth humbucker magnets, original PAF mags cast Alnico Magnet China Factory Fully Magnetized Polished AlNiCo 8 Bar Humbucker Magnet Parameters: Part No.  MP-GPBMA8 series Permanent Magnet […]

Cast Alnico 4 Bar Guitar Pickup Magnet Magnetized

Cast Alnico 4 Bar Guitar Pickup Magnet Magnetized

Cast Alnico 4 Bar Guitar Pickup Magnet Magnetized, Alnico 4 Magnets FOR Humbucker Pickup Makers, Replacement Alnico Magnet Spacers for Humbucker or P90 Pickup, Narrow Alnico Bar smooth humbucker magnets, original PAF mags cast Alnico Magnet China Factory Cast Alnico 4 Bar Guitar Pickup Magnet Magnetized Part No.  MP-GPBMA4 series, Fully magnetized Alnico 4 bar […]

Alnico 3 Humbucker Pickup Magnets

Alnico 3 Humbucker Pickup Magnets

Alnico 3 Humbucker Pickup Magnets, guitar pickup’s magnet, Pro quality polished cast Alnico 3 bar magnet for humbucker and P90 pickups, Roughcast magnets, smooth humbucker magnets, original PAF mags cast Alnico 3 Magnet China Factory Alnico 3 Humbucker Pickup Magnets Part No.  MP-GPBMA3 series, Characteristics: Similar to Alnico 2 but a bit brighter with clear […]

Unpolished Cast Alnico 2 Bar Magnet

Unpolished Cast Alnico 2 Bar Magnet

Unpolished Cast Alnico 2 Bar Magnet, guitar pickup’s magnet, Pro quality unpolished cast Alnico 2 bar magnet for humbucker and P90 pickups, Roughcast magnets, rough vs. smooth humbucker magnets, original PAF mags rough sand cast Alnico 2 Magnet Characteristics: Alnico 2 Bar Magnet produce warm and very vintage sounding tones, generally has more mid tones. In […]

D70mmxd50mmx20mm Casting AlNiCo Speaker Magnet

D70mmxd50mmx20mm Casting AlNiCo Speaker Magnet

D70mmxd50mmx20mm Casting AlNiCo Speaker Magnet, Strong AlNiCo 5 Ring Magnet, Aluminum-Nickel-Cobalt Motor Permanent Magnet, Speaker Magnet, Industrial Magnet, Rotor Magnets D70mmxd50mmx20mm Casting AlNiCo Speaker Magnet Parameter: Product No.: MPBAM-705020 Length: 70mm Width: 50mm Thickness: 20mm Magnet Type: Alnico Magnet Grade: Alnico 5 Maximum Temperature: 540°C Coating: Uncoated Direction of Magnetism: Through Length Features: 1.Grade:Alnico 1-9, […]

AlNiCo Ring Magnet for Speaker

OD50mmxID40mmxT10mm AlNiCo Ring Magnet for Speaker

OD50mmxID40mmxT10mm AlNiCo Ring Magnet for Speaker, Strong AlNiCo 5 Magnet, Ring Aluminum-Nickel-Cobalt Permanent Magnet, Speaker Magnet, Industrial Magnet, Motor Rotor Magnets OD50mm x ID40mm x T10mm AlNiCo Ring Magnet for Speaker Parameter: Product No.: MPBAM-504010 Length: 50mm Width: 40mm Thickness: 10mm Magnet Type: Alnico Magnet Grade: Alnico 5 Maximum Temperature: 540°C Coating: Uncoated Direction of […]

10000 Gauss Strong Block Square AlNiCo Magnet

10000 Gauss Strong Block Square AlNiCo Magnet

10000 Gauss Strong Block Square AlNiCo Magnet, Through Thickness Magnetic Direction AlNiCo A5 Block Magnet, Aluminum-Nickel-Cobalt Square / Rectangular Block Permanent Magnet, High Corrosion Resistance Magnets 10000 Gauss Strong Block Square AlNiCo Magnet 90mm X 90mm X 10mm Parameter: Product No.: MPBAM-909010 Length: 90mm Width: 90mm Thickness: 10mm Magnet Type: Alnico Magnet Grade: Alnico 5 […]

Cast Alnico 5 Bridge Magnet with Two Through Holes 3.125 W x 2.090 H

Cast Alnico 5 Bridge Magnet with Two Through Holes 3.125″ W x 2.090″ H

Cast Alnico 5 Bridge Magnet with Two Through Holes 3.125″ W x 2.090″ H, red paint finishe Alnico magnets with bridge, Cast Alnico 5 Bridge Magnet With Keeper, Horseshoe Magnets, Pocket Magnets, Red Alnico pot magnets with bridge: Two Through Holes force 125 lbs, Axial, 350ºC Cast Alnico 5 Bridge Magnet with Two Through Holes […]

Powerful Alnico 5 A5 Grade Bridge Magnet 2.750 W x 1.625 H

Powerful Alnico 5 A5 Grade Bridge Magnet 2.750″ W x 1.625″ H

Powerful Alnico 5 A5 Grade Bridge Magnet 2.750″ W x 1.625″ H, Red Painted Alnico magnets with bridge, Cast Alnico 5 Bridge Magnet With Keeper, Horseshoe Magnets, Pocket Magnets, Red Alnico pot magnets with bridge: Two Through Holes force 82 lbs, Axial, 350ºC Powerful Alnico 5 A5 Grade Bridge Magnet Parameter Alnico Bridge Magnet Size: […]

Red Painted Alnico Bridge Magnets 2.250 W x 1.375 H

Red Painted Alnico Bridge Magnets 2.250″ W x 1.375″ H

Red Painted Alnico Bridge Magnets 2.250″ W x 1.375″ H, Alnico magnets with bridge: 2 holes, Cast Alnico 5 Bridge Magnet With Keeper, Horseshoe Magnets, Alnico Pocket Magnets, Red Alnico pot magnets with bridge: Two Through Holes force 52 lbs, Axial, 350ºC Red Painted Alnico Bridge Magnets Parameter Alnico Bridge Magnet Size: 2.250″ W x […]