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ISO Strong Power Alnico 8 Pickup Magnet 5mm Custom Bar Magnets

Categories Alnico Permanent Magnet
Brand Name: UNMAG
Place of Origin: China
MOQ: 100pcs
Payment Terms: T/T L/C
Supply Ability: 20 tons per month for SmCo magnet
Delivery Time: 20-25days
Packaging Details: cartons,pallets
Matetrail: Alnico
Size: 40*20*5MM
Shape: Block
Direction of Magnetization: Thru thickness
Tolerance: ±0.1
Grade: Alnico 5
Price: As negotiation
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ISO Strong Power Alnico 8 Pickup Magnet 5mm Custom Bar Magnets

Strong Power Alnico 8 Bar Magnet

Alnico Magnet


These magnets are based mainly on iron (Fe), aluminum (Al), nickel (Ni) and cobalt (Co). The magnets are fragile
and not ductile. Therefore, after the raw metal is melted at high temperature and turned into an alloy, it is cast into a
casting mold. These magnets are therefore also known as cast magnets.Al-Ni-Co magnets achieve high Br values and
high temperature stability, readily cause low-temperature demagnetization and thermal demagnetization, achieve
high mechanical strength, and offer other advantages. However, these magnets have low magnetic coercive force
and readily undergo demagnetization due to an external magnetic field, are unsuited for thin products, and placed
under other constraints. In the design process, it is therefore important to select a method of magnetization
that allows for sufficient shape and magnetic characteristics, and a method of assembly in
which consideration is given to demagnetization.

Produced by casting or sintering powder metallurgical technique with alloy composite of Al-Ni-Fe-Co

Alnico is a very hard and brittle material and does not lend itself to conventional machining.
UNMAG have experienced machinists and the proper equipment to grind alnico to its required dimensions.

Characteristic of Both Cast and Sintered Alnico magnet


Very temperature stable, great for high heat applications
Maximum working temperature 450-550°C
Does not lend itself to conventional machining (hard and brittle)
High residual induction and energy product compared to ceramic material
Low coercive force compared to ceramic and rare earth materials (more subject to demagnetization)
Most common grades of alnico are 5 and 8
Not suited for repelling or high friction applications


Magnetic Properties Of Alnico Magnet

Grade

Equivalent MMPA Class

Remanence
Intrinsic
Coercivity

Coercivity

Maximum Energy Product
Density
Reversible Temp. Coefficient

Curie Temp.

Temp.Coefficient

Remark
BrHcjHcb(BH)maxg/cm3α(Br)TCTW
mTGsKA/mOeKA/mOeKJ/m3MGOe%/℃
FLN8Alnico3520520043540405008-101.0-1.256.8-0.02760450
Isotropic
FLNG12Alnico27007000435404050012-141.5-1.757-0.014810450
FLNGT18Alnico86006000107135095120018-222.25-2.757.2-0.02850550
FLNGT28Alnico6100010000577105670028-303.5-3.87.2-0.02850525
Anisotropic
FLNG34Alnico5110011000516405063034-383.5-4.157.2-0.016890525
FLNGT31Alnico878078001061130104130033-363.9-4.57.2-0.02850550
FLNGT3880080001261580123155038-424.75-5.37.2-0.02850550
FLNGT4288088001221530120150042-485.3-6.07.25-0.02850550
FLNGT33JAlnico8HC68068001511885140175033~364.1-4.57.2-0.02850550
FLNGT40J80080001561950144180043~475.4~5.97.2-0.02850550

Physical Properties


Parameter Name

Value

Cruie Temperature

760 ~ 890

Max. Operatin Temperature

450 ~ 550

Resistivity

47 ~ 54 μ Ω.cm

Hardness

520 ~ 630 HV

Density

6.9 ~ 7.3 g/cm³

Relative Recoil Permeablility

1.7 ~ 4.7 μrec

Saturation Field Strength

2.7 ~ 6.3 kOe / 215~500 kA/m

Temperature Coefficient of Br

-0.025 ~ -0.02%/

Temperature Coefficient of iHc

+0.01 ~ +0.03 %/


Manufacturing Process

Mixing

Melting

Casting

Coarse processing

Heat treatment

Finish processing

Magnetization


Applications of Alnico Magnets - Separators, sensors, electron tubes, traveling wave tubes, radar, holding magnets,

coin acceptors, clutches and bearings, auto ignition magnetos, motors, distributors, relays,,controls, generators,

receivers, telephones, bell ringers,microphones, guitar pickups, loudspeakers, security systems, cow magnets.


Regarding of magnetic properties of Alnico Magnet, Please click here.

For your different application,different grade/series for your choice

Quality ISO Strong Power Alnico 8 Pickup Magnet 5mm Custom Bar Magnets for sale
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