Name of product: permanent sintered ndfeb magnet button,cheap neodymium button magnet for sale
Coating:zinc,nickel,copper,silver ,aurum etc.
Shape:arc, bar, ball, block, cylinder,coil,cube,sheet,stick, strip , ring, rod, etc.
Advantages:reasonable price and qualified quality, professional and first-class service.
Certifications: ISO9001/14000, GB/T28001 and TS-16949, ROHS.
We are professional and experienced in manufacturing and exporting various kinds of magnets.
♣ Please do not hesitate to us with the following information if you have intention of purchasing,thanks
1.Magnet property such as the Br, Hci, Hcb, BHmax2.Magnetization direction 3.Package requirements4.Quantity (monthly or annual demand)
5.Drawing with dimensions and tolerances,material,surface treatment requirements,etc.
The table below compares the magnetic performance of neodymium magnets with other types of permanent magnets.
Magnet | Mr (T) | Hci (kA/m) | BHmax (kJ/m3) | TC (°C) |
Nd2Fe14B (sintered) | 1.0–1.4 | 750–2000 | 200–440 | 310–400 |
Nd2Fe14B (bonded) | 0.6–0.7 | 600–1200 | 60–100 | 310–400 |
SmCo5 (sintered) | 0.8–1.1 | 600–2000 | 120–200 | 720 |
Sm(Co, Fe, Cu, Zr)7 (sintered) | 0.9–1.15 | 450–1300 | 150–240 | 800 |
Alnico (sintered) | 0.6–1.4 | 275 | 10–88 | 700–860 |
Sr-ferrite (sintered) | 0.2–0.4 | 100–300 | 10–40 | 450 |
sical and mechanical properties
Comparison of sical properties of sintered neodymium and Sm-Co magnets | ||
Property | Neodymium | Sm-Co |
Remanence (T) | 1–1.3 | 0.82–1.16 |
Coercivity (MA/m) | 0.875–1.99 | 0.493–1.59 |
Permeability | 1.05 | 1.05 |
Temperature coefficient of remanence (%/K) | –0.12 | –0.03 |
Temperature coefficient of coercivity (%/K) | –0.55..–0.65 | –0.15..–0.30 |
Curie temperature (°C) | 320 | 800 |
Density (g/cm3) | 7.3–7.5 | 8.2–8.4 |
CTE, magnetizing direction (1/K) | 5.2×10–6 | 5.2×10–6 |
CTE, normal to magnetizing direction (1/K) | –0.8×10–6 | 11×10–6 |
Flexural strength (N/mm2) | 250 | 150 |
Compressive strength (N/mm2) | 1100 | 800 |
Tensile strength (N/mm2) | 75 | 35 |
Vickers hardness (HV) | 550–650 | 500–550 |
Electrical resistivity (Ω·cm) | (110–170)×10–6 | 86×10–6 |
Sintered NdFeB Magnet Characteristics:
Our main products list
01 Metal Injection Molding > Stainless steel: SUS316L,SUS304L,SUS440C,SUS630,17-4 > Tungsten alloy: WNiFe,WuNiCu > Iron-base alloy: > Hard metal alloy: WC > Tool steel : M2,42CrMo4 > Soft magnet02 Powder Compaction Molding > Copper alloy > Iron alloy > Hard metal alloy 03 Bonded NdFeB Magnet04 Sintered NdFeB Magnet05 Ferrite > Sintered Hard Ferrite > Soft Ferrite-MnZn ferrite > Soft Ferrite-NiZn ferrite > Rubber Ferrite06 others > SmCo > Cast and Sintered AlNiCo > Die Casting
Other quality management SPC dada statistics., Advanced inspection equipments, Staff education, APQP FMEA , PPAP , SPC , MSA , 6 sigma , MIL-STD M105E Standard Ac=0 Sampling Method ( Zero Defect Plan ) , Traceable lot naming method .
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