Rectangle Sintered Neodymium Magnet used in mobile phone

Product: Rectangle Sintered Neodymium Magnet used in mobile phone key words: mobile phone spare part ;  n52 neodymium magnet ; small ring NdFeB magnet Material: Sintered Neodymium Magnet ; Grade available: N35-N52,35M-50M,33H-48H,33SH-45SH,30UH-40UH,28EH-38EH, Coating: Ni(NiCuNi), Zn, Gold, Copper, Epoxy and so on;
Shape: Block,Ring,Disc,Cylinder,Arc(Segment),Half Ring, and some Special shapes;   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

Physical and mechanical properties

Comparison of physical 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

  Our main products are:
1,Metal injection molding, made from the stainless steel, tungsten, Iron-base alloy, tool steel, hard metal alloy.
2,Rare earth magnet, including sintered Neodymium-Iron-Boron, bonded Neodymium-Iron-Boron, sintered Samarium-Cobalt. All magnets are supplied in a wide range of shapes such as: rectangular blocks, discs, rings and segments.
3,Ferrite magnet: Hard ferrite magnet and soft ferrite magnet including the MnZn and NiZn.
4,Die-cast component, made from zinc, aluminum, magnesium alloys.

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 number naming method .         ♣ Please do not hesitate to contact us with the following infomation if you have intention of purchasing,thanks 1.Drawings or samples (offering both will be preferred). 2.Purchasing quantity. 3.Other requirements.