N35H - N48H Sintered NdFeB / Neodymium Block Magnets with Counter Sunk Holes

counter sunk hole NdFeB magnet

Property: 40SH

Br>=1.26T, Hcb ≥859kA/m, Hcj≥1592kA/m, (BH)max>=38MGOe

Coating: Ni

Magnetization: axially magnetized or not magnetized

Tolerance: all ±0.1mm

Max working temperature: 150°C

Curie temperature: 310 to 340°C

Packing: packed in plastic bags, then put in cartons

Delivery time: 10 days

Density: 7.5 to 7.6g/cm³

Br temperature coefficient: -0.09 to -0.12%/°C

IHc temperature coefficient: -0.58 to -0.6%/°C

Coating test: salt spray test, PCT test, coating thickness, and more

Qualification standard: AQL = 0.65

Payment term: L/C at sight or T/T in advance

Certification: RoHS certification, ISO9001

Saturation recoil strength: 2.4-3.2kA/m

Tensile strength: 8.0kg/mm²

Specific heat: 0.12kCal/(kg, °C)

Young?s modulus: 1.6 x 1,011N/m²

Poisson?s ratio: 0.24

Electrical resistivity: 114μΩ/cm

Flexural strength: 25kg/mm

Coefficient of thermal expansion: 4 x 10-6/°C

Rigidity: 0.64N/m²

Vickers hardness: 600Hv

Compressibility: 9.8 x 10-12m²/N

Relative recoil permeability: 1.05

Thermal conductivity: 7.7kCal/(m.h. °C)

Magnet application :

Our company has been involved in the R&D, manufacturing and sales of permanent magnets since 

1980s.We are a supplier of rare earth permanent magnetic products such as neodymium magnets,

 and other non-rare earth permanent magnets.

We have provided various customers in different fields, such as NMR (Nuclear Magnetic 

Resonance), loud speaker, wind turbine and mechanical device. 

We supply rare earth permanent magnetic materials in powder, sintered form, as well as polymer

bonded form. We also supply other permanent magnet materials including alnico, ceramic (ferrite) 

and flexible magnet materials. We specialize in manufacturing permanent magnets according to

customers' requirements in terms of compositions, magnetic characteristics, shapes, and sizes.