Magnetisation Grade:         N38
Material: Neodymium-Iron-Boron (NdFeB), Neodymium and Steel 
Magnet ID:              NPC-40-N38-Ni
Plating / Coating: Nickel (Ni-Cu-Ni) / Double Ni    
Shape: Ring / with Countersunk (Countersink)   
Pot Magnet Size: 
Pot Total Diameter (D):        40 mm
Pot Total Height (H):         8 mm
Borehole Top (d1):         5.5 mm
Borehole Bottom (d2):        11.7 mm
Countersunk Depth (h):         3.1 mm
Tolerance:         ±0.1 mm
Magnetisation Direction:   Axial      
Residual Magnetic Flux Density (Br): 12.2-12.6 KGs (T):  1.22-1.26 T 
Energy Density (BH)max:              35-39 MGOe   279-310 KJ/m³   
Coercivity Force (Hcb):              ≥10.8 KOe  ≥860 KA/m   
Intrinsic Coercivity Force (Hcj):    ≥12 KOe    ≥955 KA/m   
Maximum Operation Temperature: 80 °C 
Delivery Time:           14-35 days   
Measurements:

Manufacture ISO standard countersunk hole ndfeb magnet   
Sintered NdFeB magnets are the most powerful commercialized permanent magnets available today, with maximum energy product ranging from 26 MGOe to 52 MGOe. Nd-Fe-B is the third generation of permanent magnet developed in the 1980s. It has a combination of very high remanence and coercivity, and comes with a wide range of grades, sizes and shapes. With its excellent magnetic characteristics, abundant raw material and relatively low prices, Nd-Fe-B offers more flexibility in designing of new or replace the traditional magnet materials such as ceramic, Alnico and Sm-Co to achieve high efficiency, low cost and more compact devices.
Advantages of sintered Magnet
*Extreme strong Br Resident induction.
*Excellent demagnetization resistance capability.
*Good Price relative to its high magnetic properties.