AlNiCo Permanent Magnet Manufacturer China Rare Earth Magnet Limited

Looking for High Temperature Rare Earth Permanent Magnets:
We need high temperature magnets with these properties:
Total length of magnets = *** cm
Inside diameter of magnets = *** cm
Minimum strength of magnets = 500 gauss at a distance of 2 mm from the magnet surface (approximate)
Temperature = 400-500℃
The magnets shown below are good except they are low temperature – we need to reach 400-500℃.

 
AlNiCo Magnets Manufacturer China Rare Earth Magnet Limited:
The magnets in your attached photo looks like Nickel coated sintered neodymium permanent magnets .
The maximum working temperature of sintered neodymium is up to 200℃.
If you are looking for high temperature magnets can withstand 400~500℃, Alnico magnets will be the only option.
However, Alnico material is much weaker than neodymium iron boron.
We are not sure whether they can meet your requirements in magnetic strength.
Please provide detailed dimensions of the arc magnets. Thanks
Outer Radius
Inner Radius
Angle
Length
 
Looking for AlNiCo Rare Earth Magnets:
The measurements are in attachment.

High Temperature Magnets Manufacturer China Rare Earth Magnet Limited:
We quote in attachment based on Alnico magnets
The maximum working temperature of Alnico magnetic materials is up to 500℃.
But please be informed Alnico is weak magnet, not strong as neodymium magnet.

AlNiCo Permanent Magnet Order:
I am ready to order:
Alnico5 Across Radius 50% N-S 50% S-N
Please let me know how to complete the order.