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Help, i need to know what the reletive permeability is of a few materials (listed below) but i can not find the data on the internet. Does annybody know the data or where i can find it?

-s235jr

-s355jr

-s690ql

-hardox 450

-abramax 420 cr

I hope that someone can help me with this problem.

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  • $\begingroup$ Rarely is the permeability of a structural steel relevant to much of anything. If you need to screen magnetic fields use mu-metal instead. $\endgroup$
    – Jon Custer
    Commented May 16 at 15:40
  • $\begingroup$ It is for a electromagnet, and to make the whole magnet from mu-metal would be quite expensive and difficult to make. $\endgroup$
    – laurent
    Commented May 17 at 6:19
  • $\begingroup$ ROger that. Mu metal would be a disaster then. IT would seem you would drive the structure to saturation fairly easily for a large electromagnet. $\endgroup$
    – Jon Custer
    Commented May 17 at 13:15
  • $\begingroup$ That is true, but i will be using alluminium windings because of the weight, and a large length of the core makes the saturation the magnetic flux density less. $\endgroup$
    – laurent
    Commented May 21 at 6:05

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