Have graphs, but need to pick material with lowest Remanence

[amdx]

I have put three graphs of
"Reverse Permeability as Function of Magnetic Field Strength"
in this link, > https://www.dropbox.com/s/5j91ujwyvigzzqh/Remanence.jpg?dl=0
I don't know what I'm looking at to pick the material with the lowest
Remanence,( B_r,) (residual magnetism).

Maybe this doesn't apply, other companies just have a number,
Example: B_r + 250mT

Thanks, for your help, Mikek

 

[Martin Riddle]

On Wed, 11 Sep 2019 15:55:42 -0500, amdx <nojunk@knology.net> wrote:

I have put three graphs of
"Reverse Permeability as Function of Magnetic Field Strength"
in this link, > https://www.dropbox.com/s/5j91ujwyvigzzqh/Remanence.jpg?dl=0
I don't know what I'm looking at to pick the material with the lowest
Remanence,( B_r,) (residual magnetism).

Maybe this doesn't apply, other companies just have a number,
Example: B_r + 250mT

Thanks, for your help, Mikek

4C65
I could be wrong.

Cheers

 

[amdx]

On 9/11/2019 6:04 PM, Martin Riddle wrote:

On Wed, 11 Sep 2019 15:55:42 -0500, amdx <nojunk@knology.net> wrote:

I have put three graphs of
"Reverse Permeability as Function of Magnetic Field Strength"
in this link, > https://www.dropbox.com/s/5j91ujwyvigzzqh/Remanence.jpg?dl=0
I don't know what I'm looking at to pick the material with the lowest
Remanence,( B_r,) (residual magnetism).

Maybe this doesn't apply, other companies just have a number,
Example: B_r + 250mT

Thanks, for your help, Mikek

4C65
I could be wrong.

Cheers

I appreciate you chipping in, but I can see the graph for 4c65 starts
lower, for whatever the units are on the Y axis. But I find these graphs
hard to relate back to the numbers, 250 to 400, I see for other materials.
I'm referring to the 2000" Ferroxcube soft ferrites data handbook,
it lists 52 materials and as best I can see, only 5 of those have the
B_r data shown.
I give Fair Rite credit for having a pretty good showing of there
material data. It takes a bit of use to understand, such as, the
material number is not listed, they expect you to decipher the part
number to know the material type. That's easy, once you know to do that.
And then click on the dropdowns, a lot of info in the dropdowns.
Ferroxcubes databook, 846 pages, and still not enough.

Mikek