Solid Steel Alloy for DC application?

[TheMotorGuy]

Hi all:

I need a steel material for a DC application, thus saturation level is all I care about. After reading several threads I came to the conclusion that nickle-iron is first choice if cost is not taken into account. Pure-iron seems a good choice too. However nickle-iron steels I could find on cartech's site all have a lamination thickness in the catalog. I would presume a solid pure-iron core is possible. I am wondering if I can actually get a solid nickle-iron core.

We are talking about a solid C-core with 100mm*100mm*50mm dimension. Quite large, I know

I am new to alloy materiel. Any help you guys send my way will be much appreciated.

 

[TheMotorGuy]

Sorry a typo. Should be cobalt-iron like Hiperco® Alloy 27 rather than nickle.

 

[MagBen]

Cartech supplies Hperco 27 and Hyperco 50A BAR product. They also make pure iron (electrical iron) bar form. The key issue is your quantity.

 

[dgallup]

Vacuumschmelze is another iron-cobalt manufacture:

http://www.vacuumschmelze.com/en/research-innovation/materials-design.html

There are several other electrical iron manufactures like CMI but if you are just looking for peak flux density there is little point in going with the ultra low carbon products. The pure irons will get you low Hc but the difference in Bsat between them and 1006 is nearly nil.

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[TheMotorGuy]

@MagBen Thanks for the information. Could you elaborate on "key issue is quantity"? I intended to get 4 bars and manufacture a c-core.

@dgallup I will have DC in c-core, the m.m.f. drop will be in the air gap anyway regardless of core permeability (as long as it is much larger than vacuum, which seems not a problem for any steel). So yeah, Bsat is the main quality I am looking for. Thanks for the recommendation. So generally, does is sound feasible that I purchase electrical steel bars with dimensions mentioned above, send them to workshop and manufacture a C-core?

 

[MagBen]

Couple of pcs are only a very samll amount of material, no idea if Cartech is willing to sell

 

[EdStainless]

As dgallup said, in straight DC (no residual field concerns) you had might as well go with a low C steel. 1002-1006 in the annealed condition will get you very close.
We used to build large electromagnet yokes out of 1002 and then use CoFe for tapered pol pieces.

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