1002 Steel vs 1026 steel in magnetics

Question

1002 Steel vs 1026 steel in magnetics

cesaredu13 (Electrical)

(OP)

14 Aug 08 20:34

Hello everyone,

as far as i know 1002 steel has a better performance in magnetics because it has less carbon than steel 1026, does somebody knows if there will ba a great difference using steel 1002 in a yoke used to atract an armature than using the 1026 steel.
The only think that matters in the yoke-armature design is the initial FORCE needed to atract the armature to the yoke, i do not care abaout the force ones is attracted .

Do you think 1002 steel will differ a lot from 1026 regarding the pulling force created by the yoke on the armature.

Thanks in advanced.

MJR2 (Mechanical) · Answer 1 · 2008-08-15 08:27:54

Both of these steels are somewhat unusual grades. You will need to analyze your circuit using FEA and the B-H curves for the material. There will likely be a measurable difference that may be insignificant to you.

Mike

sreid (Electrical) · Answer 2 · 2008-08-15 09:48:56

In general, you won't see a difference between the two materials. The higher carbon primarily affects the flux level where saturation occurs and since you have an air gap to start with it's unlikely you'll have enough amp-turs to come close to saturaton.

MagMike (Materials) · Answer 3 · 2008-08-15 10:39:55

Lot-to-lot variations within the same material will be larger than any differences you'll see between 1002 and 1026. Unless you are specifying the chemical composition and the heat treatment, one batch of 1002 (or 1026) will behave very differently than next month's batch.

It's been mentioned in this forum numerous times, these grades of materials are not often processed to specific material properties.

MagMike (Materials) · Answer 4 · 2008-08-15 13:20:06

Oops, I should have said "processed to specific magnetic properties"

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1002 Steel vs 1026 steel in magnetics