INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Magnetic saturation B-H curve

Magnetic saturation B-H curve

(OP)
Good evening,
I have been using a software for a FEM simulation, but there is not present the materials which i need in the library of this software. Therefore, I have to add two non linear material in the library, but i need to know the B-H curve (B = magnetic induction, H = magnetic field strength). Where can i find these information for the following materials?
- AISI 430F (ASTM A 838 Alloy 2)
- AISI 420 (ASTM A 176)

RE: Magnetic saturation B-H curve

Go to Carpenter Technology data sheets, they are about your only hope.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

RE: Magnetic saturation B-H curve

According to the ASM Reference Book

ASTM A838/A838M Alloy 1 Grade 3 has a relative pereability of 600-1100, a coercivity of <557 A/m, and a saturation Ms of 1.0 T, obtail from bar (6.35mm<d<41.28mm) and ring test.

Hardly an electrical steel...wherer losses are an issue.

RE: Magnetic saturation B-H curve

I presume that these are for cores, hopefully near DC.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

RE: Magnetic saturation B-H curve

You can get generic 430 data in the FEMM material files. Carpenter will supply detailed data but first you must be a customer. I've never encountered data on 420. A good supplier like Carpenter can supply data on any material they produce and may even test material they don't produce if you ask really nicely.

----------------------------------------

The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

RE: Magnetic saturation B-H curve

Data for 420 is not readily available, since it was not designed as a magnetic grade, magnetic properties are not in control during manufacturing. Also, the mag properties vary a lot with conditions:
when applied an H field of 250 Oe, the following results could be obtained:
1. cold worked:
Bs = 16,500Gs, Br= 6,000Gs, Hc = 19 Oe
2. cold worked + annealed:
Bs = 18,000Gs, Br= 10,000Gs, Hc = 7 Oe
3. cold worked + hardened + tempered (450C):
Bs = 11,50000 Gs, Br= 7,000Gs, Hc = 65 Oe

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close