Looking for BH curve for A-36 steel

larsencg · Oct 5, 2006

Hi folks,
I'm looking a BH curve for A-36 steel (hot rolled). We're making a 'test transformer' out of it with one edge replaceable with other materials. Just for some 'order of magnitude' testing of tungsten/carbides. I'd just like some other data to compare our little test rig to.

For that matter, if anyone has BH data for tungsten/carbide (10%cobalt), that would be nice to see too!

Thanks,
Chris

MagMike · Oct 5, 2006

A-36 steel is a pretty wide specification. The supplier is allowed a wide range on the composition, so you'll get all sorts of magnetic variation from lot to lot. Because of this it's not really practical to get an accurate BH curve for it.

However, if you just need an order of magnitude estimation, you'll be safe enough using 1010-1018 cold rolled steel.

Regarding your request for BH data on tungsten/carbide, I can't help you there. I've never run across that one. Hopefully someone else in this forum can help.

EdStainless · Oct 6, 2006

Are your carbide grades ferromagnetic at all? They only magnetic part is the Co binder.

= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection

http://www.trent-tube.com/contact/Tech_Assist.cfm

larsencg · Oct 6, 2006

Thanks, MagMike. 1018 data should be good enough.

The carbide is slightly ferromagnetic. I understand that without the Co it would be non-magnetic.

MJR2 · Oct 6, 2006

The one piece of A36 I tested had specs at 0.16% C and the curve was similar to 1018. But as stated A-36 can be just about anything they want to melt. And magnetically it could be off quite a bit. I wouldn't bet on it being like 1010 or even 1018 if really mattered.

Mike

lgearhart · Oct 9, 2006

Battelle did some work on fracture propagation control of pipelines, and as part of that decided they needed to know the magnetic properties of pipeline steels. Take a look at

http://www.battelle.org/pipetechnology/DOTReport/links_direct/MaterialDatabase.htm

It may be suitable for your needs.

MagMike · Oct 9, 2006

Hello lgearhart,

That's very interesting data, thanks for the link.

Do you know why the the remanence for material 24-06 is listed as 12,130 Gauss, when it is clear that the BH curve crosses below 10,000?

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Looking for BH curve for A-36 steel

larsencg

Mechanical

MagMike

Materials

EdStainless

Materials

larsencg

Mechanical

MJR2

Mechanical

lgearhart

Materials

MagMike

Materials

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