Price comparison of NdFeB, SmCo, SrFe or BaFe

• Mar 16, 2012

• #2

MagMike

Materials

Jun 4, 2003

505

At the Magnetics 2012 Conference this week there was a panel discussion and one of the participants put up a slide with the following information:
Based on simple magnet block shape, loose tolerances:
Hard ferrite: $3 to $20 per kg
Alnico: $50 to $100 per kg
SmCo: $120 to $160 per kg
NdFeB: $180 and up per kg

 

Upvote 0 Downvote

• Mar 16, 2012

• Thread starter
• #3

Clyde38

Electrical

Oct 31, 2003

533

Hi MagMike,
Thanks for information. I was at this conference.

[link

http://www.linkedin.com/in/clydehancock

]

[/url]

 

Upvote 0 Downvote

• Mar 19, 2012

• #4

EdStainless

Materials

May 20, 2004

16,285

Mike, Nd more than SmCo??
Sm is still more than Nd in terms of raw material prices, and that doesn't even include the Co.

Out of curiosity who is left producing Alnico in the US?

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

 

Upvote 0 Downvote

• Mar 19, 2012

• Thread starter
• #5

Clyde38

Electrical

Oct 31, 2003

533

EdStainless,

Sm may be more expensive than Nd, but the additives such as Dy (Dysprosium) is off the chart.

[link

http://www.linkedin.com/in/clydehancock

]

[/url]

 

Upvote 0 Downvote

• Mar 19, 2012

• #6

MagMike

Materials

Jun 4, 2003

505

EdStainless:
Clyde nailed it. The cost for Dy shot up ten-fold last year. It is trending downward, but very slowly. Most NdFeB magnets contain some Dy. The higher the intrinsic coercivity, the higher the Dy content.

To my knowledge, there are only 3 US Alnico suppliers remaining:
Arnold
Thomas & Skinner
Permanent Magnet Company

-Mike

 

Upvote 0 Downvote

• Mar 19, 2012

• #7

EdStainless

Materials

May 20, 2004

16,285

Thanks, As a T&S alum I was interested.

I had forgotten about Dy, it also improves (reduces) the temp coef.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

 

Upvote 0 Downvote