metal bracket on hard drive magnets ?

any one know what that bracket is made from. it seems to be a strong anti magnet metal of some kind.

neodynium a rare earth metal from what I hear.

The magnet itself is neodymium, the bracket is Permalloy.

Because NdFeB magnets corrode in air fairly quickly, nickel is electroplated onto the magnet and bracket.
These magnets are quite powerful, almost dangerous if they are strong enough. This poses a threat to computers, seeing as most data is magnetically sensitive (at least to some degree). To combat this problem, computer engineers make the magnet’s brackets out of an IRON, NICKEL and MOLYBDENUM based alloy called a permalloy! Permalloy has an extremely high magnetic permittivity, meaning it will stop most magnetic fields.

I got this from The Irrationalist's web blog.

I have a bunch of these. Do local yards usually buy them or do they need to be shipped to an escrap buyer?

E-bay them

Originally Posted by parrothead

E-bay them

How do you ship them? These things are strong. Pack a box full and it will be stuck to the delivery truck.

I have 20 or so pairs that are 1/2" thick magnet attached to a 1/3" thick casting (where the plate would be in a smaller version). Get a finger between two of them and you will be hurtin' for certain. Set a shipping box with those babies on a metal cart and you may have to ship the cart too!

Bill

Most yards do not currently set a price at the metals true value, many will not recognise it. There are specialist buyers however who will simply reuse the alloy its it's permalloy form. Because of this, theya re able to give the highest prices. If you can find these buyers and have the quantities to suit their needs, it currently holds a value of around $7 lb.

You are correct they are very strong magnets. But the distance at which they stick to metal isnt very big. Try it once yourself. Try sticking something metal to the backside of the magnet while its still on the bracket. It wont stick. Now if you have a box full they tend to stick to each other magnet side to magnet side and usualy once in the box nothing really sticks to the box. Thats been my experience anyway.

Originally Posted by PartTimeScrapper

You are correct they are very strong magnets. But the distance at which they stick to metal isnt very big. Try it once yourself. Try sticking something metal to the backside of the magnet while its still on the bracket. It wont stick. Now if you have a box full they tend to stick to each other magnet side to magnet side and usualy once in the box nothing really sticks to the box. Thats been my experience anyway.

The metal bracket actually stops the magnetic waves from passing through it. Take that same magnet off the bracket and then try and stick something to the back of the magnet...

So where is the scrap value; the magnet or the bracket? I would think the nickel in the bracket would be what would draw a buyer. That would mean a better price for the bracket alone. Of course that leaves the unshielded magnet to contend with. Hmmm ...

Well then what I said is right a box full of them wont stick to the delivery truck.

Originally Posted by mrbillbus

So where is the scrap value; the magnet or the bracket? I would think the nickel in the bracket would be what would draw a buyer. That would mean a better price for the bracket alone. Of course that leaves the unshielded magnet to contend with. Hmmm ...

Both have value, the permalloy if you can get enough of it and the magnets sell well on ebay. I used to buy them myself 'till I realised Icould get much bigger stronger magnets for free. Only problem is loads of other people know as well now as their prices have dropped a lot and there's more for sale.

your not wrong about price slump, good 'ole China with its bargain prices, pooping on regular folk trying to make a dollar!

http://www.ebay.com.au/sch/i.html?_t...4&_sop=3&_sc=1

Well, how do you get said magnets off the bracket? Without destroyin the bracket or magnet, of course.

Originally Posted by TheHoss

Well, how do you get said magnets off the bracket? Without destroyin the bracket or magnet, of course.

The magnet is I think is simply glued to the bracket. So I take two pairs of pliers, hold the bracket with one and with the other I try to bend it. As soon as it bends a little, the magnet can be removed easily.

I do it this way because I don't have a vice. I think with a vice it's even easier.

Originally Posted by PartTimeScrapper

Well then what I said is right a box full of them wont stick to the delivery truck.

HAHA... I guess it's a matter of how you organize the parts inside the box.