Register to reply

Is brass magnetic?

by iknownth
Tags: metal
Share this thread:
iknownth
#1
Jan17-13, 11:13 PM
P: 16
The website http://www.ehow.com/how_6365159_tell...old-brass.html mentions that brass is magnetic but here http://uk.answers.yahoo.com/question...2044233AA5QE4b many say brass is not magnetic. So, is brass magnetic?
Phys.Org News Partner Chemistry news on Phys.org
Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices
Rubber meets the road with new ORNL carbon, battery technologies
Breaking benzene
jedishrfu
#2
Jan17-13, 11:19 PM
P: 2,982
and wikipedia says: no its not ferromagnetic

http://en.wikipedia.org/wiki/brass

http://en.wikipedia.org/wiki/Ferromagnetism
iknownth
#3
Jan18-13, 01:50 AM
P: 16
"Because brass is not ferromagnetic, it can be separated from ferrous scrap by passing the scrap near a powerful magnet."
This sentence seems contradictory.
Not ferromagnetic but can be separated near a magnet?? What does it mean??

sophiecentaur
#4
Jan18-13, 04:36 AM
Sci Advisor
Thanks
PF Gold
sophiecentaur's Avatar
P: 12,161
Is brass magnetic?

Quote Quote by iknownth View Post
"Because brass is not ferromagnetic, it can be separated from ferrous scrap by passing the scrap near a powerful magnet."
This sentence seems contradictory.
Not ferromagnetic but can be separated near a magnet?? What does it mean??
You remove the ferromagnetic and you're left with the brass? Plus the gold, aluminium, tin etc. of course, which gives you a different problem.
Borek
#5
Jan18-13, 05:09 AM
Admin
Borek's Avatar
P: 23,574
Quote Quote by sophiecentaur View Post
You remove the ferromagnetic and you're left with the brass? Plus the gold, aluminium, tin etc. of course, which gives you a different problem.
I'll take the gold, so you have one problem less.
Drakkith
#6
Jan18-13, 12:48 PM
Mentor
Drakkith's Avatar
P: 11,873
Quote Quote by iknownth View Post
"Because brass is not ferromagnetic, it can be separated from ferrous scrap by passing the scrap near a powerful magnet."
This sentence seems contradictory.
Not ferromagnetic but can be separated near a magnet?? What does it mean??
The ferromagnetic material is picked up by the magnet, leaving the non ferromagnetic material behind.
fleebell
#7
Jan20-13, 05:35 PM
P: 26
There is a brass alloy that is slightly magnetic. It has 1-2% of iron in it. It used to be used quite often for coating ships bottoms to prevent critters from attaching themselves. As far as I know it's not used anymore.

It won't really stick to a magnet though other than with a real slight attraction. I.E. you can't pick a piece of it up with a magnet. You can hang a small piece of it from a thread and move a good magnet close to it and see movement from it due to the magnetic field but it's very small amount of movement.
sophiecentaur
#8
Jan20-13, 05:47 PM
Sci Advisor
Thanks
PF Gold
sophiecentaur's Avatar
P: 12,161
Quote Quote by fleebell View Post
There is a brass alloy that is slightly magnetic. It has 1-2% of iron in it. It used to be used quite often for coating ships bottoms to prevent critters from attaching themselves. As far as I know it's not used anymore.

It won't really stick to a magnet though other than with a real slight attraction. I.E. you can't pick a piece of it up with a magnet. You can hang a small piece of it from a thread and move a good magnet close to it and see movement from it due to the magnetic field but it's very small amount of movement.
And there are ferrous alloys that aren't noticeably ferromagnetic either. Marine grade stainless steel is a good (and expensive) example.


Register to reply

Related Discussions
Help with brass production Materials & Chemical Engineering 5
Brass and Corrosion! Biology, Chemistry & Other Homework 1
Making brass & brass sheet Materials & Chemical Engineering 7
Brass discoloration Materials & Chemical Engineering 3
Electroplating Brass Chemistry 2