Is Brass Magnetic: Debunking the Myth

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Discussion Overview

The discussion centers on the magnetic properties of brass, specifically whether it is magnetic or not. Participants explore various claims regarding the ferromagnetic nature of brass and its separation from ferrous materials, as well as the existence of specific brass alloys that may exhibit slight magnetic properties.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Exploratory

Main Points Raised

  • Some participants reference conflicting sources regarding the magnetic properties of brass, with one source stating that brass is magnetic while others assert it is not.
  • A participant cites Wikipedia, which claims that brass is not ferromagnetic, leading to questions about the implications of this statement.
  • Concerns are raised about the apparent contradiction in the statement that brass can be separated from ferrous scrap using a magnet despite being non-ferromagnetic.
  • One participant suggests that the process of separation involves removing ferromagnetic materials, leaving behind non-ferromagnetic materials like brass.
  • Another participant introduces the idea that there exists a brass alloy containing 1-2% iron that exhibits slight magnetic properties, although it does not stick to a magnet strongly.
  • There is mention of other ferrous alloys, such as marine grade stainless steel, that may not be noticeably ferromagnetic.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the magnetic properties of brass. There are multiple competing views regarding the nature of brass and its alloys, as well as the implications of its non-ferromagnetic status.

Contextual Notes

Some statements rely on specific definitions of magnetism and ferromagnetism, and the discussion includes assumptions about the behavior of brass in the presence of magnetic fields. The nuances of different brass alloys and their compositions are also acknowledged but not fully resolved.

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"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??
 
iknownth said:
"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.
 
sophiecentaur said:
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.
 
iknownth said:
"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.
 
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.
 
fleebell said:
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.
 

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