SIGforum
Do magnets wear out?
June 05, 2017, 01:46 PM
AeteoclesDo magnets wear out?
From a quick google search, it appears that magnets wear out over a long period of time--something like 700 year half life.
But, do magnets wear out from use? For instance, will repetitively sticking magnets to one another wear them out?
June 05, 2017, 02:00 PM
BurtonRWquote:
Originally posted by Aeteocles:
But, do magnets wear out from use? For instance, will repetitively sticking magnets to one another wear them out?
Why don't you try it and let us know.
I predict that there will be many suggestions and statements about the law made here, and some of them will be spectacularly wrong. - jhe888
A=A June 05, 2017, 02:02 PM
P220 SmudgeIf you force together magnets of the same polarity, yes you can de-gauss them from a strong charge down to almost nothing. I was just doing this at work before lunch. And yes, sticking together magnets with the opposite poles touching can transfer gauss from one to another, generally evening out.
If you want, I can do a test with some Alnico 5 bar magnets and measure the result with a gauss meter. Because I have one.
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June 05, 2017, 02:30 PM
AeteoclesSo, using a magnet in place of a spring probably wouldn't work in the long run?
June 05, 2017, 02:35 PM
P220 SmudgeDepends on all the variables, lol. What are you trying to do?
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"If the truth shall kill them, let them die.”
Endeavoring to master the subtle art of the grapefruit spoon.
June 05, 2017, 02:48 PM
LS1 GTOquote:
Originally posted by Aeteocles:
So, using a magnet in place of a spring probably wouldn't work in the long run?
They'll last 36,000 miles or 36 months - whichever comes first.
Life moves pretty fast. If you don't stop and look around once in a while, you could miss it.
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The definition of the words we used, carry a meaning of their own...
June 05, 2017, 02:49 PM
HRKquote:
Do magnets wear out?
Well when stuck together over time they have been known to lose their attraction
June 05, 2017, 02:56 PM
guardianangel762Yes faster than 700 years.
Cabinets' use magnets and they stop holding the door shut after 10 years or so.
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But then of course I might be a 13 year old girl who reads alot of gun magazines, so feel free to disregard anything I post.
June 05, 2017, 04:21 PM
rburgquote:
Originally posted by Aeteocles:
So, using a magnet in place of a spring probably wouldn't work in the long run?
In the long run, we'll all be dead.
Unhappy ammo seeker
June 05, 2017, 04:24 PM
Aeteoclesquote:
Originally posted by guardianangel762:
Yes faster than 700 years.
Cabinets' use magnets and they stop holding the door shut after 10 years or so.
Good point of reference. Thanks!
June 05, 2017, 04:30 PM
FredwardThis is a very interesting thread. Thanks folks!
June 05, 2017, 04:43 PM
Pipe SmokerI'll just comment that the newer rare earth magnets retain their magnetism far better than the older ALNICO magnets. They're very stable.
Serious about crackers. June 05, 2017, 06:36 PM
Bisleyblackhawkquote:
Originally posted by HRK:
quote:
Do magnets wear out?
Well when stuck together over time they have been known to lose their attraction
Especially after you throw a bucket of water on them!
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June 05, 2017, 06:47 PM
egregoreRepeated hard blows or vibration can damage a magnet. Many cars use a magnetized wheel bearing as an ABS wheel speed sensor. When installing one they must never be hammered in, only pressed.
June 05, 2017, 06:51 PM
jbcummingsquote:
Originally posted by guardianangel762:
Yes faster than 700 years.
Cabinets' use magnets and they stop holding the door shut after 10 years or so.
Are those really magnets or are they little pieces of magnetize metal? I'd think there would be a difference.
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June 06, 2017, 08:23 AM
honestlouquote:
I am now very thankful that I've never watched Bill Nye. And I won't make that mistake again.
June 06, 2017, 09:19 AM
jhe888quote:
Originally posted by jbcummings:
little pieces of magnetize metal
That is what a magnet is.
The fish is mute, expressionless. The fish doesn't think because the fish knows everything. June 06, 2017, 01:47 PM
Prestokedquote:
Originally posted by guardianangel762:
Yes faster than 700 years.
Cabinets' use magnets and they stop holding the door shut after 10 years or so.
Mine on my kitchen cabinet doors have been working fine without any sign of weakening for 56 years.
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