Magnetic bronze

Magnetic bronze

This topic has 5 replies, 4 voices, and was last updated 30 September 2022 at 19:56 by roy entwistle.

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30 September 2022 at 14:04 #615565
Garry Coles
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@garrycoles69390
Hi. Many years ago I obtained two 12 in X 1 in diameter bronze looking round bar. I didn't know what sort of bronze it was, so it was not going to be used on any thing important. I thought it would come in handy for something one day. And today it did. I am machining up some pipe flanges for a globe valve. The bar machines very nicely. Now, when I was cleaning the lathe afterwards I noticed that a magnet that I had close by had some of the bronze on it. On closer inspection I found it to be only very slightly magnetic. Can someone enlighten me as to what this sort of bronze is.

Thanks

Garry
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30 September 2022 at 14:04 #28857
Garry Coles
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@garrycoles69390
30 September 2022 at 14:39 #615572
Michael Gilligan
Participant
@michaelgilligan61133
Garry

Search here **LINK** for magnetic bronze and all should be revealed

https://copper.org/search.php?q=&submit=Search

MichaelG.

.

”Thus, for example all alloys up to 80% Ni are paramagnetic at 150 ºC while at 20 ºC alloys containing more than 68.5% nickel exhibit ferromagnetic behaviour.”

Edited By Michael Gilligan on 30/09/2022 14:41:17
30 September 2022 at 14:51 #615575
SillyOldDuffer
Moderator
@sillyoldduffer
If it's magnetic, and not exotic, probably a Bronze with Iron, Nickel or Cobalt in it. Could be CA104 ; it's an Aluminium Bronze containing about 5% Iron and 5% Nickel.

Good stuff judging by the specification.

Dave
30 September 2022 at 15:59 #615579
Garry Coles
Participant
@garrycoles69390
Thanks. Never realised that the bronze family had so many variations.
30 September 2022 at 19:56 #615598
roy entwistle
Participant
@royentwistle24699
Seeing that it's an alloy of copper, anything can be added to it, not necessarily other metals.
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