Heat treat for electrical applications
Heat treat for electrical applications
(OP)
I am working on an electromagnetic application and will be testing some parts that I made out of Alloy 50 and 12L14.
I found a heat treatment schedule from Carpenter for the Alloy 50:
"Anneal parts at 1300/1600 °F for 2-4 hours in dry hydrogen or vacuum and cool at 150/350°F per hour until 600°F is reached, after which any cooling rate can be employed"
Does anyone know the heat treatment for 12L15 that would produce soft magnetic properties?
Thanks!
I found a heat treatment schedule from Carpenter for the Alloy 50:
"Anneal parts at 1300/1600 °F for 2-4 hours in dry hydrogen or vacuum and cool at 150/350°F per hour until 600°F is reached, after which any cooling rate can be employed"
Does anyone know the heat treatment for 12L15 that would produce soft magnetic properties?
Thanks!





RE: Heat treat for electrical applications
RE: Heat treat for electrical applications
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Plymouth Tube
RE: Heat treat for electrical applications
Thanks!
RE: Heat treat for electrical applications
RE: Heat treat for electrical applications
You may get nice saturation out of your 12L15 but don't expect good perm numbers.
In order to get perm in iron you need it clean. We used to anneal overnight in hydrogen at 2650F in order to lower the the C, S, and O. We started with Armco A and then when it wasn't available we went to 1001/1002.
Your 1600F for 4 hours in hydrogen is a good start and will probably give you all that you can expect our of 1215.
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Plymouth Tube
RE: Heat treat for electrical applications
Alloy 49 with 48% Ni has the following heat treat:
"For maximum softness and optimum magnetic and electrical properties, Carpenter High Permeability "49" alloy should be annealed in an oxygen-free, dry hydrogen atmosphere with a dew point below -40°F (-40°C) for 2 to 4 hours at 2150°F (1177°C), followed by a furnace cool at a rate of 100/200°F (38/93°C) per hour down to 800°F (427°C) and at any rate thereafter"
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