normalisation annealing 304 stainless steel

[edgedislocation]

does anyone know the 304 stainless steels normalization annealing temperature and annealing tine for a wire about 12 micron

 

[EdStainless]

What are you trying to achieve? Strain relief? what about grain growth? How heavily cold worked is the wire?
There is probably no reason to go hotter than 1800F, 1750F may even be enough. The time will be just enough to get the material to temp.,seconds not minutes.

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[Yallapragada1022]

ASM Heat Treater's guide recommends using a minimum annealing temperature of 1905 deg.F. The range is 1850 to 2050 deg.F.

Again, just like EdStanless asked above, What are you trying to accomplish?

Rao Yallapragada

 

[kenvlach]

Is this a short piece or a long coil?

Electric resistance heating is the easiest way if you lack furnaces. Not real precise on temperature, though. To protect the surface from oxidation, do under argon inside a quartz glass tube. I've also done a similar annealing in a tube furnace under flowing hydrogen that burned off as it exited one, necked-down end.

 

[EdStainless]

Ken, you would have liked our furnace. A small lab tube furnace (36" hot zone) turned on end with the tube (2" od) vertical. The top end was capped with a 1/8" hole in it, the bottom end was open. The top end was about 3' above the hot zone. Hydrogen was fed in near the bottom, burned off at the top and there was a 5 gal pail of water under the tube. We would tie wire samples to very light wire (0.002") and adjust the length so that when we dropped them they would be in the middle of the hot zone. It took 3 people to run anneal tests. One to drop the sample, one to watch the clock, and one to cut the wire. We could repeat anneals at 3 sec.

= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection

http://www.trent-tube.com/contact/Tech_Assist.cfm