[TheForge] Metallurgy and Powder Coating

[Andrew Vida]

You NEVER ever powder coat aluminum SCUBA tanks for those precise 
reasons.  I have heard several third-hand accounts of this happening. 
Ignorance can be very dangerous.

Ron Childers wrote:
> Craig,
> 
> A friend of mine, a famous cave diver, had a fancy paint job done on his
> aluminum scuba cylinders and it was baked on. The heat apparently
> weakened the metal to the extent it exploded during the first fill
> causing serious injury and the schrapnal wreaked havoc with the dive
> shop. I don't know the baking heat or the alloy of the cylinder, but it
> did weaken it. You might consider anodizing if you want a pretty color.
> Ron C
> 
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Craig Schaefer
> Sent: Friday, May 27, 2011 11:41 PM
> To: Blacksmithing List Sponsored by ABANA
> Subject: [TheForge] Metallurgy and Powder Coating
> 
> I have some aluminum alloy motorcycle brake calipers and wheels that I'd
> 
> like to powder coat.   Would I weaken the aluminum by the heating
> process to 
> the 400-500 degree range?
> I know others offer the service, but that doesn't mean it's a good idea.
> 
> CraigS
> Gresham, OR 
> 
> 
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