In article ,
Huge wrote:
The moment the metal is exposed to the air, it forms a coat of oxide.

Not in practical terms. Aluminium takes hours or days to form an
appreciable oxide coat, and even then it's pretty negligible.

Damn. My 'A' level chemistry master was lying. I wonder why?

'Twas my understanding it oxidised very quickly which is why it's
difficult to weld or solder.

--
*A day without sunshine is like... night.

Dave Plowman London SW
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