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Anyone know if Buono kettle bottom plate is 18/8 or 18/0 stainless steel?
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rmp71701
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Posted Tue Nov 12, 2013, 10:06am
Subject: Anyone know if Buono kettle bottom plate is 18/8 or 18/0 stainless steel?
 

Comparing the Buono to the Fino - saw that the Fino's bottom plate is not 18/8 like the body, but rather 18/0 (lesser quality).

Just wondering if the Buono is made in the same way.
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calblacksmith
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Posted Wed Nov 13, 2013, 3:27pm
Subject: Re: Anyone know if Buono kettle bottom plate is 18/8 or 18/0 stainless steel?
 

18-8 and 18-10 are pretty much the same quality only slight chemical differences. I suspect that you did not see the 1 on the 10, as the name 18-8 or 18-10 is the ratio of the components and if one of the components value was 0 percent, it would not be SS.

From memory the metals indicated are chroiumim and nickle but I could have that off.

 
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jpender
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Posted Wed Nov 13, 2013, 3:47pm
Subject: Re: Anyone know if Buono kettle bottom plate is 18/8 or 18/0 stainless steel?
 

It might have said 18/0. That would be a stainless steel with no nickel in it. The chromium and nickel are there to resist corrosion. They're what makes stainless steel "stainless". The lack of nickel in the 18/0 stainless also means it is magnetic, something that would matter to you if you had an induction stove.

I believe that the higher chromium and nickel content result in an alloy that is more corrosion resistant. So in that sense 18/10 is better than 18/0.

Everything I just wrote could be completely wrong.
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rmp71701
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Posted Wed Nov 13, 2013, 4:30pm
Subject: Re: Anyone know if Buono kettle bottom plate is 18/8 or 18/0 stainless steel?
 

Thanks for the reply.  I'm certainly no metallurgist.  I actually did intend 18/0 - but that is because it was my understanding that stainless can come in that grade as well.  I think the nickel content is so minimal (like less than 1%) that it is called 18/0, even though it is technically still considered stainless.  But it is far inferior to 18/8 and thus more susceptible to rust.  That's why I'm asking about the bottom plate of the Buono.
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jpender
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Posted Wed Nov 13, 2013, 5:55pm
Subject: Re: Anyone know if Buono kettle bottom plate is 18/8 or 18/0 stainless steel?
 

There are alloys that have zero nickel, like 430. It is still corrosion resistant since it is the chromium that protects the steel from oxidation. It's just less resistant than an 18/8 or 18/10 steel like 304. You're probably right that this makes the Fino bottom plate more susceptible to corrosion but by how much I can't say. I've noticed that all of our stainless pots, pans, tea kettles and even my moka pot are non-magnetic. The moka pot says "18/10" on the bottom.
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