Re: [CR] Spokes with S on the head?


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Date: Mon, 10 Jan 2011 08:37:43 -0500
From: "Ken Freeman" <kenfreeman096@gmail.com>
To: paccoastcycles <paccoastcycles@sbcglobal.net>
Cc: Classicrendezvous@bikelist.org
Subject: Re: [CR] Spokes with S on the head?


I'm no metallurgist, but I do know there are perhaps over 100 alloys classed as stainless, with a wide range of properties. Here as bike consumers we don't get the whole story as far as materials go. Think about the term "alloy," as usually used to refer to aluminum used in bike parts. Accurate but not specific.

On Mon, Jan 10, 2011 at 1:34 AM, paccoastcycles < paccoastcycles@sbcglobal.net> wrote:
> I had been told that there is a balance between the metals that are alloyed
> that created certain characteristics. The characteristics seemed pretty much
> aligned with what Carlos was told. I'm not saying this is so, because I'm no
> metalurgist. But it made sense to me that chrome and nickel were what made
> stainless more resistant to oxidizing but that too much will make it
> brittle. If that's true, I'd have to say the sink salesman was pretty "right
> on" for a salesman. No offense to any salesmen out there!
>
> Chuck Hoefer
> Pacific Coast Cycles
> Oceanside, Ca.
> ----- Original Message ----- From: "verktyg" <verktyg@aol.com>
> To: <Classicrendezvous@bikelist.org>
> Sent: Sunday, January 09, 2011 10:06 PM
> Subject: Re: [CR] Spokes with S on the head?
>
>
>
> Carlos,
>>
>> Sales-zoid horse pucky!
>>
>> Stainless steel commercial and residential plumbing components are made of
>> 300 series stainless which is called 18/8 outside the US. That means 18%
>> chrome and 8% nickel with a low carbon content (0.15% down to 0.1%).
>>
>> The corrosion resistance comes mostly from the chrome content with nickel
>> adding some additional benefits.
>>
>> The percentages of alloy vary depending on the specific grade of 300 SS
>> from 16%-21% Cr and 6%-10% Ni nominal. Plumbing fixtures are usually made of
>> plain vanilla 302 or 303 SS because they are easy to form and offer adequate
>> corrosion resistance to all but the strongest chemicals.
>>
>> These kinds of stainless steels can only be hardened through cold working
>> - rolling, drawing, forming etc.
>>
>> There are other "families" of stainless steel that can have higher carbon
>> content but they are not used in the plumbing industry.
>>
>> Chas. Colerich
>> Oakland, CA USA
>>
>> Carlos Ovalle wrote:
>>
>>> When I was on the market for stainless-steel kitchen accessories for a
>>> commercial project, a sales representative explained that the higher the
>>> carbon content, the stronger but less rust-resistant stainless steel
>>> becomes. He also said something about the content of nickel in the mix,
>>> where nickel will make the stainless steel more stainless but more
>>> expensive.
>>>
>>> Carlos Ovalle
>>> Long Beach, California, USA