Re: Brass
- From: "deowll" <deowll@xxxxxxxxxxxxx>
- Date: Sun, 31 Jul 2005 21:11:26 -0500
"Horace LaBadie" <hwlabadiejr@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:hwlabadiejr-F15831.16502331072005@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
> In article <J2aHe.20342$G71.4928@xxxxxxxxxxxxxxxxxxxxxx>,
> "deowll" <deowll@xxxxxxxxxxxxx> wrote:
>
>> "maison.mousse" <maison.mousse@xxxxxxxxxx> wrote in message
>> news:42e1f019$0$25029$8fcfb975@xxxxxxxxxxxxxxxxxx
>> >
>> > Eric Stevens a écrit dans le message ...
>> >>On Fri, 22 Jul 2005 14:41:43 GMT, markovic@xxxxxx (markovic) wrote:
>> >>
>> >>>
>> >>>> > > 2. Are the words used to mean the same thing?
>> >>>
>> >>>bronze can mean copper with tin, arsenic, or even natural impurities.
>> >>>My
>> >>>guess is that brass is defined in a similarly flexible way.
>> >>
>> >>From a metallurgical point of view, 'Admiralty Bronze' is a brass.
>> >>
>> >>
>> >>
>> >>Eric Stevens
>> >>
>> >
>> >
>> > Bass contains copper and zinc while bronze contains copper and tin.
>> > "Bronze or brass does not refer to alloys of a definite composition
>> > but
>> > rather to all alloys of copper with zinc or copper with tin
>> > respectively
>> > in
>> > varying percentages.
>> >
>> > Wikipedia is not a good source for scientific information
>> > but for definitions for those with a passing interest.
>> > A general chemistry text is better. For those with a greater interest
>> > a
>> > text on metallurgy is in order.
>> >
>> > JL
>> >
>> >
>>
>> And my problem is nothing before 1700 contained zinc so what the heck was
>> all the "brass" before then made off? My guess was it contained lead for
>> easier casting but that would have made it weaker. My next guess is that
>> there is no clear meaning to the word brass as it is translated. It might
>> just as well be copper alloy and be done with it.
>>
>>
>
> So, you didn't see the reply about "calamine brass" and the many
> thousands of Roman examples of brass extant? Brass does not need zinc
> metal, only the ore.
>
Nope but I've found enough data now to understand that some refined copper
would have contained zinc as an impurity. What had kept me from guessing
that was occurring was I'd read that the refining off other ores vaporized
the zinc. Apparently that didn't always happen and when it did the
condensation was sometimes collected.
>
> HWL
.
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