Re: Brass


"Philip Deitiker" <Donevenask@xxxxxxxxxxxxxxx> wrote in message
news:_XaEe.23208$5N3.22974@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> markovic@xxxxxx (markovic) says in
> news:markovic-2207050941010001@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx:
>
>>
>>> > > 2. Are the words used to mean the same thing?
>>
>> bronze can mean copper with tin, arsenic, or even natural
>
> Bronze is a color, Brass is a specific type of clustering of weather
> durable metals, Bronze for instance can be used with fresh water, but
> transitions between other metals and crude brass require yellow brass
> or else the connection will undergo electrolysis.
>
>> impurities. My guess is that brass is defined in a similarly
>> flexible way.
>
> "
> Bronze is the traditional name for a broad range of alloys of copper.
> It is usually copper with zinc and tin but it is not limited to those
> metals.
> "
>
> Source Wikipedia.
>
> "
> Brass is an alloy of copper and zinc. Some types of brass are called
> bronzes, despite their high zinc content.
>
> Brass is a versatile manufacturing material because of its hardness
> and workability. Alpha brasses, with less than 40% zinc, are
> malleable and can be worked cold. Beta brasses, with a higher zinc
> content, can only be worked hot, but are harder and stronger. White
> brass, with more than 45% zinc, is too brittle for general use. Some
> types of brass have other metals added to modify their properties.
> Brass has a yellow colour, somewhat similar to gold. Because of this,
> and its relative resistance to tarnishing it is used as a decoration.
> "
>
> IOW Brass is a type of Bronze with alot of Zinc.
>
> Also you should read what Wikipedia says about Bronze.
>
> "
> Bronze was also stronger than iron, another common metal of the era,
> and quality steels were not available until thousands of years later.
> Nevertheless the Bronze Age gave way to the Iron Age as the shipping
> of tin around the Mediterranean ended during the major population
> migrations around 1200 - 1100 BC, which dramatically limited supplies
> and raised prices. Bronze was still used to a considerable extent
> during the Iron Age, but for many purposes the weaker iron was
> sufficiently strong to serve in its place. As an example, Roman
> officers were equipped with bronze swords while foot soldiers had to
> make do with iron blades.
> "
>
>
>
>

My reason for this question is that the extracting of zinc only occured
after 1700 but we get a lot of statements about brass from much earlier
times. It can't have contained zinc.


>
>
>
>
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.

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