Re: Brass
- From: Eric Stevens <eric.stevens@xxxxxxxxx>
- Date: Sat, 23 Jul 2005 12:11:22 +1200
On Fri, 22 Jul 2005 18:31:22 GMT, Philip Deitiker
<Donevenask@xxxxxxxxxxxxxxx> wrote:
>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.
That is the Deitiker definition. Strictly speaking Brasses are
predominantly Copper-Zinc alloys and Bronzes are Copper-Tin. They each
can have other alloying elements. I now see down below that you have
found that from Wikepedia.
>> 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.
>"
Bronze would keep a better edge than iron. Few soldiers had
steel-edged blades.
Eric Stevens
.
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