Re: Brass


"Eric Stevens" <eric.stevens@xxxxxxxxx> wrote in message
news:6vv2e19mina1vgv9tp0v55n3b6rjctjjuq@xxxxxxxxxx
> 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.
>
Again it depends on what you call bronze and how it's worked.

The other thing is heavily forged iron can become at least low grade steel.
The Romans don't seem to have been the worlds best at this but they did
okay.


>
>
> Eric Stevens
>


.

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