[TheForge] welding red brass, slightly OT

[James Binnion]

In most alloys (eutectic alloys being the exception) there is a  
melting range defined by the terms solidus and liquidus Once you  
exceed the solidus temp the alloy will be partly solid and partly  
liquid. How mushy it is depends on where you are in that temperature  
range. If the alloy has a wide melting range you can really play with  
it while brazing or welding. Narrow melting ranges don't leave much  
leeway to push it around. Eutectics and pure metals have a melting  
point, above that point they are liquid below that point they are solid.

James Binnion
jbin at well.com



On Jul 1, 2009, at 3:57 PM, Andy Gladish wrote:

> On Wed, 01 Jul 2009 13:39:36 -0700, James Binnion <jbin at well.com>  
> wrote:
>
>> Hey Ries,
>>
>> The melting points of silicon bronze are just slightly higher (C6510
>> at 1940F ) or exactly the same (C6550 at 1880F) as the red brass, it
>> will be welding :-)  You could TIG braze it with the copper/silver
>> eutectic braze alloy or even sterling silver wire for that matter to
>> avoid the high zinc content of typical silver braze alloys.
>>
>> Jim
>>
>> James Binnion
>> jbin at well.com
>
>
> I didn't know how to interpret some of the data on the materials  
> sheet I
> looked at- there were two points listed, liquefaction at 1880 for  
> both red
> brass and silicon bronze, and a lower (1790-1810) melting point "below
> which the material is crystalline"
> Assuming that puddle temps would be at the higher number?
>
> Andy G.
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