brass ore copper

[michael westen]

hi is there a big diverents between brass and copper for heat transfer

anyone no somting a bout this have bin looking for hard data but dint vind anything on it

and brass is a hole lot easy'r to work whit then copper but dont want to use it if there is a diverents whit copper

greetings michael

[*JEREMY*]

From what I have read brass is actually below aluminum in heat transfer.

[Silversinksam]

Thermal Properties of Materials
Thermal Conductivity, W/cm-K
Metals
Aluminum 2.165
Beryllium 1.772
Beryllium-copper 1.063
Brass 70% copper, 30% zinc 1.220
Copper 3.937
Gold 2.913
Iron .669
Lead .343
Magnesium 1.575
Molybdenum 1.299
Monel .197
Nickel .906
Platinum .734
Silver 4.173
Stainless Steel-321 .146
Stainless Steel-410 .240
Steel, low carbon .669

[The Overclocker]

if you plan to make something out of brass you may as well make it out of foam or clay - it's a crap conductor, copper is soft and can be worked with easilly so use it (please)

[ButcherUK]

Copper is much harder to work than Al - it gums up your tools if it gets hot (which it does really easily). Also it's heavy. It does have a major advantage over Al in that copper is really easy to solder, Al is not. And of course copper is great for heat conduction.

[Intraveinous]

How fast is a good bit speed? 150-200 rpm? Slower? Faster? Any special bit for cutting into copper?
peace
John

[JFettig]

i use a hacksaw.....

[michael westen]

tnx for the info Silversinksam even do i am not happy whit the anser hehehe :)

this is going to be a hard job then
wanted to make a block whit a lot of 1 1/2 mm groove's in it so it will have a huge surface area
will have to be very carefulcareful whit the machine that the mill wont break and use a lot of cooland on it when working on it

have a look of what i am going to make
http://forums.overclockers.ws/vb/showthread.php?s=&threadid=64047

Intraveinous

soft metal's need a lot of rpm like for aluminum you need 4 times the rpm then you need for steel have to look in my books someware in the basement howe muths copper need's it hase bin 16 years a go wen use them (DAMN i am getting old LOL)

greetings michael

[ButcherUK]

Originally posted by Intraveinous
How fast is a good bit speed? 150-200 rpm? Slower? Faster? Any special bit for cutting into copper?
peace
John

Depends on what you're doing to it - different sizes and types of tool need different speeds.