View Full Version : Curious about brass aluminium

09-19-2002, 05:46 PM
Has anyone used this? Does it machine nicely like brass?
I'm curious as to where it's best used? Why would you use brass aluminium instead of using brass or aluminum?


09-19-2002, 09:59 PM
I don't know if you mean what we used to call aluminized bronze. It machines great. We used to have to machine shouldered nuts for 1 1/4" sae rod for heavy pressure applicators. It worked great.


09-19-2002, 10:26 PM
It is made for those among us who have extreme difficulty in making up our minds.

Herb W
09-20-2002, 12:10 AM
If aluminum bronze is what you're referring to, it's a bearing alloy. (actually a group of alloys). If you go to this site http://www.copper.org/industrial/bronze_bearing.html and scroll down a bit, there is some info on it.

Ragarsed Raglan
09-20-2002, 02:27 PM

It's great stuff! And although being a good bearing material (it has excellent heat transfer properties), it's pretty strong stuff. If you want the best bronze around though try some Copper Berylium, it's awesome. This stuff (CuBe) is used in the head closure on race engines, in fact it has replaced the Coopers ring (a rolled soft steel ring charged with nitrogeon) formerly used for head sealing on a lot of race engines.

Berylium is one of the wonder metals - AlBeMet (Aluminium/Berylium) is stronger than some high chrome/nickel alloys and has a massive strength density value. A small amount (less than 2%) when alloyed in Aluminium will quadruple its tensile strength. Only problem is Berylium is pretty rare, and hence expensive (I believe that only about 20 tons a year is mined and produced). We had an AlBeMet water pipe on a F1 engine that measured some 1 1/2" dia x 20" long, with a wall thickness of 0.015" ~ the coolant pressure it had to withstand was 4.5 bar gauge, and 150*C. It cost about $300USD for that pipe!


09-20-2002, 03:40 PM
If you are going to machine anything with beryllium in it, be sure you have CAREFULLY read all the safety information about the exact material and process you are going to use. Beryllium poisoning is not a pretty way to die.

Herb W
09-26-2002, 02:05 PM
Came across a reference to aluminum brass.
Says it's about 59%Cu 38%Zn 3%Al. Doesn't list any particular uses, just that the Al gives increased strength.