On Mon, 27 Feb 2006 19:47:07 -0500, Ned Simmons
wrote:

In article ,
says...
What does it mean when I see something like " lot of 6061 aluminum tubes" ?
I mean what does the number mean and how can I make sense of it ?

Thanks !

From "Alloy and Temper Designation Systems for Aluminum"

1xxx 99%+ aluminum
2xxx copper
3xxx manganese
4xxx silicon
5xxx magnesium
6xxx magnesium & silicon
7xxx zinc
8xxx other
9xxx unused


The first digit refers to the major alloy group. In the 2xxx thru 8xxx
alloys, the last three digits are assigned arbitrarily to identify
specific alloys.

Ned Simmons

9xxx will be used for transparent aluminum.

Gunner



"A prudent man foresees the difficulties ahead and prepares for them;
the simpleton goes blindly on and suffers the consequences."
- Proverbs 22:3