INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Material Designations

Aluminum Designations by swertel
Posted: 27 Jun 02

From The Science and Engineering of Materials by Donald R. Askeland

Aluminum alloys can be divided into two major groups: wrought and casting alloys.  These groups can be divided into two sub-groups: heat-treatable and nonheat-treatable alloys.

The first number of the designation specifies the principle alloying elements.  The remaining numbers refer to the specific composition.  The temper designation (T or H) refers to heat-Treated or strain-Hardened.  Other designations include annealed (O), solution-treated (W), or as-fabricated (F).  The numbers following the T or H refer to the type of heat treatment or amount of strain hardening.

Wrought Al Alloys:
1xxx Commercially pure (>99% Al)
2xxx Al-Cu and Al-Cu-Li
3xxx Al-Mn
4xxx Al-Si and Al-Mg-Si
5xxx Al-Mg
6xxx Al-Mg-Si
7xxx Al-Mg-Zn
8xxx Al-Li, Sn, Zr, or B

Casting Al Alloys:
1xx Commercially pure Al
2xx Al-Cu
3xx Al-Si-Cu or Al-Mg-Si
4xx Al-Si
5xx Al-Mg
7xx Al-Mg-Zn
8xx Al-Sn

I do not have a good reference at this time that relates the last digits with any specific composition.  If anyone does, please notify me so I can add it to this FAQ.


Back to Metal and Metallurgy engineering FAQ Index
Back to Metal and Metallurgy engineering Forum

My Archive


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close