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I'm trying to find out the details of the metal identification numbers (like 2024 and 7075). I need a comprehensive list of what all the variations of these numbers mean.
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Use have aluminum numbers as reference, but I'll try to give you full representation.
From The Science and Engineering of Materials by Donald R. Askeland
STEEL
AISI steel designations have 4 or 5 digits. The first two numbers refer to the major alloying elements present; the last two or three refer to the average percent carbon. For example, a 1020 steel is a plain-carbon (10XX) with about .20% carbon (XX20). 4340 steel is an alloy with about .40% carbon (XX40) and other alloying elements (43XX). I do not have a good reference at this time that relates the first two digits with any specific alloy element and percentage of.
ALUMINUM
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 think I'll create an FAQ about this. Thanks for making me look this up again. It has been a while since I refreshed my memory on this subject.
--Scott
From The Science and Engineering of Materials by Donald R. Askeland
STEEL
AISI steel designations have 4 or 5 digits. The first two numbers refer to the major alloying elements present; the last two or three refer to the average percent carbon. For example, a 1020 steel is a plain-carbon (10XX) with about .20% carbon (XX20). 4340 steel is an alloy with about .40% carbon (XX40) and other alloying elements (43XX). I do not have a good reference at this time that relates the first two digits with any specific alloy element and percentage of.
ALUMINUM
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 think I'll create an FAQ about this. Thanks for making me look this up again. It has been a while since I refreshed my memory on this subject.
--Scott
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Take a look at this link for a good explination
on steel
on steel
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