Wrought light aluminium alloys

                                                                                BSspecifications 1470–75

Material designations
Unalloyed aluminium plate,sheet and strip:
1080Acommercial pure aluminium 99.8 per cent
1050Acommercial pure aluminium 99.5 per cent
1200commercial pure aluminium 99.0 per cent
Non-heat-treatable aluminium alloy plate,sheet and strip:
3103AlMN ,3105AlMnMg, 5005AlMg ,5083AlMgMn ,5154AAlMg ,5251AlMg ,5454AlMgMn
Heat-treatable aluminium alloy plate,sheet and strip:
2014AAlCuSiMg ,Clad 2014AAlCuSiMg clad with pure aluminium 2024AlCuMg ,Clad 2024AlCuMg ,Clad 2024AlCuMg ,clad with pure aluminium ,6082AlSiMgMn

Abbreviations for basic temper
As fabricated:F The temper designation F applies
to the products of shaping processes in which nospe-
cial control over thermal conditions or strainharden-
ing is employed. For wrought products there are no
specified requirements for mechanical properties.
Annealed:O The temper designation O applies
to wrought products which are annealed to obtain
the lowest strength condition.
Abbreviations for strain hardened materials
The temper designation H for strain hardened products (wrought products only) applies to products subjected to the application of cold work after annealing (hot forming) and partial annealing or stabilizing,in order to achieve the specified mechanical properties. The H is always followed by two or more digits,indicating the final degree of strain hardening. The first digit (1,2 or 3) indicates the following:
H1 strain hardened only
H2 strain hardened and partially annealed
H3 strain hardened and stabilized
The second digit (2,4,6 or 8) indicates the degree of strain hardening,as follows:

HX2tensile strength approximately midway between O temper and HX4 temper
HX4tensile strength approximately midway between O temper and HX8 temper
HX6tensile strength approximately midway between HX4 temper and HX8 temper
HX8full hard temper Abbreviations for heat-treated materials
The temper designation T applies to products which are thermally treated,with or without supplementary strain hardening,to produce stable tempers. The T is always followed by one or more digits,indicating the specific sequence of treatments as follows:
T3solution heat treated,cold worked,and natu- rally aged to a substantially stable condition
T4solution heat treated and naturally aged to a substantially stable condition
T5cooled from an elevated temperature shaping process and then artificially aged
T6solution heat treated and then artificially aged
T8solution heat treated,cold worked and then artificially aged

The additional digits for the T tempers TX51 indicate that the products have been stress relieved by controlled stretching.
Tables 4.5,4.6,4.7 and 4.8 show the characteristics and properties of aluminium alloys.