Sheet metal from aluminum alloys of aluminum and intended for export and the needs of the national economy, is made in accordance with GOST 21631-76. Fixed assortment is varied: it includes brushed aluminum sheet width of 0,6-2,0 m and 2,0-7,2 m in length (depending on the state of the material). rolled thickness ranges from 0.3 to 10.5 mm. Sheets produced by process regulations aluminum marks A0, A5, A6, A7 containing basic element from 99.0 to 99.7% (GOST11069-74) or alloys whose chemical composition corresponds to GOST 4784-74, 1131-76. According to a method for producing polished aluminum sheet is divided into:
clad (no additional markings);
Clad - coated aluminum alloy with a certain content of ligatures and impurity metals. This rental is classified depending on the thickness of the plating on the technology (grade B), normal (grade A) and thickening (grade A). According to state of the metal brushed aluminum recovered, not the last heat treatment (the additional symbols available), and the sheets are subjected to the corresponding operations:
annealed (M);
cold-worked (H);
semicold-worked (H2);
quenching and artificial aging natural (T1 and T, respectively); hardened, cold-worked, and naturally aged (TN). The presence of capital letters B and P in the marking of rolled aluminum, coming after a year of the approval of the standard specifies the quality of the surface finish: U - high, B - high. The absence of signs includes the usual finishing material. On delivery, the party rolled metal made of aluminum sheet is placed on the upper stamp (applied paint or distracting), which specifies the characteristics such as alloy grade (aluminum), batch number, the state of the material, sheet thickness, plating and due to tech control.

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