Ja mislim da ti ne gresis da je to tako kako si napisao, a moze biti razne debljine sto do skora ni ja  nisam znao dok dok nisam procitao na ovom forumu.    

Pisao sam vec o tome,dodaju se Si,Fe,Cu,Mn,Cr,Zn,Ti,Be,ali u malom procentu,od 0.00008 do 0.4%,a u zici za varenje ima jos nekih elemenata koji imaju ulogu dezoksidansa.
Posle livenja i valjanja materijal ide na ocvrscavanje(zarenje,hladno ojacavanje,toplo oblikovanje,termomehanicko oblikovanje,povratno zarenje,rastvarajuce zarenje,vestacko starenje),stanje legure je bitno kod savijanja,da ne bi doslo do mikroprskotina koje dovode do interkristalne korozije,pa za svako proizvodno stanje legure postoje koeficijenti savijanja,na osnovu kojih se dobija radijus savijanja.
Kupac narucuje materijal prema nameni.Na primer veoma je bitno koji su legirajuci elementi kod materijala za brodogradnju,zbog interkristalne i galvanske korozije.

http://en.wikipedia.org/wiki/Aluminium_alloy

Wrought aluminium alloy composition limits (% weight)Alloy   Si   Fe   Cu   Mn   Mg   Cr   Zn   V   Ti   Bi   Ga   Pb   Zr   Limits††   Al
Each   Total
1060   0.25   0.35   0.05   0.03   0.03   0.03   0.05   0.05   0.03   0.03   0.03   0.03   0.03   0.03      99.6 min
1100   0.95 Si+Fe   0.05–0.20   0.05         0.10                     0.05   0.15   99.0 min
2014   0.50–1.2   0.7   3.9–5.0   0.40–1.2   0.20–0.8   0.10   0.25      0.15               0.05   0.15   remainder
2024   0.50   0.50   3.8–4.9   0.30–0.9   1.2–1.8   0.10   0.25      0.15               0.05   0.15   remainder
2219   0.2   0.30   5.8–6.8   0.20–0.40   0.02      0.10   0.05–0.15   0.02–0.10            0.10–0.25   0.05   0.15   remainder
3003   0.6   0.7   0.05–0.20   1.0–1.5         0.10                     0.05   0.15   remainder
3004   0.30   0.7   0.25   1.0–1.5   0.8–1.3      0.25                     0.05   0.15   remainder
3102   0.40   0.7   0.10   0.05–0.40         0.30      0.10               0.05   0.15   remainder
4043   4.5–6.0   0.80   0.30   0.05   0.05      0.10      0.20               0.05   0.15   remainder
5052   0.25   0.40   0.10   0.10   2.2–2.8   0.15–0.35   0.10                     0.05   0.15   remainder
5083   0.40   0.40   0.10   0.40–1.0   4.0–4.9   0.05–0.25   0.25      0.15               0.05   0.15   remainder
5086   0.40   0.50   0.10   0.20–0.7   3.5–4.5   0.05–0.25   0.25      0.15               0.05   0.15   remainder
5154   0.25   0.40   0.10   0.10   3.10–3.90   0.15–0.35   0.20      0.20               0.05   0.15   remainder
5356   0.25   0.40   0.10   0.10   4.50–5.50   0.05–0.20   0.10      0.06–0.20               0.05   0.15   remainder
5454   0.25   0.40   0.10   0.50–1.0   2.4–3.0   0.05–0.20   0.25      0.20               0.05   0.15   remainder
5456   0.25   0.40   0.10   0.50–1.0   4.7–5.5   0.05–0.20   0.25      0.20               0.05   0.15   remainder
5754   0.40   0.40   0.10   0.50   2.6–3.6   0.30   0.20      0.15               0.05   0.15   remainder
6005   0.6–0.9   0.35   0.10   0.10   0.40–0.6   0.10   0.10      0.10               0.05   0.15   remainder
6005A†   0.50–0.9   0.35   0.30   0.50   0.40–0.7   0.30   0.20      0.10               0.05   0.15   remainder
6060   0.30–0.6   0.10–0.30   0.10   0.10   0.35–0.6   0.05   0.15      0.10               0.05   0.15   remainder
6061   0.40–0.8   0.7   0.15–0.40   0.15   0.8–1.2   0.04–0.35   0.25      0.15               0.05   0.15   remainder
6063   0.20–0.6   0.35   0.10   0.10   0.45–0.9   0.10   0.10      0.10               0.05   0.15   remainder
6066   0.9–1.8   0.50   0.7–1.2   0.6–1.1   0.8–1.4   0.40   0.25      0.20               0.05   0.15   remainder
6070   1.0–1.7   0.50   0.15–0.40   0.40–1.0   0.50–1.2   0.10   0.25      0.15               0.05   0.15   remainder
6082   0.7–1.3   0.50   0.10   0.40–1.0   0.60–1.2   0.25   0.20      0.10               0.05   0.15   remainder
6105   0.6–1.0   0.35   0.10   0.10   0.45–0.8   0.10   0.10      0.10               0.05   0.15   remainder
6162   0.40–0.8   0.50   0.20   0.10   0.7–1.1   0.10   0.25      0.10               0.05   0.15   remainder
6262   0.40–0.8   0.7   0.15–0.40   0.15   0.8–1.2   0.04–0.14   0.25      0.15   0.40–0.7      0.40–0.7      0.05   0.15   remainder
6351   0.7–1.3   0.50   0.10   0.40–0.8   0.40–0.8      0.20      0.20               0.05   0.15   remainder
6463   0.20–0.6   0.15   0.20   0.05   0.45–0.9      0.05                     0.05   0.15   remainder
7005   0.35   0.40   0.10   0.20–0.70   1.0–1.8   0.06–0.20   4.0–5.0      0.01–0.06            0.08–0.20   0.05   0.15   remainder
7022   0.50   0.50   0.50-1.00   0.10–0.40   2.60–3.70   0.10–0.30   4.30–5.20      0.20               0.05   0.15   remainder
7072   0.7 Si+Fe   0.10   0.10   0.10      0.8–1.3                     0.05   0.15   remainder
7075   0.40   0.50   1.2–2.0   0.30   2.1–2.9   0.18–0.28   5.1–6.1      0.20               0.05   0.15   remainder
7079   0.3   0.40   0.40–0.80   0.10–0.30   2.9–3.7   0.10–0.25   3.8–4.8      0.10               0.05   0.15   remainder
7116   0.15   0.30   0.50–1.1   0.05   0.8–1.4      4.2–5.2   0.05   0.05      0.03         0.05   0.15   remainder
7129   0.15   0.30   0.50–0.9   0.10   1.3–2.0   0.10   4.2–5.2   0.05   0.05      0.03         0.05   0.15   remainder
7178   0.40   0.50   1.6–2.4   0.30   2.4–3.1   0.18–0.28   6.3–7.3      0.20               0.05   0.15   remainder
†Manganese plus chromium must be between 0.12–0.50%.
††This column lists the limits that apply to all elements, whether a table column exists for them or not, for which no other limits are specified.

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5000 series
[edit]
5005

Aluminium alloy 5005 is used in decorative and architectural applications that require an anodized finish.[6]
[edit]
5052/5251/5754

Aluminium alloys 5052, 5251, 5754 are very similar grades, only differing in the amount of magnesium. 5052 has 2.5% magnesium and is commonly used in the U.S.; 5251 has 2% magnesium and is commonly used in the UK; and 5754 has 3% magnesium and is commonly used in Europe. Due to their formability, corrosion resistance and weldability these grades are commonly used in pressure vessels, tanks, fitting, boat hulls, and van bodies. Their salt water corrosion resistance is better than the 1200 grade and their strength is better than the 3003 grade.[6]
[edit]

I do not understand.  

Mudriiiiiiiiiiiii daj sliku svog kabinasa  

Evo linka pa ko voli nek se nagleda camca iz kojeg se hvataju ribice i prespava se u njemu

E sad, stavio si sliku od pre tri godine, daj nesto novije, od smudja i nevidim camac.  

prednji kraj je toliko orginalno izradjen da Mudri ne zeli otkrivati detalje prije nego sto ideje prenese na novi 

Pa zato i kazem, vidim da nesto krije na pramcu

tko zna mozda se i odluci na pokazivanje...

Neverujem Mario, mnogo je skrt na fotografijama i ovo je  jedva proslo na jedvite jade steta.

ali moras priznati da jedini ima extra reklamu na kabini 

Priznajem, @Mudri jel ono Yamaha ili Mariner i dali je pramac u apatinskom  stilu ili u spic

Mudri jel i kabina od aluminija. Nekako mi na slici čamac izgleda bolje nego uživo

kabina je od al i presvucena plastikom...i ne zezajte Mudrog vise