The majority of all aluminum sold on the market is alloyed with one or more additives. Unalloyed aluminum (pure aluminum) is relatively soft, so alloying elements are added or cold-worked to increase the breaking strength.
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but nothing about the uniformity and condition.
Within plate manufacturing, the industry has developed various designations that describe the suitability of a given plate for decorative anodizing. It will most often be alloy 5005 where this designation is used, but it is also seen applied to other alloys.
AQ or EQ is used for qualities that are visually uniform after anodizing.
NQ is used for alloys which will most often be visually non-uniform after anodizing.
If you want a uniform expression on, for example, a facade, it must also be ensured that all the material comes from the same Charge. HAI always recommend a sample anodizing to see the final result of a given batch.
In order to achieve the best result, you must decide which alloy(s) are desired already in the idea phase. For example, you cannot get the same alloy in plates as in profiles.
The majority of all aluminum sold on the market is alloyed with one or more additives. Unalloyed aluminum (pure aluminum) is relatively soft, so alloying elements are added or cold-worked to increase the breaking strength.
The international system of alloying is equal to the European standard.
| Element | Designation | Type |
|---|---|---|
| Pure aluminium | 1000 series | Not hardenable |
| Copper | 2000 series | Hardenable |
| Manganese | 3000 series | Not hardenable |
| silicon | 4000 series | Not hardenable |
| Magnesium | 5000 series | Not hardenable |
| Magnesium + silicon | 6000 series | Hardenable |
| Zinc | 7000 series | Hardenable |
| Other alloying elements | 8000 series |
There is a very large difference in how suitable the various alloys are for the desired application.
The indicative table below gives some good indications, but no guarantees.
| Alloy type | Designation |
|---|---|
| AN AW-1050A DDQ: | Contains 99,5% aluminum in a soft state and is used for items that need to be deep drawn. Available in the following thicknesses: 1,00 mm, 1,25 m, 1,05 mm and 2,00 mm. Available in many variants, including Lak quality, which is not suitable for decorative anodizing |
| AN AW-2007 | Is a copper alloy which typically contains between 4,0 and 5,0% copper, and is suitable for the manufacture of machine parts, bolts and rivets. It is very similar to EN AW-2011, but a little harder. It is a short chip alloy suitable for machining, threading and high machining speeds. The alloy has a low corrosion resistance and is not suitable for welding due to the high content of copper. It is not approved according to ROHS. |
| AN AW-2011 | Is a copper alloy which typically contains between 4,0 and 5,0% copper, and is suitable for the manufacture of machine parts, bolts and rivets. It is very similar to EN AW-2007, but a little softer. It is a short chip alloy that is suitable for machining, threading and high machining speeds, and produces a glossy surface after machining. It has a high strength against metal fatigue. The alloy has poor corrosion resistance and is not suitable for welding due to the high content of copper. It may be approved according to ROHS. |
| AN AW-2014 | Is a copper alloy which typically contains between 4,0 and 5,0% copper. It is a short chipped alloy that is suitable for machining and has a high strength, thus being very similar to EN AW-2011 and EN AW-2007. It is harder than EN AW-2011. The alloy is typically used for military purposes and the aircraft industry. It is approved according to ROHS. |
| AN AW-2017A | Is a copper alloy with a high copper content. It is a short chipped alloy that is suitable for machining. The alloy has a low corrosion resistance and is not suitable for welding due to the high content of copper. It is not suitable for decorative anodizing. |
| AN AW-2024 | Is a copper alloy with a high copper content. It is a short chipped alloy that is suitable for machining. The alloy has a low corrosion resistance and is not suitable for welding due to the high content of copper. It is not suitable for decorative anodizing. |
| AN AW-3003 | Is a manganese alloy with a high corrosion resistance. The alloy has medium strength and is suitable for welding and bending. |
| AN AW-3005 | Is a manganese alloy with a high corrosion resistance. The alloy has medium strength and is suitable for welding and bending. |
| AN AW-3103 | Is a manganese alloy with a high corrosion resistance. The alloy has medium strength and is suitable for welding and bending. |
| AN AW-3105 | Is a manganese alloy with a high corrosion resistance. The alloy has medium strength and is suitable for welding and bending. |
| AN AW-5005 | Is a manganese alloy with a high corrosion resistance. The alloy has medium strength and is suitable for welding and bending. |
| AN AW-5005A | Suitable for machining and bending and has high corrosion resistance and good for welding. |
| AN AW-5052 | Is easy to process and has a high corrosion resistance as well as good welding properties. The alloy is not suitable for anodizing. |
| AN AW-5083 | Is seawater resistant, and has a medium strength, high corrosion resistance and good weldability. The alloy has a medium anodizability. |
| AN AW-5083 | Is a cast and low-stress alloy, which is extremely suitable for machining. |
| AN AW-5086 | Is seawater resistant and has a high corrosion resistance as well as good welding properties. The alloy has a medium anodizability. |
| AN AW-5754 | Is seawater resistant, and has a high corrosion resistance and good weldability. The alloy has a medium anodizability. |
| EN AW-5754 Cast EN AW-6005A | Is an alloy with medium corrosion resistance and good weldability. The strength of the alloy is higher than that of EN AW-6063. |
| AN AW-6026 | Is a short chipped alloy with a high strength as well as medium corrosion resistance and medium weldability. The alloy has a medium anodizability. |
| AN AW-6060 | Is suitable for decorative anodizing and has a high corrosion resistance. The alloy is suitable for welding. |
| AN AW-6061 | Is suitable for decorative anodizing, and has a high corrosion resistance and good anodizability. The alloy is suitable for welding. |
| AN AW-6063 | Is suitable for decorative anodizing, and has a high corrosion resistance and good anodizability. The alloy is suitable for welding |
| AN AW-6073 | Is a variant of EN AW-6082, and is better to anodize than EN AW-6082, as the aluminum with this alloy gets a more uniform surface. |
| AN AW-6082 | Has a high strength and good corrosion resistance. The alloy has good weldability and can be used for anodizing. |
| AN AW-6101B | Is suitable for decorative anodizing, and has a high corrosion resistance and good anodizability. The alloy is suitable for welding |
| AN AW-7010 | AN AW-7010 |
| AN AW-7020 | Is a short chipped alloy with a very high strength. The alloy has a low corrosion resistance and a low weldability and anodizability. |
| AN AW-7021 AN AW-7075 | Is a short chipped alloy with a very high strength. The alloy has a low corrosion resistance and a low weldability and anodizability. |
| Hokotol | Is a tool alloy that has a high strength throughout the sheet thickness. The alloy has a low corrosion resistance and a strength that is as high as that of several types of steel. It is used for aircraft, military purposes and plastic molded molds (forged 7075). The advantage of HOKOTOL is that the material does not change properties during processing. |
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