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Info about alloys

Info about alloys

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.

"Experience is something we share with each other and our customers. The customer has the raw material, we have the know-how, so at HAI advice and guidance are part of the overall solution.”

Stig Langhoff / Sales Manager

The alloy tells what the alloy consists of...

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. 

One or more alloys:

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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