High Grade primary aluminium is quoted on London Metal Exchange (LME). Its contract specifies a minimun 99.7% purity, with maximum permissible iron content of 0.20% and maximum permissible silicon content of 0.10%.

The scrap copper are available in various types, identified by trade names (different from country to country) or international standards classifications (for example ISRI). Unlike other scrap metal, scrap copper have the same chemical and physical characteristics of the primary metal.

Aluminium for deoxidation (steel production) has 94% of minimum purity. On the market exists different forms: nuts, ingots, pyramids or wire rods.

The billets of aluminium may be primary or secondary. They can be in various wrought alloys (usually for extrusion), expressed with different standards: 6063, 6060, 6005, 6082, 1070, 1050, etc.

Primary Zinc SHG (Special High Grade) and 'listed on the London Metal Exchange and the agreement provides a minimum purity of 99,995% in compliance with the specific BS EN 1179:2003 (grade C1). It is in the form of bread and the minimum lot size is 25 ton.

Aluminium wire rods exists in different alloys (6101, 1070, 1050), in different diameters and with different mechanical properties. It is used in drawing or in deoxidation. There are different producers, brands and different lot sizes.

Magnesium alloys follow two categories: casting magnesium alloys and wrought magnesium alloys. They are in form of ingots and the standard lot size is 25 ton.

The pure lead is listed on the London Metal Exchange. The contract provides for a minimum purity of 99.97% aluminium, in accordance with the specifications BS EN 12659:1999. it is in the form of bread and the minimum lot size (warrant) and' 25 ton (with a tolerance of +/- 2%).

The scrap aluminium scrap silicon are usually a high percentage of silicon. This category includes all the die-silicon alloys: wheel rims, smudging, refuse to die, etc..

The process is used most is the casting, but there are other methods for the production of magnesium components, such as sand casting and permanent mold casting.

The scrap of zinc are identified by trade names differ from nation to nation or international standard classifications (such as ISRI).

The copper wire is used mainly in electric motors, transformers and toroidal windings. The minimum purity of 99.97% copper, in accordance with ASTM B49/92.

Metals are mainly used for the production of high-tech goods: electronic circuits, LCD components for hybrid cars, aircraft parts, componemti for missiles, military night vision devices, solar panels, nuclear reactors, etc. The list of applications is very long and branching out into many technological devices that pervade our lives. The rare metals are not listed on the commodity exchanges worldwide, but their prices are determined by the world's leading broker.