Pure aluminium is used in foundry industry to limited extent because it is difficult to mould and the alloy is not hard.
Aluminium alloys have better casting properties and are stronger.  The advantages of aluminium alloys are: small specific weight, good corrosion resistance, good casting possibilities, clean and smooth surface, non-magnetic.  Great advantage is low temperature of casting which enables castings production with high productivity (pressure casting and mould casting).  The elements that are most often used in the aluminium alloy:  Si, Cu, Mg, Zn and Mn. Regarding the base of alloy we distinguish several groups of alloys which are also our selling products.

DIN-230 D EN AB AlSi12(Fe)

EN AB - 44300SiFeCuMnMgZnTi
min. % 10,5 0,45 - 0,20 - - -
max. % 13,5 0,90 0,08 0,55 0,05 0,15 0,15
The rest: individual max. 0,05 / total max. 0,25

DIN-231 D EN AB AlSi12Cu1(Fe)

EN AB - 47100SiFeCuMnMgZnTiSnNiPbCr
min. % 10,5 0,60 0,70 - - - - - - - -
max. % 13,5 1,10 1,20 0,55 0,35 0,55 0,15 0,10 0,30 0,20 0,10
The rest: individual max. 0,05 / total max. 0,25

DIN-226 D EN AB AlSi9Cu3(Fe)

EN AB - 46000SiFeCuMnMgZnTiSnNiPb
min. % 8,00 0,60 2,00 - 0,15 - - - - -
max. % 11,00 1,10 4,00 0,55 0,55 1,20 0,20 0,25 0,55 0,35
The rest: individual max. 0,05 / total max. 0,25

DIN-239 D EN AB AlSi10Mg(Fe)

EN AB - 43400SiFeCuMnMgZnTiSnNiPb
min. % 9,00 0,45 - 0,20 0,25 - - - - -
max. % 11,00 0,90 0,08 0,55 0,50 0,15 0,15 0,05 0,15 0,15
The rest: individual max. 0,05 / total max. 0,15

 

 Oxide corticalOxidesCarbides
Al alloys H 3 O 2 K 2
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