Manufacturing – Casting methods - European Aluminium Association
Manufacturing – Casting methods - European Aluminium Association
Manufacturing – Casting methods - European Aluminium Association
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Al18Si (AA 391) Alloy Microstrucuture - Primary Si Imparts Wear Resistance<br />
Source: Mercury Marine Ltd.<br />
Typical AlSi8Cu (AA 380 microstructure), Hypoeutectic Al-Si plus Fe phases<br />
Special Purpose Al Die casting Alloys<br />
AlSi5 (AA C443)<br />
Rp0.2%=110 MPa, Rm =230 MPa, A5=9%<br />
Where exceptional ductility at moderate strength is required. Increased corrosion resistance<br />
(low Cu). (eg. steering wheels)<br />
AlSi12 (AA 413)<br />
Rp0.2%=140 MPa, Rm =300 MPa, A5=0.5-2%<br />
For intricate thin castings.<br />
AlSi17Cu4Mg (AA 390)<br />
Rp0.2%=240 MPa, Rm=280 MPa, A5=1%<br />
A hypereutectic wear-resistant alloy. Used for parent bore engine blocks, compressor parts,<br />
pulleys, brake shoes.<br />
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