In recent years Aluminum-Silicone has become one of the most important alloys especially in wide range of light weigh applications. To facilitate the timely widespread utilization of this alloy it is important to have available an overall view on the metallurgical properties on this subject which is sufficiently detailed to provide a broad coverage and insight into the area and at the same time is sufficiently readable and thorough so that it can reach a wide audience of those who have a need to know the nature and prospects for the field.