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Laboratory

The chemical-physical characterization of aluminium alloys and of castings produced by the customer

S.A.V. S.p.A.

At the customers' service

S.A.V. S.p.A. reserves exclusively to its customers the support of its metallurgical laboratory capable of providing a rapid and effective feedback on metallurgical analysis aimed at characterizing casting defects and determining the causes of casting failure (Failure Analysis).
Upon customers request we are able to provide, for each produced batch, the mechanical properties of the material also after heat treatments carried out directly by S.A.V. S.p.A., in special laboratory ventilated ovens. In this way the customer can know the mechanical properties, such as elastic modulus, yield strength, tensile strength, elongation percentage and hardness of the material in the as-cast state or after heat treatment. The mechanical properties are determined, on separate casting test specimens, directly at S.A.V. S.p.A. laboratory, with a defined and controlled cooling condition in order to simulate the solidification conditions of the castings produced by the customer.
S.A.V. S.p.A. Società Alluminio Veneto
The competence of S.A.V. S.p.a. metallurgical laboratory

The internal metallurgical laboratory is able to carry out the following characterizations on aluminium alloys:
• determination of the chemical composition by spark-oes spectrometry;
• determination of metal density ;
• determination of density index;
• determination of the solidus and liquidus temperature through the thermal analysis technique (solidification curve);
• determination of metallic inclusion level through the Prefil technique;
• quantitative determination of non-metallic inclusions by analysis of Prefil filters (with automatically generated reports highlighting the inclusions detected by the filter analysis);
• determination of hydrogen dissolved in liquid aluminium using the Al-Scan technique;
• measurement of electrical conductivity;
• measurement of thermal conductivity;
• determination of the specific heat of the alloy;

S.A.V. S.p.A. Società Alluminio Veneto

• determination of Brinnel hardness in compliance with ISO 6506-1 and ASTM E10;
• determination of the mechanical properties at room temperature of the aluminium alloys: elastic modulus, yield strength, tensile strength and elongation in compliance with ISO 6892-1 and ASTM E8 / E8M standards;
• determination of the high temperature mechanical properties of aluminium alloys: elastic modulus, yield strength, tensile strength and elongation in compliance with ISO 6892-2 and ASTM E8 / E8M standards.

S.A.V. S.p.A. Società Alluminio Veneto

Morever, the following characterizations are carried out on the aluminium alloy castings:
• metallography by optical microscopy;
• determination of intermetallic phases dimensions through optical microscopy;
• determination of DAS (Dendrite Arm Spacing) and SDAS (Secondary Dendrite Arm Spacing);
• determination of the grain size;
• determination of the geometric parameters of the intermetallic phases through optical microscopy;
• classification of casting defects by analysis at optical microscope;
• mapping porosity in the castings through optical microscope with motorized table;
• quantification of the percentage of porosity present in the castings using an optical motorized stage microscope.

S.A.V. S.p.A. Società Alluminio Veneto