**4.1 TiAl6V4 alloy**

Ti6Al4V is a widely used biomaterial for many medical applications (Biomet, 2009), (Oshida, 2007), (Bronzino, 2006). Experimental results show that the properties of full-dense Ti64 processed on EBM fulfill the corresponding norm for medical implants (ISO, 2010), (ASTM, 2010) and are even superior to casted titanium alloys (Table 1).


Table 1. Comparative view of Ti64 properties: Electron Beam Melting (EBM) vs wrought Ti64.

However, the important advantage of Additive Manufacturing is the capability of producing designed porous material that can be combined with solid material in a single implant. Hence, it is interesting to take a look at the properties of porous material made on EBM. According to a several studies (Petrovic, 2011), (Parthasarthy, 2010), the properties of porous Ti64 fabricated on EBM are comparable to commercially available materials (titanium foam, tantalum, etc.), even approaching to human bone properties as shown in Table 2. 1 <sup>2</sup> <sup>3</sup> <sup>4</sup>


Table 2. Comparative view of porous Ti64 properties: Electron Beam Melting (EBM) vs commercially available materials
