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Titanium Grade 2 is a material that is widely applied in biomedical implant materials. Titanium Grade 2 has a good corrosion resistance and good biocompatibility in the body. However, due to the low thermal conductivity, it is necessary to select the appropriate machining parameter in order to produce a good surface roughness value. The purpose of this study was to determine the surface characteristics of Titanium Grade 2 which include wettability and surface roughness on milling process. The research design used the full factorial L9 method, with 2 factors and 3 levels. The spindle speed variable has a p-value of 0.039 and the feeding speed variable has a p-value of 0.025. This shows that the two independent variables have a significant effect on the surface roughness response. The lowest surface roughness can be achieved by setting the spindle rotation at 700 rpm and the feed speed at 25 mm/min. All specimens showed contact angle measurement results below 90ᵒ, which means hydrophilic. Titanium Grade 2 material with this milling machining process can be used as an alternative to semi-permanent implant fabrication methods such as maxillofacial bone implants, bones of the fingers and toes, and others.

Analysis of Wettability and Surface-Roughness of Titanium Grade 2 in Milling Process