In this work two types of metal sheets (with and without enamel coating) in contact with WC-Co tool were tested using five different base metal-working fluids (paraffinic and naphthenic oils of different viscosities and water). The results for metal sheet without enamel coating show that selection of base metal working fluid (MWF) is of the great importance for the friction performance of the metal sheet – WC-Co tool contact. Namely, improper selection of MWF can lead to deteriorating friction performance and extremely high coefficient of friction. On the other hand, the metal sheet with enamel coating has completely different friction performance due to the self-lubricating properties of the enamel coating that tailor the coefficient of friction for dry contact and contacts lubricated with MWF of low viscosity (LV). However, for high viscosity (HV) base MWF the lubricant prevails over enamel coating and govern friction performance of metal sheet – WC-Co tool contact.