An electrochemical process for stripping corrosion and oxide products and oxidation resistant metallic coatings from a superalloy test sample comprising: Connecting the test sample to a lead of a power supply; Submerging a portion of the test sample into a bath of electrolytic stripping solution with a pH less than 1, wherein the stripping solution comprises: nitric acid (HNO 3) at a concentration from 2% to 20% by weight; hydrochloric acid (HCl) at a concentration from 1% to 10% by weight; and ammonium molybdate salt at a concentration from 0.2% to 3% by weight; water up to 100% by weight, Subjecting the test sample to combined cycles of anodic and cathodic polarisation steps for a period of time effective to strip the corrosion and the oxide products and oxidation resistant metallic coatings from the test sample, wherein anodic polarisation involves making the test sample the anode at a potential lower than +2 volts for 1 min to 2 hours and cathodic polarisation involves making the test sample the cathode at a potential higher than -1.5 volts for 1 minutes to 20 minutes; Measuring the open circuit potential (o.c.p.) before and after each at least one step of the combined cycle of polarisation to monitor the progress of the coating removal; Removing the test sample from the electrolytic stripping solution when the corrosion and oxide products and oxidation resistant metallic coatings are removed and the o.c.p. is close to that of the original superalloy test sample or the current value is getting closer to the passivation current value of the base material; Subjecting the test sample to a final cleaning and final rinsing step wherein the final cleaning step comprises i) placing the test sample in a chemical etching solution comprising a mixture from 40/60 to 60/40 in volume ratio of Hydrochloric acid (HCl) and Isopropyl Alcohol (C 3 H 8 O) with Copper Chloride salt (CuCl 2) at a concentration from 2 g/l to 20 g/l, for 1 to 60 min; and the final rinsing step comprises ii) rinsing the test sample in water at room temperature for at least 1 min. Connecting the test sample to a lead of a power supply; Submerging a portion of the test sample into a bath of electrolytic stripping solution with a pH less than 1, wherein the stripping solution comprises: nitric acid (HNO 3) at a concentration from 2% to 20% by weight; hydrochloric acid (HCl) at a concentration from 1% to 10% by weight; and ammonium molybdate salt at a concentration from 0.2% to 3% by weight; water up to 100% by weight, nitric acid (HNO 3) at a concentration from 2% to 20% by weight; hydrochloric acid (HCl) at a concentration from 1% to 10% by weight; and ammonium molybdate salt at a concentration from 0.2% to 3% by weight; water up to 100% by weight, Subjecting the test sample to combined cycles of anodic and cathodic polarisation steps for a period of time effective to strip the corrosion and the oxide products and oxidation resistant metallic coatings from the test sample, wherein anodic polarisation involves making the test sample the anode at a potential lower than +2 volts for 1 min to 2 hours and cathodic polarisation involves making the test sample the cathode at a potential higher than -1.5 volts for 1 minutes to 20 minutes; Measuring the open circuit potential (o.c.p.) before and after each at least one step of the combined cycle of polarisation to monitor the progress of the coating removal; Removing the test sample from the electrolytic stripping solution when the corrosion and oxide products and oxidation resistant metallic coatings are removed and the o.c.p. is close to that of the original superalloy test sample or the current value is getting closer to the passivation current value of the base material; Subjecting the test sample to a final cleaning and final rinsing step wherein the final cleaning step comprises i) placing the test sample in a chemical etching solution comprising a mixture from 40/60 to 60/40 in volume ratio of Hydrochloric acid (HCl) and Isopropyl Alcohol (C 3 H 8 O) with Copper Chloride salt (CuCl 2) at a concentration from 2 g/l to 20 g/l, for 1 to 60 min; and the final rinsing step comprises ii) rinsing the test sample in water at room temperature for at least 1 min.