Grade 7 45 Boiling nil Grade 12 45, 50 Boiling nil Grade 7 50 Boiling 0.01 Ti-6-4 50 Boiling 7.92 Transage 207 50 Boiling 0.90 Ti-6-2-4-6 50 Boiling 0.62 Ti-3-8-6-4-4 50 Boiling 0.98 Ti-5Ta 50 Boiling 3.16 Ti-550 50 Boiling 0.02 Grade 12 90 Boiling 0.56 Grade 7 90 Boiling 0.056 Ti-550 0.5 Boiling 0.056 Ti-550 1.0 Boiling 0.64 Transage 207 0.5 Boiling 0.005 Transage 207 1.0 Boiling 0.025 Ti-6-2-4-6 0.5 Boiling nil Hydrochloric acid Ti-6-2-4-6 1.0 Boiling 0.03 Hydrochloric acid, aerated Ti-6-2-4-6 pH 1 Boiling 0.01 Ti-10-2-3 0.5 Boiling 1.10 Ti-3-8-6-4-4 0.5 Boiling 0.003 Hydrochloric acid Ti-3-8-6-4-4 1.0 Boiling 0.058 Ti-3-8-6-4-4 1.5 Boiling 0.26 Hydrochloric acid, aerated Ti-3-8-6-4-4 pH 1 Boiling nil Ti-5Ta 0.5 Boiling 0.013 Ti-5Ta 1.5 Boiling 2.10 Hydrochloric acid Ti-6-4 1.0 Boiling 2.52 Hydrochloric acid, aerated Ti-6-4 pH 1 Boiling 0.60 Grade 9 0.5 Boiling 1.08 Grade 9 1 88 0.009 Hydrochloric acid Grade 9 3 88 3.10 Grade 7 3 82 0.013 Grade 7 5 82 0.051 Hydrochloric acid, deaerated Grade 7 10 82 0.419 Hydrochloric acid Grade 9 1 Boiling 2.79 Hydrochloric acid, aerated Grade 9 5 35 0.001 Hydrochloric acid, nitrogen saturated Grade 9 5 35 0.185 Ti-6-2-1 8 0.5 Boiling 0.020 Ti-6-2-1 8 1.0 Boiling 1.07 Grade 7 0.5 Boiling nil Grade 7 1.0 Boiling 0.008 Grade 7 1.5 Boiling 0.03 Hydrochloric acid Grade 7 5.0 Boiling 0.23 Grade 12 0.5 Boiling nil Grade 12 1.0 Boiling 0.04 Grade 12 1.5 Boiling 0.25 Grade 7 1-15 25 <0.025 Grade 7 20 25 0.102 Grade 7 5 70 0.076 Grade 7 10 70 0.178 Grade 7 15 70 0.33 Grade 7 3 190 0.025 Grade 7 5 190 0.102 Hydrochloric acid, hydrogen saturated Grade 7 10 190 8.9 Grade 7 3, 5 190 0.127 Hydrochloric acid, oxygen saturated Grade 7 10 190 9.3 Grade 7 3, 5 190 <0.03 Hydrochloric acid, chlorine saturated Grade 7 10 190 29.0 Grade 7 1, 5 70 <0.03 Grade 7 10 70 0.05 Hydrochloric acid, aerated Grade 7 15 70 0.15 Hydrochloric acid + 4% FeCl 3 + 4% MgCl 2 Grade 7 19 82 0.49 Hydrochloric acid + 4% FeCl 3 + 4% MgCl 2 , chlorine saturated Grade 7 19 82 0.46 Hydrochloric acid +5 g/L FeCl 3 Grade 7 10 Boiling 0.279 +16 g/L FeCl 3 Grade 7 10 Boiling 0.076 +16 g/L CuCl 2 Grade 7 10 Boiling 0.127 +2 g/L FeCl 3 Grade 12 4.2 91 0.058 +0.2% FeCl 3 Grade 9 1 Boiling 0.005 +0.2% FeCl 3 Grade 9 5 Boiling 0.033 +0.2% FeCl 3 Grade 9 10 Boiling 0.305 +0.1% FeCl 3 Grade 9 5 Boiling 0.008 +0.1% FeCl 3 Ti-550 5 Boiling 0.393 +0.1% FeCl 3 Transage 207 5 Boiling 0.048 +0.1% FeCl 3 Ti-6-2-4-6 5 Boiling 0.068 +0.1% FeCl 3 Ti-10-2-3 5 Boiling 0.008 +0.1% FeCl 3 Ti-3-8-6-4-4 5 Boiling 0.018 +0.1% FeCl 3 Ti-5Ta 5 Boiling 0.020 +0.1% FeCl 3 Ti-6-4 5 Boiling 0.015 +0.1% FeCl 3 Ti-6-2-1 8 5 Boiling 0.051 +0.1% FeCl 3 Grade 7 5 Boiling 0.013 +0.1% FeCl 3 Grade 12 5 Boiling 0.020 Hydrochloric acid + 18% H 3 PO 4 + 5% HNO 3 Grade 7 18 77 nil Hydrogen peroxide pH 1 Grade 7 5 23 0.062 pH 4 Grade 7 5 23 0.010 pH 1 Grade 7 5 66 0.127 pH 4 Grade 7 5 66 0.046 +500 ppm Ca 2+ , pH 1 Grade 7 5 66 nil +500 ppm Ca 2+ , pH 1 Grade 7 20 66 0.76 Hydrogen peroxide, pH 1 + 5% NaCl Grade 7 20 66 0.008 Magnesium chloride Grade 7 Saturated Boiling nil Methyl alcohol Grade 9 99 Boiling nil Oxalic acid Grade 7 1 Boiling 1.14 Grade 9 10 Boiling 0.084 Nitric acid Grade 9 30 Boiling 0.497 Grade 12 25 25 0.019 Grade 12 30 25 0.056 Grade 12 45 25 0.157 Grade 12 8 52 0.02 Grade 12 13 52 0.066 Grade 12 15 52 0.52 Grade 12 5 66 0.038 Phosphoric acid, naturally aerated Grade 12 7 66 0.15 Grade 12 0.5 Boiling 0.071 Grade 12 1.0 Boiling 0.14 Grade 7 40 25 0.008 Grade 7 60 25 0.07 Grade 7 15 52 0.036 Grade 7 23 52 0.15 Grade 7 8 66 0.076 Grade 7 15 66 0.104 Grade 7 0.5 Boiling 0.050 Grade 7 1.0 Boiling 0.107 Grade 7 5.0 Boiling 0.228 Potassium hydroxide Grade 9 50 150 9.21 Seawater Grade 9 . . . Boiling nil Sodium chloride, pH 1 Grade 9 Saturated 93 nil Sodium fluoride pH 7 Grade 12 1 Boiling 0.001 pH 7 Grade 7 1 Boiling 0.002 Sodium hydroxide Grade 9 50 150 0.49 Sodium sulfate, pH 1 Grade 7 10 Boiling nil Grade 12 10 Boiling 11.6 Sulfamic acid Grade 7 10 Boiling 0.37 Grade 12 9 24 0.003 Grade 12 9.5 24 0.006 Grade 12 10 24 0.38 Grade 12 3.5 52 0.013 Grade 12 3.75 52 1.73 Grade 12 2.75 66 0.015 Grade 12 3.0 66 1.65 Grade 12 0.75 Boiling 0.003 Grade 12 1.0 Boiling 0.91 Grade 7 1.0 204 0.005 Grade 7 2.0 204 nil Grade 12 1.0 204 0.91 Sulfuric acid, naturally aerated Grade 9 0.5 Boiling 8.48 Grade 7 5 70 0.15 Grade 7 10 70 0.25 Grade 7 1, 5 190 0.13 Sulfuric acid, nitrogen saturated Grade 7 10 190 1.50 Sulfuric acid, oxygen saturated Grade 7 1-10 190 0.13 Grade 7 10 190 0.051 Sulfuric acid, chlorine saturated Grade 7 20 190 0.38 Sulfuric acid, nitrogen saturated Grade 7 10 25 0.025 Grade 7 40 25 0.23 Sulfuric acid, aerated Grade 9 5 35 0.025 Sulfuric acid, nitrogen saturated Grade 9 5 35 0.405 Ti-3-8-6-4-4 1 Boiling nil Sulfuric acid, naturally aerated Ti-3-8-6-4-4 5 Boiling 1.85 Grade 7 10 70 0.10 Sulfuric acid, aerated Grade 7 40 70 0.94 Sulfuric acid + 5 g/L Fe 2 (SO 4 ) 3 Grade 7 10 Boiling 0.178 Sulfuric acid + 16 g/L Fe 2 (SO 4 ) 3 Grade 7 10 Boiling <0.03 Sulfuric acid + 16 g/L Fe 2 (SO 4 ) 3 Grade 7 20 Boiling 0.15 Sulfuric acid + 15% CuSO 4 Grade 7 15 Boiling 0.64 Sulfuric acid + 3% Fe 2 (SO 4 ) 3 Ti-3-8-6-4-4 50 Boiling <0.03 Sulfuric acid + 1 g/L FeCl 3 Ti-3-8-6-4-4 10 Boiling 0.15 Sulfuric acid + 50 g/L FeCl 3 Ti-3-8-6-4-4 10 Boiling 0.05 Sulfuric acid + 1% CuSO 4 Grade 7 30 Boiling 1.75 Sulfuric acid + 100 ppm Cu 2+ + 1% thiourea (deaerated) Grade 7 1 100 nil Sulfuric acid + 100 ppm Cu 2+ + 1% thiourea (deaerated) Grade 12 1 100 0.23 Sulfuric acid + 1000 ppm Cl - Grade 7 15 49 0.015 Source: Ref 13, 26, 68, 80, 109, 133, 138 References 1. R.W. Schutz, Titanium, in Process Industries Corrosion The Theory and Practice, National Association of Corrosion Engineers, 1986, p 503 2. "Titanium and Its Alloys," Course 27, Lesson 3, Metals Engineering Institute, American Society for Metals 3. Aerospace Structural Metals Handbook, Mechanical Properties Data Center, U.S. Department of Defense, 1985 4. F. Schwartzberg, F. Holden, H. Ogden, and R. Jaffee, "The Properties of Titanium Alloys at Elevated Temperatures," TML Report 82, Titanium Metallurgical Laboratory, Battelle Memorial Institute, Sept 1957 5. M. Mote, R. Hooper, and P. Frost, "The Engineeri ng Properties of Commercial Titanium Alloys," TML Report 92, Titanium Metallurgical Laboratory, Battelle Memorial Institute, June 1958 6. Titanium Alloys Handbook, MCIC-HB- 02, Metals and Ceramics Information Center, Department of Defense Information Analysis Center, Dec 1972 7. Handbook on Materials for Superconducting Machinery, MCIC-HB- 04, Metals and Ceramics Information Center, Battelle- Columbus Laboratories, and Advanced Research Projects Agency and Cryogenics Division, National Bureau of Standards, Nov 1974 8. N.D. Tomashov and P.M. Altovskii, Corrosion and Protection of Titanium, Government Scientific- Technical Publication of Machine-Building Literature (Russian translation), 1963 9. V.V. Andreeva, Corrosion, Vol 20, 1964, p 35 10. M. Pourbaix, Atlas of Electrochemical Equilibria in Aqueous Solutions, National Association of Corrosion Engineers, 1974, p 217 11. R.W. Schutz, J.S. Grauman, and J.A. Hall, Effect of Solid Solution Iron on the Corrosion Behavior of Titanium, in Titanium Science and Technology, Proceedings of the Fifth International Conference on Titanium, Deutsche Gesellschaft fur Metallkunde E.V., 1985, p 2617-2624 12. L.C. Covington and R.W. Schutz, Effects of Iron on the Corrosion Resistance of Titanium, in Industrial Applications of Titanium and Zirconium, STP 728, American Society for Testing and Materials, 1981, p 163-180 13. R.W. Schutz and J.S. Grauman, Fundamental Corrosion Characterization of High- Strength Titanium Alloys, in Industrial Applications of Titanium and Zirconium: Fourth Volume, STP 917, American Society for Testing and Materials, 1986, p 130-143 14. J. Newman, Fighting Corrosion With Titanium Castings, Chem. Eng., June 4, 1979 15. J.P. Dippel, Manufacturing Titanium Castings for the Pump Industry, World Pumps, Dec 1982 16. R.W. Schutz and L.C. Covington, Guidelines for Corrosion Testing of Titanium, in Industrial Applications of Titanium and Zirconium, STP 728, American Society for Testing and Materials, 1981, p 59-70 17. S.W. Dean, Jr., Electrochemical Methods of Corrosion Testing, in Electrochemical Techniques for Corrosion, National Association of Corrosion Engineers, 1977, p 52-60 18. E.L. Liening, Electrochemical Corrosion Testing Techniques, in Process Industries Corrosion, National Association of Corrosion Engineers, 1986, p 85-122 19. M.G. Fontana and N.D. Greene, Corrosion Engineering, McGraw-Hill, 1967 20. J.C. Griess, Jr., Crevice Corrosion of Titanium in Aqueous Salt Solutions, Corrosion, Vol 24 (No. 4), April 1968, p. 96-109 21. L.C. Covington, Pitting Corrosion of Titanium Tubes in Hot Concentrated Brine Solutions, in Galvanic and Pitting Corrosion Field and Laboratory Studies, STP 576, American Society for Testing and Materials, 1976, p. 147-154 22. B.J. Moniz, Field Coupon Corrosion Testing, in Process Industries Corrosion The Theory and Practice, National Association of Corrosion Engineers, 1986, p 67-83 23. M. Kobayashi et. al., Study on Crevice Corrosion of Titanium, in Titanium '80 Science and Technology, Vol 4, The Metallurgical Society, 1980, p 2613-2622 24. R.B. Diegle, "Electrochemical Cell For Monitoring Crevice Corrosion in Chemical Plants," Paper 154, presented at Corrosion/81, Toronto, Canada, National Association of Corrosion Engineers, April 1980 [...]... pH 8 20 98 210 >1.3 >50 pH 8 Ammonium oxalate 100 100 212 . Hydrochloric acid, aerated Ti- 6-2 - 4-6 pH 1 Boiling 0.01 Ti-1 0-2 -3 0.5 Boiling 1 .10 Ti- 3-8 - 6-4 -4 0.5 Boiling 0.003 Hydrochloric acid Ti- 3-8 - 6-4 -4 1.0 Boiling 0.058 Ti- 3-8 - 6-4 -4 1.5 Boiling 0.26 Hydrochloric. FeCl 3 Ti-1 0-2 -3 5 Boiling 0.008 +0.1% FeCl 3 Ti- 3-8 - 6-4 -4 5 Boiling 0.018 +0.1% FeCl 3 Ti-5Ta 5 Boiling 0.020 +0.1% FeCl 3 Ti- 6-4 5 Boiling 0.015 +0.1% FeCl 3 Ti- 6-2 -1 8 5 Boiling. acid, aerated Ti- 3-8 - 6-4 -4 pH 1 Boiling nil Ti-5Ta 0.5 Boiling 0. 013 Ti-5Ta 1.5 Boiling 2 .10 Hydrochloric acid Ti- 6-4 1.0 Boiling 2.52 Hydrochloric acid, aerated Ti- 6-4 pH 1 Boiling 0.60