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GLOSSARY NACE Glossary of Corrosion-Related Terms-..11 Glossary of Corrosion-Related Acronyms....33 Standard Abbreviations and Unit Symbols...... CONVERSION TABLES SI Quick Referenoe Guide .....41 International System of Units (Sl) ....42 Generall Conversion Factors.......... Metric and Decimal Equivalents of Fractions of an Inch ...... 46 Condensed Metric Practioe Guide for Corrosion ..... Corrosion Rate Relationships ....50 Temperature Conversions.....52 Stress Conversions.54 Approximate Equivalent Hardness Numbers and Tensile Strengths for Steel .56 Common Gage Series Used for Sheet Thickness ......58 Sheet GageThickness Conversions .59 PHYSICALAND CHEMICALDATA Physical Properties of Gases and Liquids..61 Physicall Properties of Elements .......62 Physical Properties of Water ...*64 Properties of Dry Saturated SteamEnglish Units ...... -SI Units66 Vapor Pressure of Water Below 100-C.........8 Dew Point of Moist Air ...69 Relative Humidities for Condensation.........74 Absolute Atmospheric Humidities.. 75 Vapor Pressure vs Temperature for Volatile Compounds ... 76 Approximate pH Values at 25 C...77 Boiing Points vs Concentration of Common Corrosive Media....77 pH Values of Pure Water at Different Temperatures .... Solubiity of Gases in Watef ......... 78 Solubility of Air in Water and Solvents79 Solublity ef Water in Hydrecarbons ..........80 Thermocouple Data81 CORROSION TESTING Hypothetical Cathodic and Anodic Polarization Diagram....- 82 Typical Cathodic and Anodic Polarizaftion Diagram ...
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Hypothetical Cathodic 8nd Anodic Polarization Plots for a Passive Anode ...84 Typical Standard Potentiostatic Anodic Polarization Plot... 85 Data for Tafel Equation Calculations...... 86 Hypothetical Polarization Resistance Plot...... Polarization Resistance Method for Determining Corrosion Rates....88 Values of the Constant B for the Polarization Resistance Method.89 Hydrogen Overvoltage on Various Electrode Materials...... 90 Standard Reference Potentials and Corversion Table.... 91 Electrochemical Series EMF Series for Metals86 Typical Potential-pH (Pourbaix) Diagram Iron in Water at 25 C.....99 Standard Erwironments for Environmental Cracking Tests... 100 Specimen Types Used in Environmental Cracking Tests.... 101 Typical High Temperature/High Pressure Tests Conditions... 102 Planned Interval Corrosion Test ....103 Corrosion Rate Conwersion Factors ....... Densiies of Cormmon Alloys ............. 105 Density ol Materials ....106 Equivalent Weight Values for Metals and Alloys ..........108 Corrosion Rate Calculation from Mass Loss....111 Values of Constants for Use in Faraday's Equstion..... 112 CORROSION EVALUATION Chemical Cleaning Procedures for Removal of Corrosion Products.*...... 113 Electrolytic Cleaning Procedures for Removal o Corrosion Products .......... Etchants for Revealing Microstructures in Alloys .118 Comparison of Surface Analysis Techniques ......120 Standard Rating Chart for Pits...121 Cross-Sectional Shape of Pits ...122 Standard Dot Patterns for Number of Pits Standard Coating Ratings Systems124 Rating of Painted Surlace......125 Abbreviations Describing Defects.126 Galranic Series of Metals .....
ATMOSPHERICCORROSION Environmental Polutants Causing Corrosion..128 Categories of Corrosivity of Atmospheres C) ....... 129 Classification of Time ot Wetness (T) -... 129
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Classificaltion of Pollution by Sulfure (P) ........ Classification of Pollution by Airborne Salinity (S) .129 Atmospheric Corrosion Rates for Corrosion Class ..... f30 Corrosion Classes for Environmental Classes.131 Classification of Atmospheric Test Sites by Environmental Category....132 Corrosion Loss of Flat Metal Specimens at Test Sites .... 134 Atmospheric Corrosion of Steel and Zine at Various Locations......... 136 Atmospheric Corrosion of Steel vs Time in an Industrial Atmosphere ...137 Corrosion of Structure Steel in Various Ervironmenits..... 138 Effect of Amount of Zinc on Service Life of Galvanized Sheet in Varfous Environments ............ Development of Rust on Zinc and Cadmium-Plated Steels in a Marine Atmosphere 140 Atmospheric Corrosion of Zinc in Various Locations as a. Funclion o Tie............. Lifetimes of Hot Dip Zine and Zinc-Alloy Coatings..-142 Atmospheric Corrosion of arious Metals and Alloys.... 142 Corresion of Copper Alloys in Marine Atmospheres Relative Performance of Stainless Steels Exposed in a Marine Atmosphere.......... SEAWATERAND COOLING WATER CORROSION The Major Constituents of Seawater ...145 Chemical Composition of Substitute Seawater .....145 Typical Seawrater Properties at Worldwide Sites ..-146 Environment/Deith Profle in the Gulf f Mexico .... 147 Specific Conductance of Seawater vs Temperature and Chloriniy.......-. 148 Corrosion Factors for Carbon Steel in Seawater149 Zones of Corrosion for Steel Piling in Seawafer ... Rates of General Wastage of Metals in Quiet Seawater......-.. 151 Corrosion Rate of Carbon Steel vs Depth....... Sugges...
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