STP646-EB/Jun. 1978
Index
New York Harbor, 117, 121, 123
(not ASTM),
Aluminum coated steel
Panama Canal Zone
Advantages, 166, 174, 175
Coco Solo Nava] Station, 60
Disadvantages
Fort Sherman, 59
Cut edge staining, 166
Point Reyes, Calif., 108
Coating weight, 166
WrightsvUle Beach, N.C., 100
Adverse effect on steel strength, Atmospheric exposure tests by com166
mittees
Aluminum-zinc-coated steel
Coated hardware, sheets, wire,
New alloy evaluation
130
Salt spray test, 168
Corrosion of metals
Atmospheric exposure, 168, 174
Current programs, 135, 136,
Corrosion mechanism, 180, 182
138, 139
Effect of aluminum content on
Die cast metals, 133
Microstructure, 173
Electrodeposited coatings, 134
Performance in different enIron-chromium-nickel alloys, 132
vironments, 171
Light metals, 134
Phase diagram, 172
Malleable iron castings, 132
Salt spray test, 170
Nonferrous
metals, 132, 133
Atmospheric exposure of plating
Nonferrous
screens, 135
systems
Paints,
134,
135
Stationary exposure, 127
Sandwich
construction,
134
Mobile exposure
Truck, 116
Tugboat, 117
Atmospheric exposure sites, ASTM
Copper
Jurisdiction
Accelerated atmospheric testing
Brazos River, Freeport, Tex., 107
Alloy evaluation, 159, 161
Columbus, Ohio, 109
Apparatus, ACCT, 163, 164
Detroit, Mich., 117, 121, 122
Architectural finishes
East Chicago, Ind., 85, 86, 90,
Inorganic
110
Natural patinas, 153, 186
Kearny, N.J., 108
Synthetic patinas, brochantite,
New York City (Newark, N.J.), 17
conditions, 153, 154
225
Copyright
1978 by A S T M International
www.astm.org
226
ATMOSPHERIC FACTORS AFFECTING ENGINEERING METALS
Test sites, 156
Microcracked chromium, 118,
Organic lacquers
124
Maintenance, 157
Microdiscontinuous chromium,
Inhibited acrylic, 157, 158
127
Atmospheric corrosion
Exposure sites
Environments
Atmospheric parameters
Arid, industrial, marine,
Cold sky, 9
rural, 186, 187, 190,
Dew formation, 10, 11
194, 195
Relative humidity, 7, 8, 10, 38
Contact resistance, 49
Characterizing, 12, 13, 15
Diffusion transport, 49, 53, 54
Time-of-wetness meter
Electrical contact corrosion, 48
Description, 6, 11, 15
Gold plating
Detectors
Grain size, 53
Gold-zinc, 15
Platinum-zinc, 6, 7, 11, 15
Annealing temperatures, 50, 52,
Test panel
53,55
Grain boundary, 49
Radiant emissivity, 11
Laminar composites
Wetness time, 7, 11, 15
Copper-clad stainless steel, 190,
191, 197, 198, 200
Rating system, 192, 193
Flamespraying (thermal spraying)
Galvanic pitting, 199
Aluminum, 100, 103
Galvanic tunneling, 199
Sealers
Metallic barriers for circuits
Platinum, 51, 52, 54
Cobalt, 51, 53, 54
Chlorinated rubber, 102, 112
Cobalt-phosphors, 52, 53, 56
Chromium, 51, 53, 54
Composition, 111, 112
Nickel, 51, 53, 54
Zinc, 100, 103
Nickel-phosphors, 52, 53
Panel coating systems for
Platinum, 51, 53, 54
Atmospheric exposure, 112,113
Rhodium, 51, 53, 54
Seawater exposure, 113, 114
Tin-nickel, 51, 53, 54
Specimen preparation
Blast cleaning materials. 111
E
Electroplating of
Zinc die castings with
Bright copper, 116, 117, 118
Bright nickel, 118, 119
Conventional chromium, 116,
122, 123
Crack-free chromium, 122, 123
Duplex nickel, 116, 117, 118,
119. 127
G
Galvanic corrosion
Atmospheric of
Magnesium coupled with
Aluminum, 21-26
Brass, 21-26
Cadmium plated steel, 21-26
Carbon steel, 21-26
Galvanized steel, 21-26
INDEX
227
Monel, 21-26
Performance of test panels of
Nickel, 21-26
Hot-dip galvanized, 76
Stainless, Type 304, 21-26
Continuous coated, 76
Zinc, 21-26
Electrogalvanized, 76
Mixed couples, including aluPainted galvanized, 76
minum alloys, brass,
Painted steel, 76
carbon steel coupled
Results of
with aluminum, brass,
Visual examination, 79
carbon steel, Monel,
Weight loss determination, 80
titanium, stainless Type
Service life anticipated, 82
304
Results from
Atmospheric exposure, 61
Seawater immersion, 66,
67
Soil burial, 69
Laboratory test environment
Results of similar couples
Controlled environmental exAtmospheric exposure, 69
posure chamber, 30, 32
Seawater immersion, 70
Dew-light cycle
Soil burial, 69
Controls panel wetness, 38
Galvanic series based on
Effect
on "weathering steel" of
Galvanic couples with magSulfur
dioxide, 31, 34
nesium, 26
Nitrogen
dioxide, 31, 34
Test specimens of couples
Ozone,
34,
41,42
Disk-type, 17, 18, 59
Effect
of
gases
on zinc, 42
Plate-type, 59
Relationship
between
corrosion,
Galvanized steel
time
and
temperature,
Advantages
38,39
Atmospheric corrosion of
Results of analysis of variance of
Skyward surface, 83, 92
"Weathering steel" in polluted
Groundward surface, 83, 92
air, 36
Performance, 166, 174, 175
"Weathering steel" in clean air,
Disadvantages, 166
37
High temperature performance,
Zinc in polluted air, 44
166
Kinetic relationships, 84
Predictions of corrosion rates,
zinc, 94, 95, 96
Reactions of
Basic zinc carbonate, 92, 93
Zinc, 92
Stainless steel
Test sites for (see Atmospheric
Atmospheric corrosion rate, 196
exposure sites)
Polarization curves, 201
Galvanized steel highway posts
Summary of papers, 216
228
ATMOSPHERIC FACTORS AFFECTING ENGINEERING METALS
Zinc {see Galvanized)
Atmospheric calibration (U.K.)
with dry cell cans, 205
Benefits from costing techniques,
214
Location of exposure sites, 206,
208
Report on national grid map,
206, 213