CORROSION RESISTANCE OF HASTEllOY®AllOYS - Haynes ...

Type
316
Concen- Temperature HASTEllOY~ alloy Staintration,
less
Corrosive Media percent deg. F deg. C 8/8-2 C/C-276 G/G-3 Steel Conditions
Pyrogallic Acid All to B.P. to B.P. S S - -
Rayon - 122-167 50-75 - E - S rayon "spin" bath - 5-10% sulfuric acid; 1-8% zinc sulfate; 10-15%
sodium sulfate. Free carbon bisulfide present and saturated with
hydrogen sulfide. Amines and ethylene oxide condensation products
present to 1%.
Rayon - 208 98 - E - B rayon "cascade" bath - 1.5-5% sulfuric acid; 1-3% zinc sulfate; 10-15%
sodium sulfate; free carbon bisulfide present and saturated with
hydrogen sulfide.
Rayon Bleach - 210 99 - G - - plus 0.1 percent sodium chlorite, 0.03 percent sodium carbonate. 0.1
percent synthetic detergent, 0.035 percent H202, 0.07 percent acetic
acid. Alloy C= 3 mpy
It.!
Rayon Spin Bath - 125 52 E E - - 10 percent H2S04- spinning bleach, hardening etc. Vapor and liquid
phases.
Rayon Spin Bath - 100-210 38-99 S G - - extensive aeration. Alloy C= 4 mpy
Rayon Spin Bath - 122 50 - E - - 11 percent H2S04, 24 percent S04, saturated with H 2 S
Rayon Spin Bath, - Room Room - G - - in splash zone H2S0410 percent to less than 0.001 percent. From 0.500
Dilute
ppm of CS2 and H2S. Alloy C= 3 mpy
Rayon Spin Bath, - 203 95 S E - - H2S04= 0.25 percent, Na2S04 =0.25 percent in casting machine. Alloy C
Spent
= 0.1 mpy
Resin (Alkyd, Poly- - 25 ·4 E E - E sodium hydroxide cleaning solutions (6% boiling). Various raw materials
ester, Amine Types)
include phthalic and maleic anhydrides, isopthalic acid, glycerol, pentacrythritol;
linseed, soy, castor and tall oils, vinyltoluene, propylene and
ethylene and other glycols.
Rosin and Rosin Oil - 572 300 - E - - in boiling solution at still bottom and in vapors. Alloy C= 0.1 mpy
Rubber - 72 22 - E - - elastomer dissolved in aliphatic solvent to which bromine was added. pH
7.4, tested in absence of any light source, moderate aeration.
Rubidium 100 1400 760 S - - - lab test, 500 hrs., 1400°F-IG cracking, 1500°F-IG cracking, 1600°F-no
1500 815 B - - - cracking
1600 871 S - - -
Salicylic Acid - 77-258 25-126 U E - - production of acid. pH varies from 12 to 2. Alloy C= 1.73 mpy
Salt Water, Clean - 38 3 G E - E
Scrubbed Boiler - 120 49 - - E E 15% CO2, 3% 02, 400 ppm S02. NOX and fly ash being scrubbed in slurry
Fluegas
of 7% CaSOJ, 2% CaS04, .5% CaCO, pH 5. Scrubbing of S02 and fly ash
from power plant flue gas
Aeration - moderate
Agitation - 200,000 ACFM gas
Total days - 158
Scrubbed Boiler - 120 49 - E E E limestone slurry, 1750 ppm S02, 2·3% fly ash, 3% CaCO J , 2-3% CaSOJ
Fluegas
plus CAS04, pH 6-6.6, 2000-3000 ppm CI, moderate aeration
Scrubbed Boiler - 120 49 - - E E 15% CO2, 3% 02, less than 100 ppm S02' Liquid spray with some dissolved
Fluegas
solids present, pH 6- 7. Scrubbing of S02 and fly ash from power plant flue
gas.
Aeration - moderate
Agitation - by gas flow
Total days - 158
Scrubbed Boiler - 190 88 - E E E 0-400 ppm S02, 10% water vapor, fly ash after limestone slurry scrub-
Fluegas
bing, moderate aeration
Scrubber Effluent Gas ... - 110·115 43-46 - E E E aeration
Scrubber Environment - 300 149 - E E E for municipal refuse incinerator. Hot, acid chloride environment, pH
range about 1-6, extensive aeration
Scrubber Environment - 400 204 - E - E for municipal refuse incinerator. Hot, acid chloride environment, pH
range about 1-6, extensive aeration
Scrubbing Liquor - 120 49 - - E E 4.4% CaSOJ, 2.5% CaCOJ, 0.5% fly ash, 0.1 %CaS04, pH 6· 7. Scrubbing of
Boiler Fluegas
S02 and fly ash from power plant flue gas
Aeration - moderate
Agitation - by gas flow
Total days - 158
Scrubbing Liquor - 150 66 - E E E portable steam generator flue gases containing S02, NOX, N, CO2and O2,
Liquor alkaline oil field H20 with 5000 ppm CI, 21 days
E - Less than 2 mpy (0.05 mm/y)
G- 2 mpy (0.05 mm/y) to 10 mpy (0.25 mm/y)
S - Over 10 mpy (0.25 mm/y) to 20 mpy (0.51 mm/y)
B - Over 20 mpy (0.51 mm/y) to 50 mpy (1.27 mm/y)
U - More than 50 mpy (1.27 mm/y)
B.P. -
Boiling POlOt
40