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
Alkylphenol - boron - 197-205 92·96 E E - - in alkaylation, mixing and distillation processes liquid and vapor phase.
trifluoride complex
Alloy C=0.4 mpy
Allyl Chloride 100 75 24 E - - -
Alumina Hydrate - 140 60 B S - - plus phosphated alumina hydrate (60 0 Be H2S0 4 ), 65 percent alumina
hydrate, 75 percent Hl04
Aluminum Acetate All to B.P. to B.P. S S - -
Aluminum Brazing Flux - 800·1300 427·705 E S - - LiF, NaCI, NaF, specimens were alternately exposed to air and molten flux
over 10-day period
Aluminum Chloride 10-80 to B.P. to B.P. E - - - as in ethyl benzene production, isomerization, Friedel Crafts synthesis
Aluminum Chloride 90 125 52 E - - - plus HCI at 250 psi
Sludge 90 250 121 E - - -
Aluminum Chloride - 360 182 - S - - AICIJ 85%, NaCI 12%, AI20J 3%, FeCIJ 700 ppm initially. AICIJ 35-60%,
NaCI 8·9%, AI 20J 30·55%, FeCIJ 0.5·1.5% final
Aluminum Chloride S~tr. Soln. B.P. B.P. B U - - no aeration
Aluminum Fluoride 10 75 24 - S - -
Aluminum Fluoro Sulfate 15 60-80 16-27 S E - - AIl 4 S0 4 to pH =2.3. Alloy C=0.4 mpy
Aluminum Fluoro Sulfate 15·35 180-235 82·113 U B - - Alloy C=24 mpy
Aluminum Potassium 10 to 175 to 79 - S - -
Sulfate (Alum)
Aluminum Sodium Sulfate 10 to B.P. to B.P. - S - -
Aluminum Sulfate 10 to 130 to 54 - E - -
10 175-B.P. 80-B.P. - S - -
15 120 49 - E - -
20* to 130 to 54 S E - - *paper makers alum
20 175-B.P. 80·B.P. - S - -
30 B.P. B.P. - S - -
40 B.P. B.P. - S - -
50 130-B.P. 54-B.P. - E - -
55 100 38 - E - -
Aluminum Sulfate 29·58 195-250 91·121 E - - - in coil descaling. Plus 0.01 percent ferric and 0.03 percent ferrous ions as
Fe20J, trace Cr20J' Occasional exposure to NaOH cleaning solution
Amines 30 250 121 E E E E 30% lactam, 20% organic acid, pH 10-11, polymerization kettle, 62 days
Amines - 257 125 - E - E hot wash liquid. Reaction product of diphenylamine and acetone in HBR
catalyst after addition to 50% NaOH to yield pH of 12-14. Moderate
aeration
Amines (Secondary 80-85 160 71 - E E E dissolved in isopropyl alcohol. Methyl chloride added to MNTN press and
of Tallow)
73% NaOH to keep neutral. Manufacture of fabric softener. Air free.
Agitation violent, 251 days
Amine Hydrochlorides 30 290-360 143-182 B U G S ammonia 20%, water 50%. Liquid phase. 25.2 days, no agitation or
aeration
Amine Hydrochlorides 30 290-360 143-182 - U - E ammonia 20%, water 50%. Liquid phase.
Amine Hydrochlorides 30 360 182 B U G G ammonia 20%, water 50%
Amine Hydrochlorides 40 302·482 150·250 - U U U ammonia 20%, water 40%,4 days, agitation> 4ft/sec, aeration - none
Amine Hydrochlorides 40 302-482 150-250 - U - G ammonia 20%, water 40%. Liquid phase.
Amine Hydrochlorides - 482 250 - U U U
-
3-Aminopyridine 3 144 62 - E - E 3.25% NaOCI, 2% NaOH, 10% NACL, 69% H20, Balance inerts. pH 14;
production of 3-Aminopyridine; Agitation - none; Air free; 74 days
Ammonia 12 80-90 26-32 G S - - plus 7 percent carbon dioxide and water in ammonia recovery stripper in
urea plant.
Ammonia 27 122-194 50-90 - E E E 6% CO2, 66% water vapor (all by vol.), 131 days, test in heat exchanger,
vapor zone. Aeration - slight, Ag;tation - slight
Ammonia 27 185 85 - E E E carbon dioxide 6%, water vapor 66%, air 0.5-1 %, all by volume
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 Point
9