Environmental Engineering Reference
In-Depth Information
Table 3.3
Alloy-environment combinations exhibiting stress corrosion cracking
Alloy
Environment
Aluminum alloys
Air with water vapor
Potable waters
Seawater
NaCl solutions
NaCl-H
2
O
2
solutions
Carbon steels
Caustic NaOH solutions
Calcium, ammonium, and sodium nitrate solutions
HCN solutions
Acidified H
2
S solutions
Anhydrous liquid ammonia
Carbonate/bicarbonate
CO/CO
2
solutions
Seawater
Copper alloys
Ammoniacal solutions
Amines
Nitrites
Nickel alloys
Caustic alkaline solutions
High-temperature chloride solutions
High-purity steam
Hydrofluoric acid
Acidic fluoride solutions
Stainless steels:
Austenitic
Hot acid chloride solutions
NaCl-H
2
O
2
solutions
NaOH-H
2
S solutions
Seawater
Concentrated caustic solutions
Neutral halides: Br
,I
,F
Austenitic (
sensitized
)
Polythionic acids (H
2
S
n
O
6
)
Sulfurous acid
Pressurized hot water containig 2 ppm dissolved oxygen
Ferritic
H
2
S, NH
4
Cl, NH
4
NO
3
Hypochlorite solutions
Martensitic
Caustic NaOH solutions
Titanium alloys
Red-fuming nitric acid
Hot salts, molten salts
N
2
O
4
Methanol/halide
