CORROSION RESISTANCE OF HASTEllOY®AllOYS - Haynes ...
CORROSION RESISTANCE OF HASTEllOY®AllOYS - Haynes ...
CORROSION RESISTANCE OF HASTEllOY®AllOYS - Haynes ...
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ISO<strong>CORROSION</strong> DIAGRAMS*<br />
HASTELLOY® Alloy C-276<br />
Resistance to Sulfuric Acid with 200 ppm Chloride Ions<br />
400<br />
Corrosion rates in parentheses are in mm/year.<br />
200<br />
~,.<br />
LL<br />
0 w<br />
0<br />
ui<br />
a:<br />
::> I--<br />
« a:<br />
w<br />
a..<br />
::2:<br />
w<br />
I--<br />
350 -- Sulfuric Acid<br />
___ Sulfuric Acid + 200 ppm CI- as NaCI<br />
o<br />
300 150 <br />
I-<br />
«<br />
a:<br />
100 ~<br />
::2:<br />
w I--<br />
150<br />
100<br />
---------- -",,<br />
\,<br />
" 5 mpy<br />
" (0.13)-------'*'<br />
, ~~-<br />
"...... 5 mpy . _ - -- - ----------------.,.<br />
---'(0.13)<br />
50<br />
o 10 20 30 40 50 60 70<br />
CONCENTRATION, WEIGHT PERCENT<br />
80 90 100<br />
HASTELLOY® Alloy C-276<br />
Effect of Ferric Ion Concentration on<br />
Corrosion Rate in Bolling 30% Sulfuric Acid<br />
1,000 ,..-------.---------.------.----.----..--.-..--r-r--.,--.----.-----.----r-.---r-..---------.----.--.-----.----r----,-,r-r-T"l<br />
400<br />
200<br />
it 100<br />
::2:<br />
ui<br />
«<br />
z<br />
o U5<br />
o a:<br />
a:<br />
I-- -<br />
a: 40<br />
-.-.-..........."'-<br />
=-__:e<br />
o o 10<br />
4 6 8 10 20 40 6080100 200400 6008001,000<br />
4<br />
2<br />
FERRIC ION CONCENTRATION, PPM<br />
•All test specimens were solution heat-treated and in the unwelded condition.<br />
76
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