CORROSION RESISTANCE OF HASTEllOY®AllOYS - Haynes ...
CORROSION RESISTANCE OF HASTEllOY®AllOYS - Haynes ...
CORROSION RESISTANCE OF HASTEllOY®AllOYS - Haynes ...
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TYPICAL PENETRATION RATES IN CORROSIVE MEDIA, Mils (mm) Per Year<br />
)<br />
PHOSPHORIC HYDR<strong>OF</strong>LUORIC SODIUM<br />
ACID ACID HYDROXIDE<br />
10% 30% 50% 85% 5% 25% 45% 5% 25% 50%<br />
HAYNES® alloy No. 25<br />
Room Nil Nil Nil Nil<br />
150 deg. F 0.1<br />
0.1<br />
Nil<br />
0.1<br />
(66 deg. C) « 0.01) « 0.01) « 0.01)<br />
5.0 12 20<br />
(0.13) (0.30) (0.51 )<br />
- - -<br />
Nil Nil Nil<br />
Nil Nil Nil<br />
Boiling<br />
0.2 2.0 4.0 562<br />
«0.01) (0.05) (0.10) (14.3)<br />
- - - Nil - -<br />
')<br />
MULTIMET® alloy<br />
Room Nil Nil Nil Nil<br />
5.0 37 52<br />
(0.13) (0.94) (1.32)<br />
Nil Nil Nil<br />
150 deg. F<br />
Nil<br />
0.1 0.1 0.1 - - - Nil Nil Nil<br />
(66 deg. C) « 0.01) « 0.01) «0.003)<br />
Boiling<br />
0.1 0.3 3.0 303<br />
« 0.01) «0.01) (0.08) (7.70)<br />
- - - Nil - -<br />
)<br />
SULFURIC ACID<br />
2% 5% 10% 25% 50% 60% 77% 80% 85% 90% 96%<br />
HAYNES alloy No. 25<br />
Room Nil Nil Nil Nil Nil Nil Nil Nil Nil Nil Nil<br />
150 deg. F<br />
11<br />
Nil Nil<br />
30 29 55 61 91 123 104<br />
Nil<br />
(66 deg. C) (0.28) (0.76) (0.74) (1.40) (1.55) (2.31 ) (3.12) (2.64)<br />
Boiling<br />
49 52 92 203 >1000 >1000 >1000 >1000 >1000 735 318<br />
(1.24) (1.32) (2.34) (5.16) (>25.4) (>25.4) (>25.4) (>25.4) (>25.4) (18.7) (8.08)<br />
)<br />
<strong>CORROSION</strong> TEST SAMPLES<br />
Standard spool-type specimens are available for testing under actual plant<br />
conditions. Samples of wrought HASTELLOY§ alloys B-2, C-276, C-22, G-3,<br />
G-30, X, HAYNES® alloy No. 25 and MULTIMET® alloy are available from stock<br />
in the annealed condition.<br />
)<br />
As-welded specimens can be obtained from stock in all these alloys except<br />
MULTIMET® alloy. Corrosion test racks containing up to 20 samples of Cabot<br />
Wrought Products Division alloys and other metals are available for<br />
installation in any plant where corrosion is'a concern.<br />
To obtain corrosion coupons or test racks, contact your local Cabot<br />
Wrought Products Division sales representative or any of the locations shown<br />
on the back cover of this booklet.<br />
87