CORROSION RESISTANCE OF HASTEllOY®AllOYS - Haynes ...

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FACTORS FOR CONVERTING PENETRATION RATE INTO LOSS OF WEIGHT To convert penetration in mils per year into Loss in weight in g per cm 2 per hr., multiply by ... Loss in weight in mg per dm 2 per day, multiply by ... HASTELLOY® HASTELLOY HASTELLOY HASTELLOY HASTELLOY HAYNES® alloy alloy alloy alloys alloy alloy B-2 C-276 C-4 G-3/G-30 X No. 25 MULTIMET® alloy 0.00000267 0.00000258 0.00000250 0.00000240 0.00000238 0.00000264 0.00000237 6.42 6.19 6.01 5.78 5.73 6.35 5.71 To convert penetration in mm per year into Loss in weight in g per cm 2 per hr., multiply by ... Loss in weight in mg per dm 2 per day, multiply by ... HASTELLOY HASTELLOY HASTELLOY HASTELLOY HASTELLOY HAYNES alloy alloy alloy alloys alloy MULTIMET alloy alloy B-2 C-276 C-4 G-3/G-30 X No. 25 0.000105 0.000101 0.0000984 0.0000944 0.0000937 0.000104 0.0000933 252.64 243.87 236.75 227.71 225.51 250.18 224.69 BOILING POINTS IN DEG. F (DEG. C) VS. CONCENTRATION Concentration Percent by Weight MEDIA Hydrochloric Sulfuric Nitric Phosphoric Acetic Formic Acid Acid Acid Acid Acid Acid 10 219 (104) 215 (102) 217(103) 212 (100) 213 (101) 214 (101) 20 230 (110)** 219 (104) 222 (105) - - 215 (102) 30 - 226 (107) 228 (108) 215 (102) - 216 (102) 40 - 237(114) 234 (112) - - 218 (103) 50 - 253 (123) 242(117) 226 (107) 217 (103) - 60 - 284 (140) 249 (121) - - 222 (105) 65 - 304 (151) 251 (122) - - - 70 - 329 (165) 250 (121)* - - - 80 - 395 (202) - - - - 85 - 437 (225) - 316 (157)* - 222 (105)* 90 - 491 (255) - - - - 96 - 554 (290) - - - - 98 - 626 (330) * - - - - 99 - - - - 243(118)* - 84
CORROSION RESISTANCE OF HAYNES® ALLOY NO. 25 AND MULTIMET® ALLOY NOTE: The figures in the following tables were determined in laboratory tests, using ordinary laboratory reagents in glassware. As it is impossible to duplicate plant conditions by laboratory tests, it is obvious that these results cannot be translated directly into plant performance. However, they will serve as a guide for selecting an alloy for an application. All results are expressed in mils (mm) penetration peryear. Acid strengths are given in percent by weight. In some instances, no measurable penetration could be observed. These instances are noted by the word, "Nil." All data are steady-state as calculated from a minimum of five 24-hr. test periods. All data were obtained using corrosion specimens prepared from 12-gage, solution heat-treated sheet. TYPICAL PENETRATION RATES IN CORROSIVE MEDIA, Mils (mm) Per Year ACETIC ACID CHROMIC ACID FORMIC ACID 10% 99% 2% 20% 10% 89% HAYNES alloy No. 25 Room Nil Nil Nil Nil Nil Nil Nil 0.1 - 0.1 0.1 0.1 «0.01) «0.01) «0.01) « 0.01) 150 deg. F Nil Nil Nil 5.0 Nil 21 0.1 Nil - Nil Nil 0.1 (66 deg. C) (0.13) (0.53) «0.01) «0.01) Boiling 0.1 0.1 3.0 Nil 41 165 8.0 10 - 15 20 6.0 «0.01) «0.01) (0.08) (1.04) (4.19) (0.20) (0.25) (0.38) (0.51) (0.15) MULTIMET alloy Room Nil Nil Nil Nil Nil Nil Nil 0.1 - 0.1 0.1 «0.01) «0.01) «0.01) Nil 150 deg. F Nil Nil Nil 8.0 Nil 91 0.1 (66 deg. C) Nil (0.20) (2.31) «0.01) - Nil 0.1 « 0.01) Nil Boiling 0.1 0.1 0.1 6.0 358* >1000 4.0 6.0 - 8.0 6.0 3.0 «0.01) «0.01) «0.01) (0.15) (9.09) (>25.4) (0.10) (0.15) (0.20) (0.15) (0.08) *Rate is for the fifth (24-hour) test period, not steady state rate. CUPRIC CHLORIDE FERRIC CHLORIDE 5% + 10% + 5% + 2% 10% NaCI 10% NaCI 2% 10% NaCI 10% HAYNES alloy No. 25 Room Nil 0.2 «0.01) Nil Nil 150 deg. F (66 deg. C) Nil Nil Nil Nil Nil Boiling MULTIMET alloy 0.1 0.5 «0.01) «0.02) Nil Room Nil Nil Nil Nil 150 deg. F 160 193 >1000 Nil Nil (66 deg. C) (4.06) (4.90) (>25.4) ..../ Boiling 919 >1000 >1000 (23.3) (>25.4) (> 25.4) *Rate is for the fifth (24-hour) test period, not steady state rate. 85
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OUR NEW NAME Haynes International,
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COMPARATIVE CHEMICAL COMPOSITIONS,
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'A~0~A~~ Alloy / q,~ "'.>~~~Cfj 0.5
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Type 316 Concen- Temperature HASTEL
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Type 316 Concen- Temperature HASTEl
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Page 63 and 64: ISOCORROSION DIAGRAMS· HASTELLOY®
Page 65 and 66: ISOCORROSION DIAGRAMS* HASTELLOY®
Page 69 and 70: ISOCORROSION DIAGRAMS· r HASTELLOY
Page 71 and 72: PHOSPHORIC ACID ISOCORROSION DIAGRA
Page 75 and 76: ISOCORROSION DIAGRAMS· HASTELLOY®
Page 79 and 80: ACETIC AND FORMIC ACIDS Acetic and
Page 81 and 82: EFFECT OF TEMPERATURE ON PITTING RE
Page 83: CREVICE-CORROSION DATA IN 10% FERRI
Page 87 and 88: TYPICAL PENETRATION RATES IN CORROS
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