{"id":6671,"date":"2024-09-12T08:20:23","date_gmt":"2024-09-12T08:20:23","guid":{"rendered":"https:\/\/haynesintl.com\/?page_id=6671"},"modified":"2024-09-12T08:22:03","modified_gmt":"2024-09-12T08:22:03","slug":"sulfidation-chlorine-environment-resistance-of-high-temperature-alloys","status":"publish","type":"page","link":"https:\/\/haynesintl.com\/en\/sulfidation-chlorine-environment-resistance-of-high-temperature-alloys\/","title":{"rendered":"Sulfidation & Chlorine Environment Resistance of High-temperature Alloys"},"content":{"rendered":"\n

Corrosion Resistance in Aggressive Industrial Environments<\/h2>\n\n\n\n

Sulfidation Resistance<\/h3>\n\n\n\n

The following test results were generated by exposing alloy coupons in a gas mixture consisting of 5% hydrogen, 5% carbon dioxide, 1% carbon monoxide, 0.15% hydrogen sulfide, and the balance argon. Exposures were at the temperatures and for the times shown. Average metal affected was determined metallographically by adding the observed metal loss, or thinning, to the observed average depth of internal sulfide penetration. This is a severe test, with sulfur partial pressures ranging from 10-6 to 10-7, and oxygen partial pressures between 10-17 and 10-22.<\/p>\n\n\n\n

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\n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
\n Alloy <\/td>\n \n Average Metal Affected <\/td>\n <\/tr>\n
\n 1400\u00b0F (760\u00b0C) <\/td>\n \n 1600\u00b0F (870\u00b0C) <\/td>\n \n 1800\u00b0F (980\u00b0C) <\/td>\n <\/tr>\n
\n 215 h <\/td>\n \n 500 h <\/td>\n <\/tr>\n
\n \u2013 <\/td>\n \n mils <\/td>\n \n \u00b5m <\/td>\n \n mils <\/td>\n \n \u00b5m <\/td>\n \n mils <\/td>\n \n \u00b5m <\/td>\n \n mils <\/td>\n \n \u00b5m <\/td>\n <\/tr>\n
\n 6B <\/td>\n \n 1.5 <\/td>\n \n 38 <\/td>\n \n 2.5 <\/td>\n \n 64 <\/td>\n \n 3.1 <\/td>\n \n 79 <\/td>\n \n 4.2 <\/td>\n \n 107 <\/td>\n <\/tr>\n
\n HR-160\u00ae<\/sup> <\/td>\n \n 1.1 <\/td>\n \n 28 <\/td>\n \n 3.8 <\/td>\n \n 97 <\/td>\n \n 4.7 <\/td>\n \n 119 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n <\/tr>\n
\n 25 <\/td>\n \n 1.8 <\/td>\n \n 46 <\/td>\n \n 1.4 <\/td>\n \n 36 <\/td>\n \n 8.4 <\/td>\n \n 213 <\/td>\n \n 1.8 <\/td>\n \n 46 <\/td>\n <\/tr>\n
\n 188 <\/td>\n \n 3.3 <\/td>\n \n 84 <\/td>\n \n 2.9 <\/td>\n \n 74 <\/td>\n \n 14.9 <\/td>\n \n 378 <\/td>\n \n 1.9 <\/td>\n \n 48 <\/td>\n <\/tr>\n
\n 150 <\/td>\n \n 4.2 <\/td>\n \n 107 <\/td>\n \n 6.3 <\/td>\n \n 160 <\/td>\n \n 22.1 <\/td>\n \n 561 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n <\/tr>\n
\n 556\u00ae<\/sup> <\/td>\n \n 3.8 <\/td>\n \n 97 <\/td>\n \n 11.7 <\/td>\n \n 297 <\/td>\n \n 31.9 <\/td>\n \n 810 <\/td>\n \n 2.0 <\/td>\n \n 51 <\/td>\n <\/tr>\n
\n 617 <\/td>\n \n 10.8 <\/td>\n \n 274 <\/td>\n \n 8.7 <\/td>\n \n 221 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n >21.7 <\/td>\n \n >550 <\/td>\n <\/tr>\n
\n RA333 <\/td>\n \n 5.6 <\/td>\n \n 142 <\/td>\n \n 10.0 <\/td>\n \n 254 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n <\/tr>\n
\n 310 <\/td>\n \n 9.1 <\/td>\n \n 231 <\/td>\n \n 13.5 <\/td>\n \n 343 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n 7.4 <\/td>\n \n 188 <\/td>\n <\/tr>\n
\n HR-120\u00ae<\/sup> <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n 17.0 <\/td>\n \n 432 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n <\/tr>\n
\n 800H <\/td>\n \n 11.2 <\/td>\n \n 284 <\/td>\n \n 19.2 <\/td>\n \n 488 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n 23.2 <\/td>\n \n 589 <\/td>\n <\/tr>\n
\n 625 <\/td>\n \n 12.6 <\/td>\n \n 320 <\/td>\n \n >24.5* <\/td>\n \n >620* <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n <\/tr>\n
\n 230\u00ae<\/sup> <\/td>\n \n 12.6 <\/td>\n \n 320 <\/td>\n \n >21.7 <\/td>\n \n >550 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n <\/tr>\n
\n 214\u00ae<\/sup> <\/td>\n \n 16.7 <\/td>\n \n 424 <\/td>\n \n >17.7 <\/td>\n \n >450 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n >17.7 <\/td>\n \n >450 <\/td>\n <\/tr>\n
\n 600 <\/td>\n \n >21.7 <\/td>\n \n >550 <\/td>\n \n >21.7 <\/td>\n \n >550 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n >21.7 <\/td>\n \n >550 <\/td>\n <\/tr>\n
\n X <\/td>\n \n >29.5 <\/td>\n \n >750 <\/td>\n \n >21.7 <\/td>\n \n >550 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n >21.7 <\/td>\n \n >550 <\/td>\n <\/tr>\n
\n 601 <\/td>\n \n >29.5 <\/td>\n \n >750 <\/td>\n \n >21.7 <\/td>\n \n >550 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n >21.7 <\/td>\n \n >550 <\/td>\n <\/tr>\n
\n S <\/td>\n \n >29.5 <\/td>\n \n >750 <\/td>\n \n >29.5 <\/td>\n \n >750 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n \n \u2013 <\/td>\n <\/tr>\n <\/table>\n<\/div>