Hastelloy C22 product introduction, corrosion resistance and anti-corrosion properties
Hastelloy C22 Overview
Hastelloy C22 se yon versatile nickel-chromium-molybdenum-tungsten alloy gen pi bon an jeneral korozyon rezistans 625.
Oksidizing anviwònman segondè chromium alyaj, ak Cr, Mo. W rive jwenn an optimize balans kristal estrikti Estab, ki jan jwenn alyo korozyon rezistans estabilite A dapre sa a gide ideology. C-22 te Cr, Mo, W kontni C{{1{1}} te atansyon ajiste nivo aktyèl la 2c ki rezistan pou oxidizing asid corrosion. Li tou satisfè kondisyon yo nan tanperati estabilite estabilite.
Hastelloy C22 menm jan ak klas
USA Hastelloy C22/N06022
Inivèsèl Alloy 22
Almay 2.4602
Inyon Ewopeyen NiCr21Mo14W
korozyon rezistans alyoy a trè oxidizing oxidizing siperyè C-276, men li sèten sèten tonbe Fe, ki amelyore amelyore alyaj a a sansibilizasyon te Anperè 760-982 degre fò diminye environment grav crevice crevice corrosion conditions. Resistance intergranular high tanperati se avantaj. Table 1 lis C%C{% 7b3}} ki se 16% enferyè C-276 (Mo). C-22 diminye Fe kontni, men a menm pwodwi chimik konpozisyon C-276%.
konpozisyon chimik
Nickel Ni balans
Chromium Cr 20.0-22.5
Iron 2.0-6.0}
Molybdenum 12.5-14.5
Tungsten W 2.5-3.5
Cobalt Mwens Mwens oswa egal 2.5
Carbon Mwens Less egal 0.015
ManganeseMN Mwens Less oswa egal 0.5
Silisyòm Si Mwens Less oswa egal 0.08
Sulfur S Mwens Less oswa egal 0.02
Phosphorus P Mwens Less oswa egal 0.02
Vanadium V Mwens Less egal 0.02
C{{0} alyaj segondè fòs ductility, segondè dite frèt frèt ak soude; dansite 8. 69 69 kafe m3, fonn 135 ak 138 degre . Table 2 2 lis chanm tanperati mekanik pwopriyete C{7{7}% solisyon trete eta a lis lis estanda estanda valè nan C{8}}% comparison. Nan jeneral. yield fòs C-22 C{{}}, dansite ti kras ki C{{11}%.7d%.mm3) The The & C{11}%.mm3 itilize nan C-22 nan jeni konsepsyon ka diminye epesè a materyèl, kidonk ekonomi materyèl ak diminye depans Gen gen gwo diferans nan engredyan ak pwodiksyon pwosesis C{% 7b16}} %ak C-276, pri yo fondamantaman menm bagay la.
Hastelloy C22 pwopriyete fizik pwopriyete
Dansite g/cm3 8.9
Melting point degree 1325-1370
C-22 se a Ni-Cr-Mo alyaj ekselan pitting korozyon korozyon crevice korozyon, intergranular korozyon ak estrès korozyon. ． tC{3{3}%gen chromium chromium chromium estrès ． tC{3{3}%gen chromium chromium estrès ． tC{3}}%gen chromium chromium estrès ． tC{3}} gen chromium chromium estrès ． tC{3{3}%gen chromium chromium estrès ． tC{3}} gen chromium chromium estrès ． tC{3}} gen chromi kontni. Sa a alloy alyo epè ak plis ki estab pwoteksyon kouch 2c siyifikativman amelyore li korozyon rezistans nan oxidizing anviwònman is apwopriye apwopriye chlorine, ipochlorite solisyon ak oksidizasyon asid (nitric asid). Lè tanperati a leve, C%C-22 alloy resist oxidation, carbonization sulfidation erosion halogen chromium. Se poutèt sa. Se poutèt sa. Se poutèt sa. .. C-22 se souvan itilize asye lining lining flue desulfurization systems. C-22 gen certain kantite ak W, ki rezistan korozyon pa diminye asid (dilute sulfuric asid ak hydroloric asid).
Minimòm mekanik pwopriyete nan Hastelloy C22 alyaj nan chanm tanperati
Alyaj estati Hastelloy C22
Tensile fòsσb/MPa 690
Yield fòs σp0.2/MPa 283
Elongation σ5 /% 40
Corrosion resistance of C{{0}} and Ni-Motif. Unlike the finished Hastelloy B series alloys, C-22 is suitable for use in mixed solutions that fluctuate between oxidizing and reducing properties. It is especially suitable for hydrochloric acid and sulfuric acid solutions mixed with strong oxidizing ions such as Fe" and Cu2+. Due to the extreme Low carbon content and balanced alloy ratio. The heat-affected zone after welding of C-22 is not sensitive to medium temperature sensitization. It is not easy to precipitate chromium carbides and intermetallic compounds at the grain boundaries. Compared with C-276, the heat-affected zone is improved It has the ability to resist intergranular corrosion. Therefore, the welding area of C-22 has almost the same properties as the base metal, and is suitable for many chemical processes in the welded state. C-276 and C-22 alloys are tested in ASTM after sensitization at 870 degree . G-28. Time-temperature sensitization (, I-]: 'S) curve of solution A, the intergranular corrosion depth on the right side of the curve exceeds 0. 05 mm.
Hastelloy C22 Korozyon Rezistans
Hastelloy C22 Alyoy se apwopriye divès kalite pwodwi chimik pwosesis gen oxidizing ak diminye Media. The molybdenum ak chromium kontni fè alloy alloy chloride ion erozyon, tungsten tungsten amelyore li korozyon resistance. Hastelloy C22 is materyèl ki rezistan korozyon mouye chlorine, hypochlorite ipoklorite dyoksid solisyon yo. Alloy gen siyifikatif korozyon rezistans high konsantrations of chloride salt solutions (t ferric chloride ak copper chloride).
Soude materyèl se Techalloy622 (ASME SFA 5.14 ERNiCrMo{3{3}%) soti nan American Technical Alloys. Sa Soude materyèl apwopriye a super alyo soude rantre nan rantre nan s Asye nickel. Base Base alloy oswa overlay soude asye materyèl . surfacing kouch sèvi korrozyon-rezistan kouch transisyon transition soude soude nickel ki baze sou konpoze asye plak plak. Lè soude Azòt ki gen ladan duplex duplex pursèl or austenitic pur asye ak niobium-ki gen soude materyèl, li ka mennen presipitasyon a nitwojèn konpoze ak a pwopriyete yo welding. In lòd evite sa a fenomèn nan 2c niobium-gratis soude materyèl C-22 alloy itilize soude materyèl.
