Cov lus qhia dav dav rau nickel-based alloys: Hastelloy S (UNS N06635)
Hastelloy S (tseem hu ua Alloy S), tsim los ntawm UNS N06635, yog nickel-based alloy nrog zoo thermal stability, tsis tshua muaj thermal expansion thiab oxidation tsis kam ntawm 1095 degree [2000 degree F]. Khaws lub zog thiab ductility tom qab kev laus ntawm 425 txog 870 degree [800 txog 1600 degree F]. Hastelloy S feem ntau yog siv rau hauv daim ntawv thov uas muaj cov cua kub cua kub hnyav uas cov khoom siv yuav tsum tswj lub zog, ductility thiab metallurgical kev ncaj ncees tom qab lub sij hawm raug, thiab yog dav siv los ua cov ntsaws ruaj ruaj hauv cov roj turbine xyaw uas nws cov coefficient qis ntawm thermal expansion kuj tseem ceeb heev.
Hastelloy S yog npib tsib xee-raws li kub-kub alloy tsim los ntawm nickel, molybdenum, chromium, cobalt thiab lwm yam khoom. Hastelloy S alloy muaj cov ntsiab lus nickel ntawm kwv yees li 62%. Hastelloy S yog cov khoom siv hluav taws xob kub-resistant npib tsib xee-raws li alloy zoo heev thermal stability, siab thermomechanical zog, oxidation kuj thiab kub txog li 2000 degree f (1093 degree). Nrog kev kho cua sov yooj yim, Hastelloy S yuav ua rau muaj kev kub ntxhov siab thiab thermal qaug zog.
Hom ntawm Hastelloy
Hastelloy B-3 nickel-molybdenum alloy muaj kev tiv thaiv corrosion zoo heev hauv kev txo qhov chaw
Ib qho kev hloov kho tshiab ntawm Hastelloy B-3: B-3 muaj corrosion kuj zoo heev rau hydrochloric acid ntawm qhov kub thiab txias
Hastelloy C-4: Zoo thermal stability, zoo toughness thiab corrosion kuj ntawm 650-1040 degree
Hastelloy C-22: Nws muaj cov khoom zoo dua corrosion thiab zoo heev hauv zos corrosion tsis kam tshaj C-4 thiab C-276 hauv oxidizing media.
Hastelloy C-276: Zoo tiv thaiv oxidation thiab nruab nrab txo corrosion, zoo heev tiv thaiv kev nyuaj siab corrosion
Hastelloy C-2000: Qhov zoo tshaj plaws corrosion-resistant alloy nrog zoo heev corrosion kuj nyob rau hauv oxidizing thiab txo qhov chaw
Hastelloy G-35: Ib qho khoom kho dua tshiab ntawm G-30, nws muaj kev tiv thaiv corrosion zoo dua thiab thermal stability, thiab muaj kev ua tau zoo hauv kev ua kom muaj zog oxidizing tov kua qaub nrog cov ntsiab lus chromium xws li phosphoric acid.
Hastelloy
Hastelloy feem ntau yog muab faib ua peb series: B, C, thiab G. Nws yog tsuas yog siv nyob rau hauv hlau-raws li CrNi los yog CrNiMo stainless hlau, non-metallic cov ntaub ntawv thiab lwm yam corrosive xov xwm.
Txhawm rau txhim kho corrosion kuj thiab kub thiab txias ua haujlwm ntawm Hastelloy, peb qhov kev txhim kho loj tau ua rau Hastelloy:
B series: B → B-3 (00ni70mo28) → B-3
C series: C → C-276 (00cr16mo16w4) → C-4 (00cr16mo16) → C-22 (00cr22mo13w3) → C-2000 (00cr20mo16)
G series: G →G-3 (00cr22ni48mo7cu) →G-30 (00cr30ni48mo7cu)
Cov ntaub ntawv siv dav tshaj plaws yog N06635 (B-3), N10276 (C-276), N06635 (C-22), N06455 (C-4), thiab N06985 (G -3)
