I-alloy 725 yimvula eqina, i-nickel-base alloy enika ukuxhathisa okukhethekileyo kuxinzelelo lokuqhekeka kwe-corrosion kunye ne-pitting jikelele kunye ne-crevice corrosion kwi-age harden condition.Ngokumelana nokubola okufana ne-625 kwaye iphezulu kune-718, i-725 iqwalaselwa kwizicelo apho iindawo ezinobungozi kakhulu zixhalabisa.Amandla esivuno (0.2% offset) ngaphezu kwe-120 ksi (827 MPa) inokufumaneka ngokuguga ngaphandle kokusebenza kwangaphambili okufudumele okanye okubandayo.Isakhono sokuqina kwemvula sibaluleke kakhulu kwizicelo apho ubungakanani becandelo elikhulu okanye imilo entsonkothileyo ithintela ukusebenza ngokufudumeleyo.
Ingxubevange | % | Ni | Cr | Fe | Mo | P | Nb | C | Mn | Si | S | Al | Ti |
725 | Min. | 55.0 | 19.0 | ibhalansi | 7.0 | - | 2.75 | - | - | - | - | - | 1.0 |
Max. | 59.0 | 22.5 | 9.5 | 0.015 | 4.0 | 0.03 | 0.35 | 0.2 | 0.01 | 0.35 | 1.7 |
Ukuxinana | 8.3 g/cm³ |
Indawo yokunyibilika | 1271-1343 ℃ |
Ubume | 0.2% Amandla eSivuno | Ukomelela kokugqibela kokuqina | % Ubude kwi4d | % Ukuncitshiswa kweNdawo | Ukuqina kweBrinell HB | HRC | |||
ksi | MPa | ksi | MPa | I-Ft.-lbs | J | ||||
Isisombululo sichanelwe | 47 | 324 | 117 | 806 | 70 | 72 | - | - | 28 |
Isisombululo esine-Anealed + esidala | 134 | 923 | 186 | 1282 | 33 | 51 | 87 | 118 | 35 |
Ibha/Induku | Ucingo |
ASTM B 805, ASME Code Case 2217,Inkcazo ye-SMC HA91, i-ASME Code Case 2217 | ASTM B 805, ASME Code Case 2217 |
•I-lron-nickel-chromium-molvbdenum-niobium esekelwe kwi-alloy, ukuxhathisa okulungileyo kuluhlu olubanzi lweekhemikhali ezitshabalalisayo.Ukuxhathisa kakhulu kwi-corrosion, i-pitting, kunye nokuqhekeka koxinzelelo kwindawo equkethe i-carbon dioxide, i-chlorine kunye ne-hydrogen sulfide.Ukumelana nokugqwesa okugqwesileyo kweendawo ezineekhemikhali ezine-asidi.Ukumelana nokugqwesa okuhle kwe-brine kunye namanzi olwandle.
•Ukumelana ne-corrosion elungileyo kwizicelo zobushushu obuphezulu.ezifana nokuveliswa kweoli kunye negesi.apho i-alloy inokumelana kakuhle ne-H2S corrosion.
Iibheringi kunye nezinye iindawo zezixhobo ezifuna ukuxhathisa okuphezulu kwiikhemikhali ezine-acidic okanye iindawo ezisingqongileyo.Amalungu okanye i-equioment esetyenziswa kwiimeko zolwandle