Alloy 725 bụ nnukwu mmiri ozuzo siri ike, nickel-base alloy nke na-enye nguzogide pụrụ iche na mgbawa nrụrụ corrosion na olulu izugbe na corrosion crevice n'ime ọnọdụ afọ siri ike.Site na nguzogide corrosion dị ka 625 ma dị elu karịa nke 718, a na-atụle 725 maka ngwa ebe gburugburu ebe ndị na-emebi emebi dị oke mkpa.Enwere ike nweta ike mkpụrụ (0.2% kwụsịrị) karịa 120 ksi (827 MPa) site na ịka nká na-enweghị ọrụ ọkụ ma ọ bụ oyi.Ike ike mmiri ozuzo dị mkpa karịsịa na ngwa ebe akụkụ buru ibu ma ọ bụ ọdịdị dị mgbagwoju anya na-egbochi ịrụ ọrụ ọkụ.
Alloy | % | Ni | Cr | Fe | Mo | P | Nb | C | Mn | Si | S | Al | Ti |
725 | Min. | 55.0 | 19.0 | itule | 7.0 | - | 2.75 | - | - | - | - | - | 1.0 |
Oke. | 59.0 | 22.5 | 9.5 | 0.015 | 4.0 | 0.03 | 0.35 | 0.2 | 0.01 | 0.35 | 1.7 |
Njupụta | 8.3 g/cm³ |
Ebe mgbaze | 1271-1343 ℃ |
Ọnọdụ | 0.2% Ike Mpụta | Ike tensile kacha | % elongation na 4D | % Mbelata Mpaghara | Brinell siri ike HB | HRC | |||
ksi | MPa | ksi | MPa | Ft.-lbs | J | ||||
Ngwọta ewepụrụ | 47 | 324 | 117 | 806 | 70 | 72 | - | - | 28 |
Ngwọta Anneeded + Agadi | 134 | 923 | 186 | 1282 | 33 | 51 | 87 | 118 | 35 |
Ogwe/Ogwe | Waya |
ASTM B 805, ASME Code Case 2217,Nkọwa SMC HA91, ASME Code Case 2217 | ASTM B805, koodu ASME 2217 |
•lron-nickel-chromium-molvbdenum-niobium alloy dabere, ezigbo nguzogide kemịkalụ dị iche iche na-emebi emebi.Nke ukwuu na-eguzogide corrosion, pitting, na nrụgide mgbawa na gburugburu ebe obibi nwere carbon dioxide, chlorine na hydrogen sulfide. pụtara ìhè corrosion eguzogide maka gburugburu nwere acidic chemicals.Ezi corrosion eguzogide brine na oké osimiri.
•Ezigbo nguzogide corrosion na ngwa okpomọkụ dị elu.dị ka mmepụta mmanụ na gas.ebe alloy nwere ezigbo nguzogide H2S corrosion.
Bearings na akụkụ ndị ọzọ maka akụrụngwa nke chọrọ nnukwu iguzogide kemịkalụ acidic ma ọ bụ gburugburu.Akụkụ ma ọ bụ equioment eji na ọnọdụ oke osimiri