Alloy 725 imvura inoomesera, nickel-base alloy inopa kusarudzika kumisa kushushikana kwegora kutsemuka uye general pitting uye crevice corrosion muzera rakaomarara mamiriro.Nekupokana nekuora kwakafanana ne625 uye yepamusoro kune iyo ye718, 725 inotariswa kune maapplication apo nzvimbo dzinoparadza zvakanyanya dzinonetsa.Simba regoho (0.2% offset) pamusoro pe120 ksi (827 MPa) inogona kuwanikwa nekuchembera pasina kudziya kwekutanga kana kutonhora kushanda.Kunaya kwemvura kuoma kwakakosha mumashandisirwo apo saizi yechikamu chikuru kana chimiro chakaoma kunzwisisa chinodzivirira kushanda kunodziya.
Alloy | % | Ni | Cr | Fe | Mo | P | Nb | C | Mn | Si | S | Al | Ti |
725 | Min. | 55.0 | 19.0 | balance | 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 |
Density | 8.3 g/cm³ |
Melting point | 1271-1343 ℃ |
Status | 0.2% Goho Simba | Ultimate Tensile Simba | % Elongation mu4d | % Kuderedzwa kweNzvimbo | Brinell kuoma HB | HRC | |||
ksi | MPa | ksi | MPa | Ft.-lbs | J | ||||
Solution Yakanatswa | 47 | 324 | 117 | 806 | 70 | 72 | - | - | 28 |
Solution Annealed + Akwegura | 134 | 923 | 186 | 1282 | 33 | 51 | 87 | 118 | 35 |
Bar/Rod | Waya |
ASTM B 805, ASME Code Case 2217,SMC yakatarwa HA91, ASME Code Case 2217 | ASTM B 805, ASME Code Case 2217 |
•lron-nickel-chromium-molvbdenum-niobium based alloy, kupikisa kwakanaka kune zvakasiyana-siyana zvemakemikari anoparadza.Inopesana zvakanyanya nekuora, pitting, uye kushungurudzika kutsemuka munzvimbo ine carbon dioxide, chlorine uye hydrogen sulfide.Kunyanya kuonda kunopesana nemamiriro ezvinhu ane acidic chemicals.Good corrosion resistance for brine nemvura yegungwa.
•Good corrosion resistance pane yakakwirira tembiricha maapplication.zvakadai sekugadzirwa kwemafuta uye gasi.uko iyo alloy ine kumira kwakanaka kune H2S corrosion.
Bearings uye zvimwe zvikamu zvemidziyo inoda kupikisa zvakanyanya kumakemikari ane acidic kana nharaunda.Zvikamu kana equioment inoshandiswa mumamiriro egungwa