Alloy 725 jẹ lile lile ojoriro, alloy-base nickel ti o funni ni atako ailẹgbẹ si fifọ ipata aapọn ati pitting gbogbogbo ati ipata crevice ni ipo lile ti ọjọ-ori.Pẹlu resistance ipata ti o jọra si 625 ati ti o ga ju ti 718 lọ, 725 ni a gbero fun awọn ohun elo nibiti awọn agbegbe ibajẹ to lagbara jẹ ibakcdun.Agbara ikore (0.2% aiṣedeede) loke 120 ksi (827 MPa) le ṣee gba nipasẹ ti ogbo laisi igbona tabi tutu ṣiṣẹ ṣaaju.Agbara líle ojoriro ṣe pataki ni pataki ni awọn ohun elo nibiti iwọn-nla-apakan tabi apẹrẹ intric ṣe idiwọ sisẹ gbona.
Alloy | % | Ni | Cr | Fe | Mo | P | Nb | C | Mn | Si | S | Al | Ti |
725 | Min. | 55.0 | 19.0 | iwontunwonsi | 7.0 | - | 2.75 | - | - | - | - | - | 1.0 |
O pọju. | 59.0 | 22.5 | 9.5 | 0.015 | 4.0 | 0.03 | 0.35 | 0.2 | 0.01 | 0.35 | 1.7 |
iwuwo | 8.3 g/cm³ |
Ojuami yo | 1271-1343 ℃ |
Ipo | 0.2% Agbara Ikore | Gbẹhin fifẹ Agbara | % Ilọsiwaju ninu 4D | % Idinku ti Area | Brinell líle HB | HRC | |||
ksi | MPa | ksi | MPa | Ft.-lbs | J | ||||
Ojutu Annealed | 47 | 324 | 117 | 806 | 70 | 72 | - | - | 28 |
Solusan Annealed + Ti ogbo | 134 | 923 | 186 | 1282 | 33 | 51 | 87 | 118 | 35 |
Pẹpẹ / Rod | Waya |
ASTM B 805, koodu ASME 2217,SMC sipesifikesonu HA91, ASME Code Case 2217 | ASTM B 805, ASME Code Case 2217 |
•lron-nickel-chromium-molvbdenum-niobium orisun alloy, ti o dara resistance to kan jakejado ibiti o ti ipata kemikali.Giga sooro si ipata, pitting, ati wahala wo inu ayika ti o ni erogba oloro, chlorine ati hydrogen sulfide.Outstanding ipata resistance fun awọn agbegbe ti o ni awọn ekikan kemikali.Good ipata resistance fun brine ati omi okun.
•Ti o dara ipata resistance ni ga otutu ohun elo.gẹgẹbi epo ati gaasi iṣelọpọ.ibi ti awọn alloy ni o ni ti o dara resistance to H2S ipata.
Biari ati awọn ẹya miiran fun ohun elo ti o nilo resistance giga si awọn kemikali ekikan tabi awọn agbegbe.Awọn ẹya tabi equioment ti a lo ni awọn ipo okun