Alloy 725 wani hazo ne mai taurin hazo, gami da nickel-base alloy wanda ke ba da juriya na musamman ga lalata lalata da damuwa na gabaɗaya da ɓarnawar ɓarna a cikin yanayin ƙarancin shekaru.Tare da juriya na lalata kama da 625 kuma sama da na 718, ana ɗaukar 725 don aikace-aikace inda munanan lalata ke da damuwa.Ƙarfin yawan amfanin ƙasa (0.2% diyya) sama da 120 ksi (827 MPa) ana iya samun shi ta hanyar tsufa ba tare da aikin dumi ko sanyi ba.Ƙarfin tauraruwar hazo yana da mahimmanci musamman a aikace-aikace inda girman babban yanki ko siffa mai mahimmanci ya hana aiki mai dumi.
Alloy | % | Ni | Cr | Fe | Mo | P | Nb | C | Mn | Si | S | Al | Ti |
725 | Min. | 55.0 | 19.0 | daidaitawa | 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 |
Yawan yawa | 8.3g/cm³ |
Wurin narkewa | 1271-1343 ℃ |
Matsayi | 0.2% Ƙarfin Haɓaka | Ƙarfin Ƙarfin Ƙarfi | % Tsawaitawa cikin 4d | % Rage Yanki | Brinell taurin HB | HRC | |||
ksi | MPa | ksi | MPa | Ft.-lbs | J | ||||
Magani ya warware | 47 | 324 | 117 | 806 | 70 | 72 | - | - | 28 |
Magani ya Kashe + Tsofaffi | 134 | 923 | 186 | 1282 | 33 | 51 | 87 | 118 | 35 |
Bar/Rod | Waya |
ASTM B805, ASME Code Case 2217,Bayanin SMC HA91, Lambar lambar ASME 2217 | ASTM B805, lambar ASME 2217 |
•lron-nickel-chromium-molvbdenum-niobium tushen gami, mai kyau juriya ga nau'ikan sinadarai masu lalata.Mai tsananin juriya ga lalata, rami, da damuwa a cikin yanayin da ke ɗauke da carbon dioxide, chlorine da hydrogen sulfide.Fitaccen juriya na lalata ga muhallin da ke ɗauke da sinadarai na acidic.Good lalata juriya ga brine da ruwan teku.
•Kyakkyawan juriya na lalata a aikace-aikacen zafin jiki mai girma.kamar samar da mai da iskar gas.inda gami yana da kyau juriya ga H2S lalata.
Bearings da sauran sassa na kayan aiki waɗanda ke buƙatar babban juriya ga sinadarai na acidic ko muhalli.Abubuwan da ake amfani da su ko kayan aiki a yanayin teku