925 (UNS N09925) me ka hoʻohui ʻana o ka molybdenum, keleawe, titanium, a me ka alumini he mea paʻakikī paʻakikī nickel-iron-chromium alloy, e hāʻawi ana i ka hui pū ʻana o ka ikaika kiʻekiʻe a me ke kūpaʻa maikaʻi loa. Hāʻawi ka maʻiʻo nickel lawa i ka pale ʻana i ka chloride-ion stress-corrosion crack aʻo ka hui pū ʻana me ka molybdenum a me ke keleawe i hoʻohui ʻia, hauʻoli ʻia ke kūʻē i ka hoʻohaʻahaʻa ʻana i nā kemika. Kōkua ka Molybdenum i ke kū'ē ʻana i ka lua a me ka crevice corrosion, ʻoiai ke hāʻawi nei ka chromium i ke kūʻē ʻana i nā kaiapuni oxidizing. I ka wā o ka hoʻomaʻamaʻa wela, hoʻoulu ʻia kahi hopena ikaika e ka hoʻohui ʻana o ka titanium a me ka alumini.
ʻO nā noi e koi ana i ka hui pū ʻana o ka ikaika kiʻekiʻe a me ka pale ʻana i ka corrosion e noʻonoʻo paha i ka Incoloy alloy 925. Kūʻē i ka sulfide stress cracking and stress-corrosion cracking in "sour" crude oil and natural gas environment, 'o ia hoʻi, hoʻohana ʻia ia no nā ʻāpana o lalo a me ka ʻili kino kino a me ka loaʻa ʻana o ka hoʻohana ʻana i nā kumu moana a me nā ʻauna paipu ikaika.
ʻO ka Hui Kemika o Incoloy 925 | |
---|---|
Nikela | 42.0-46.0 |
Chromium | 19.5-22.5 |
hao | ≥22.0 |
Molybdenum | 2.5-3.5 |
keleawe | 1.5-3.0 |
Titanium | 1.9-2.4 |
Alumium | 0.1-0.5 |
Manganese | ≤1.00 |
Silika | ≤0.50 |
Niobium | ≤0.50 |
Kalapona | ≤0.03 |
Sulfur | ≤0.30 |
Paʻa Paʻa, min. | Ka ikaika hua, min. | Elongation, min. | Ka paakiki, min. | ||
---|---|---|---|---|---|
Mpa | ksi | Mpa | ksi | % | HRC |
1210 | 176 | 815 | 118 | 24 | 36.5 |
ʻO ka mānoanoa | Lahui hehee | Wela Kūikawā | Kū'ē Uila | ||
---|---|---|---|---|---|
g/cm3 | °F | °C | J/kg.k | Btu/lb. °F | µΩ·m |
8.08 | 2392-2490 | 1311-1366 | 435 | 0.104 | 1166 |
ʻAno Huahana | Kūlana |
---|---|
Rod, bar & Uea | ASTM B805 |
Papa, pepa &kāʻei | ASTM B872 |
Paipu a me ka paipu ʻole | ASTM B983 |
Ke kalaiwa ana | ASTM B637 |