904 pā kila kilaHe ʻano ʻano kila kuhili ʻole austenitic me ka haʻahaʻa haʻahaʻa o ke kalapona a me ka alloying kiʻekiʻe i hoʻolālā ʻia no nā kaiapuni me nā kūlana corrosion paʻakikī.ʻOi aku ka maikaʻi o ka corrosion ma mua o 316L a me 317L, ʻoiai e noʻonoʻo ana i ke kumukūʻai a me ka hana.He waiwai maikaʻi no ke kālā.Ma muli o ka hoʻohui ʻana o 1.5% copper, he kūpaʻa maikaʻi ka corrosion e kūʻē i ka hoʻohaʻahaʻa ʻana i nā waikawa e like me ka sulfuric acid a me ka phosphoric acid.Loaʻa iā ia ke kūpaʻa ʻino maikaʻi loa i ka corrosion stress, pitting a me crevice corrosion i hoʻokumu ʻia e nā ion paʻakikī, a he kūpaʻa maikaʻi i ka corrosion intergranular.I loko o ka sulfuric acid maʻemaʻe i ka pae hoʻopaʻa ʻana o 0-98%, hiki ke kiʻekiʻe ka mahana lawelawe o 904L pā kila kila e like me 40 degere Fahrenheit.
I loko o ka waika maʻemaʻe i loko o ka pae hoʻopaʻa ʻana o 0-85%, maikaʻi loa kona kūpaʻa ʻana.I loko o ka ʻenehana phosphoric acid i hana ʻia e nā kaʻina wai, he hopena koʻikoʻi nā haumia i ka pale ʻana i ka corrosion.Ma waena o nā ʻano ʻakika āpau, ʻoi aku ka maikaʻi o ke kūpaʻa ʻana o ka 904L super austenitic stainless steel ma mua o ke kila kila maʻamau.I loko o ka oxidizing nitric acid ikaika, 904L stainless steel he haʻahaʻa haʻahaʻa ke kū i ka corrosion ma mua o nā kila i hoʻohui ʻia ʻaʻohe kālā.I loko o ka waika hydrochloric, hoʻohana i ka904L nā pā kila kilaua kaupalena ʻia i nā haʻahaʻa haʻahaʻa o 1-2%.
I loko o ka waika maʻemaʻe i loko o ka pae hoʻopaʻa ʻana o 0-85%, maikaʻi loa kona kūpaʻa ʻana.I loko o ka ʻenehana phosphoric acid i hana ʻia e nā kaʻina wai, he hopena koʻikoʻi nā haumia i ka pale ʻana i ka corrosion.Ma waena o nā ʻano ʻakika āpau, ʻoi aku ka maikaʻi o ke kūpaʻa ʻana o ka 904L super austenitic stainless steel ma mua o ke kila kila maʻamau.I loko o ka oxidizing nitric acid ikaika, 904L stainless steel he haʻahaʻa haʻahaʻa ke kū i ka corrosion ma mua o nā kila i hoʻohui ʻia ʻaʻohe kālā.I loko o ka waika hydrochloric, hoʻohana i ka904L nā pā kila kilaua kaupalena ʻia i nā haʻahaʻa haʻahaʻa o 1-2%.
| Papa | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| 904L | 0.020 ka nui | 2.00 max | 1.00 max | 0.040 ka nui | 0.030 ka nui | 19.00 – 23.00 | 4.00 – 5.00 ka nui | 23.00 – 28.00 | 1.00 – 2.00 |
Ka manawa hoʻouna: ʻOkakopa-30-2023