ʻO UNS NO8904, i ʻike nui ʻia ʻo 904L, he haʻahaʻa carbon high alloy austenitic stainless steel i hoʻohana nui ʻia i nā noi kahi i lawa ʻole ai nā waiwai corrosion o AISI 316L a me AISI 317L. Hāʻawi ʻo 904L i ke kūpaʻa chloride koʻikoʻi maikaʻi i ka ʻāʻī ʻana, ka pale ʻana i ka lua, a me ke kūpaʻa ʻino maʻamau i ʻoi aku ma mua o 316L a me 317L molybdenum i hoʻonui ʻia i nā kila stainless.