ʻO ka ʻano mua he ʻano haʻahaʻa haʻahaʻa, e hōʻike ana i ka papa UNS S32304 (23Cr-4Ni-0.1N). ʻAʻole i loko o ke kila ka molybdenum, a ʻo ka waiwai PREN he 24-25. Hiki ke hoʻohana ʻia ma kahi o AISI304 a i ʻole 316 e pili ana i ke kūpaʻa corrosion koʻikoʻi.
ʻO ka lua o ke ʻano he ʻano alloy medium, ʻo ka helu ʻelele UNS S31803 (22Cr-5Ni-3Mo-0.15N), ʻo ka waiwai PREN he 32-33, a ʻo kona kūpaʻa corrosion ma waena o AISI 316L a me 6% Mo + N austenitic stainless. kila. ma waena.
ʻO ke kolu o ke ʻano he ʻano alloy kiʻekiʻe, maʻamau ka 25% Cr, loaʻa pū kekahi molybdenum a me ka nitrogen, a aia kekahi i ke keleawe a me ka tungsten. ʻO ka papa maʻamau ʻo UNSS32550 (25Cr-6Ni-3Mo-2Cu-0.2N), a ʻo ka waiwai PREN he 38-39 ʻO ke kūpaʻa corrosion o kēia ʻano kila ʻoi aku ka kiʻekiʻe ma mua o ka 22% Cr duplex stainless steel.
ʻO ka hā o ke ʻano he super duplex stainless steel type, nona ka molybdenum kiʻekiʻe a me ka nitrogen. ʻO ka papa maʻamau ka UNS S32750 (25Cr-7Ni-3.7Mo-0.3N), a aia kekahi i ka tungsten a me ke keleawe. ʻOi aku ka nui o ka waiwai PREN ma mua o 40, hiki ke hoʻohana ʻia no nā kūlana Medium koʻikoʻi, me ka pale ʻana i ka corrosion piha maikaʻi a me nā waiwai mechanical, hoʻohālikelike ʻia me ke kila stainless austenitic super.
Ka manawa hoʻouna: Jan-19-2020