I-Duplex Stainless Steel

I-Duplex stainless steel grade 2205 (eyaziwa nangokuthi i-UNS S31803/S32205, ASTM A240 Type 2205, Inox 2205, AISI 318LN, SUS 329J3L, noma EN 1.4462) iyisigaba sesibili esiqukethe cishe i-2–ferritic alloacyte chromium, 2.5–3.5% molybdenum, 4.5–6.5% nickel, futhi cishe 0.15% nitrogen. I-microstructure yayo elinganiselayo inikeza inhlanganisela eyingqayizivele yamandla aphezulu kanye nokumelana nokugqwala okuhle kakhulu. Isibonelo, ibanga elingu-2205 ngokuvamile linamandla aphindwe kabili ensimbi angu-316L, okuvumela abaklami ukuthi basebenzise izingxenye ezincane kakhulu, ezilula ngaphandle kokudela ukusebenza.

Ingxubevange ivamise ukunikezwa kusimo sokufakwa kwesixazululo (nge-ASTM A240/A240M ngayinye) ukuze kugcinwe ukwakheka okuhle kwe-duplex. IBanga 2205 lihlala liqinile kusukela emazingeni okushisa e-cryogenic (cishe -50°C) afinyelele cishe ku +300°C; ngale kwalolu hlu, isigaba se-brittle sigma singakheka kuma-welds. Lezi zakhiwo zenza i-duplex 2205 ibe ukukhetha okuhle kakhulu kwezicelo ezifunwayo ezifana nokucutshungulwa kwamakhemikhali, uwoyela negesi yasogwini, kanye nezindawo zasolwandle lapho kudingeka khona kokubili amandla aphezulu kanye nokumelana nokugqwala kwe-chloride.