2205 (ASTM A276; EN 1.4462; JIS SUS2205) ua ke austenitic thiab ferritic microstructures:
Chemistry: 21-23% chromium, 4.5-6.5% npib tsib xee, 2.5-3.5% molybdenum, thiab 0.08-0.20% nitrogen, ntsuas kev tiv thaiv corrosion thiab lub zog.
Mechanicals: 620 MPa yam tsawg kawg nkaus tawm lub zog (ob npaug ntawm 304), 800 MPa tensile lub zog, thiab zoo heev chloride pitting kuj (PREN 34-36).
Daim ntaub ntawv: Offshore roj rigs (riser bolts), desalination nroj tsuag, thiab tshuaj tanks - qhov twg nws lub zog tso cai rau nyias nyias, txo qhov hnyav thiab nqi. Kev sib koom ua lag luam tau loj hlob ntawm 7% / xyoo, tau tsav los ntawm cov phiaj xwm hluav taws xob tauj dua tshiab uas xav tau kev tiv thaiv corrosion thiab siab zog.
Cov kev nkag siab no qhia txog yuav ua li cas cov qib steel hloov kho raws li cov qauv hauv cheeb tsam thiab cov kev xav tau ntawm kev lag luam, nrog rau cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv tshuab txiav txim siab lawv qhov tsim nyog rau ntau hom kev siv los ntawm kev ua zaub mov mus rau qhov tob - hiav txwv drilling.