S355J0W steel phaj yog hom tsis tshua muaj hlau hlau, tseem hu ua huab cua-resistant steel phaj. Nws atmospheric corrosion kuj yog 2-8 lub sij hawm muaj zog tshaj li cov pa roj carbon zoo tib yam. Cov phaj hlau no yog tsim los ntawm kev ntxiv qee yam ntawm cov hlau alloy, xws li P, Cu, Cr, Ni, Mo, thiab lwm yam, rau cov hlau zoo tib yam los txhim kho nws cov corrosion kuj. S355J0W steel phaj muaj cov khoom siv zoo thiab cov khoom siv vuam, yog li nws tau siv dav hauv kev tsim kho, tsim tshuab, khoom siv tshuaj lom neeg thiab lwm yam haujlwm
S355J0W steel phaj ua raws li EN10025-5 tus qauv, thiab cov xwm txheej xa khoom muaj xws li kub dov, normalizing lossis normalizing dov raws li txoj cai. Nws cov tshuaj muaj pes tsawg leeg muaj xws li carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S, chromium Cr, nickel Ni, tooj liab Cu, molybdenum Mo thiab lwm yam khoom. Cov ntsiab lus carbon yuav tsum tsawg dua lossis sib npaug rau 0.16%, thiab cov ntsiab lus silicon yuav tsum tsawg dua lossis sib npaug rau 0.5%. Cov ntsiab lus manganese yuav tsum yog 0.5-1.5%, cov ntsiab lus phosphorus yuav tsum tsawg dua lossis sib npaug rau {{10}}.010%, thiab cov ntsiab lus sulfur yuav tsum yog tsawg dua los yog sib npaug li 0.010%.
Cov khoom siv kho tshuab ntawm S355J0W steel phaj kuj tseem ceeb heev. Nws lub zog tensile ntau yog 410-630MPa, qhov taw tes tawm los yog ntau dua lossis sib npaug rau 335MPa, thiab qhov elongation tom qab tawg yuav tsum ntau dua lossis sib npaug rau 20%. Thaum qhov kub ntawm qhov cuam tshuam yog 0 degrees, qhov cuam tshuam lub zog yuav tsum siab dua lossis sib npaug li 31J. Cov khoom no ua rau S355J0W steel phaj zoo heev hauv ntau daim ntawv thov engineering.
Roj derrick yog ib qho ntawm cov ntawv thov tseem ceeb ntawm S355J0W steel phaj. Vim nws zoo heev tiv thaiv atmospheric corrosion, nws muaj peev xwm tswj tau zoo stability nyob rau hauv ib puag ncig uas muaj hydrogen sulfide gas. Tsis tas li ntawd, S355J0W steel daim hlau kuj tau siv dav hauv kev tsim cov hlab ntsha uas yuav tsum tau tiv thaiv lub siab ntawm corrosive media, xws li chaw nres nkoj, cov chaw tsim roj, thiab cov khoom siv tshuaj lom neeg thiab roj av.
Hauv luv luv, S355J0W steel phaj yog cov hlau tsis tshua muaj hlau nrog corrosion kuj zoo heev thiab zoo txhua yam khoom. Nws yog qhov tsim nyog rau kev tsim ntau yam khoom siv uas yuav tsum tau tiv thaiv lub siab ntawm corrosive media, tshwj xeeb tshaj yog ua lub luag haujlwm tseem ceeb hauv kev tsim khoom thiab kev thauj mus los hauv kev lag luam roj av, tshuaj lom neeg kev lag luam, thiab lwm yam.
