S355J2 steel phaj yog cov hlau tsis tshua muaj siab-zog steel qauv, belongs rau European tus qauv kub-kuav los tiag steel khoom, tib series ntawm lwm yam ntaub ntawv xws li S355JO, thiab lwm yam., sib npaug rau lub teb chaws tus qauv Q355D, yog dav siv nyob rau hauv ib tug Ntau yam ntawm cov chaw tsim khoom, S355J2 steel phaj tsis tsuas yog muaj lub zog siab ntawm cov yas, tab sis kuj muaj qhov zoo toughness los xyuas kom meej tias kev siv ntau yam ntawm kev thauj khoom thiab qhov kub thiab txias, thiab tsis yog cov nyhuv ntawm. tuaj yeem ua kom ntev lub neej ntawm cov khoom siv, los tiv thaiv kev siv cov khoom siv thiab kev nyab xeeb ntawm tus kheej.
S355J2 steel phaj siv cov qauv yuav tsum ua raws li cov kev cai ntawm European tus qauv EN10025-2 (2004), J2 qhia -20 degree cuam tshuam kev ua haujlwm ntawm 27J.
S355J2 steel phaj xa khoom feem ntau xa tuaj rau hauv qhov kub dov, tuaj yeem ua haujlwm tswj tau dov lossis ua haujlwm hauv lub xeev, yog tias qhov kev thov sab raws li qhov xav tau rau kev xa khoom zoo, cov chaw tsim khoom yuav raug hu ua S355J2 + N, N sawv cev ntawm qhov normalized, los yog qhov kev thov sab kom nce tus Z mus rau qhov kev ua tau zoo ntawm qhov kev xeem, nws yuav ua raws li qhov saum toj no nce hauv Z mus rau qib; xws li S355J2 + N-Z15, S355J2 + N- Z25, S355J2+N-Z35, thickness kev ua tau zoo (Z-kev taw qhia kev ua tau zoo) yuav tsum ua raws li cov kev cai ntawm EN10164: 2004 rau qib Z-kev taw qhia.
S355J2 steel phaj carbon cov ntsiab lus (kev tshuaj xyuas melting) feem ntau tsis ntau dua 0.20%, cov ntsiab lus ntawm cov ntsiab lus alloying feem ntau tsis ntau dua 2.5%, cov khoom muaj zog tsis tsawg dua 295MPa, yog cov hlau tsis tshua muaj hlau. nrog rau kev cuam tshuam zoo toughness thiab vuam zog, muaj cov khoom siv zoo, siv dav hauv kev tsim kho ntawm lub teb chaws kev lag luam txuas hniav, steel qauv, engineering machinery, offshore roj platforms, high-sawv vaj tse thiab lwm yam teb, muaj ib tug zoo lub koob npe nrov thiab muab tso rau hauv kev siv. qhov ntau.
