Qhov txawv ntawm S355J2H thiab S355K2H yog dab tsi?
S355J2H muaj ntau carbon, manganese, thiab silicon tshaj S355K2H. Qhov no ua rau nws muaj zog dua thiab toughness, tab sis nws kuj ua rau nws me ntsis nkig thiab nyuaj rau tshuab. S355K2H, ntawm qhov tod tes, muaj ntau phosphorus thiab sulfur, uas ua rau nws yooj yim dua machinable thiab weldable.
Qhov txawv ntawm S355JR thiab S275JR yog dab tsi?
S275JR: Muaj lub zog tensile ntau ntawm 410-560 MPa, nyob ntawm thickness. S355JR: Muab lub zog tensile ntau dua ntawm 470-630 MPa, muab kev tiv thaiv zoo rau deformation nyob rau hauv kev ntxhov siab.
S355 steel puas tuaj yeem welded?
S355 steel qauv, dav siv nyob rau hauv offshore, shipbuild - ing, thiab kev tsim kho kev lag luam, paub txog nwszoo heev weld- muaj peev xwm thiab kav ntev, nrog rau nws cov corrosion thiab qaug zog yam ntxwv.
Qhov txawv ntawm S355 J2 thiab K2 yog dab tsi?
Nws feem ntau yog nyob rau hauv lawv qhov kev ntsuam xyuas cuam tshuam:J2 cim Charpy V-Ntshuam Impact Tested Longitudinal 27 Joules ntawm -20 ˚C hauv qab 150mm thickness. K2 cim Charpy V-Ntshuam Impact Tested Longitudinal 40 Joules ntawm -20 ˚C max 100mm thickness.
Lub ntsiab lus ntawm S355K2 yog dab tsi?
Kub-rolled structural steel. Tsab ntawv S (S=Cov Qauv), ua raws li tus lej uas qhia tias lub zog tawm los (hauv qhov no 355). K2 qhia qhov cuam tshuam tsawg kawg nkaus ntawm 40 Joules (J) ntawm qhov ntsuas kub ntawm -20 degree.