Txheej txheem cej luam
S275JR yog ib qho uas tsis yog - alloy zoo structural steel qib txhais los ntawm European tus qauvTS EN 10025-2. Thaum cov hlau no tau tsim los rau hauv cov yeeb nkab, nws feem ntau yog tsim raws li tus qauv sib txawv uas hais txog cov khoom siv ntawm S275JR, xws liTS EN 10210-1(rau qhov kub- tiav hollow seem) los yogTS EN 10219-1(rau txias-tsim hollow seem).
Hauv cov ntsiab lus yooj yim,S275JR Carbon Steel Yeeb Nkabyog ntau yam, tsawg- tus nqi, thiab siv dav siv cov yeeb nkab steel paub txog nws lub zog zoo thiab zoo weldability.
Cov yam ntxwv tseem ceeb thiab cov khoom
1. Mechanical Properties
Tus "S" sawv cev rau "Structural Steel," "275" qhia qhovyam tsawg kawg nkaus yield zogntawm 275 MPa (Megapascals) ntawm lub thickness tsawg dua los yog sib npaug rau 16 hli, thiab "JR" qhia tiasCharpy Impact Strengthntawm chav tsev kub (20 ° C / 68 ° F).
Yield zog (ReH): 275 MPa (min)rau thickness txog li 16 hli. Lub zog tawm los txo qis me ntsis raws li cov khoom thickness nce.
Tensile zog (Rm):410 - 560 MPa
Yam tsawg kawg Elongation:Nws txawv nrog tuab, tab sis feem ntau nyob ib ncig ntawm23%, qhia zoo ductility.
Impact Energy (JR): 27 Joules yam tsawg kawg nkausntawm +20℃. Qhov no txhais tau hais tias nws muaj qhov zoo toughness rau kev siv cov qauv siv nyob rau hauv qhov kub thiab txias.
2. Tshuaj muaj pes tsawg leeg
S275JR yog cov hlau uas muaj cov pa roj carbon tsawg, uas yog qhov tseem ceeb rau nws cov khoom.
| Lub ntsiab | Kev sib xyaw (%) |
|---|---|
| Cov pa roj carbon (C) | Tsawg dua los yog sib npaug rau 0.21 (max) |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 1.50 (max) |
| Phosphorus (P) | Tsawg dua lossis sib npaug rau 0.035 (max) |
| Sulfur (S) | Tsawg dua lossis sib npaug rau 0.035 (max) |
Cov ntsiab lus carbon tsawg:Ua rau cov hlau yooj yim rau welding thiab tsim yam tsis muaj nkig.
Cov ntsiab lus tsis tshua muaj alloy:Ua nws tus nqi -zoo, tsis yog- hlau alloy.
3. Weldability thiab Machinability
Weldability: Zoo heev.Qhov qis carbon sib npaug (CEV) ua rau S275JR zoo heev rau txhua txoj kev vuam yam tsis tas yuav tsum tau tshwj xeeb ua ntej- lossis tom qab- kho cua sov rau feem ntau cov tuab thiab daim ntawv thov.
Machineability:Zoo. Nws tuaj yeem txiav tau yooj yim, drilled, thiab machined nrog cov cuab yeej kev cob qhia.
Cov qauv siv rau S275JR Yeeb Nkab
Cov kav dej lawv tus kheej tsis yog hu ua "S275JR kav" tab sis yog cov seem hollow ua los ntawm S275JR steel. Cov qauv tseem ceeb yog:
EN 10210-1/2: Kub-tiav cov qauv hollow seem
Cov hlau yog tsim los ntawm qhov kub thiab txias, uas ua rau cov khoom uas muaj cov kab sib npaug thiab cov nplais -dawb tiav.
Feem ntau muaj lub zog zoo dua thiab tawv tawv ntawm cov ces kaum piv rau txias - tsim.
TS EN 10219-1/2: Txias-formed structural hollow seem
Cov hlau yog tsim nyob rau hauv chav tsev kub, ua rau cov ces kaum ntse.
Ib qho ntau dua thiab raug nqi - cov txheej txheem tsim tau zoo rau cov kav raj.
Ob tus qauv lees paub tias cov khoom siv kho tshuab ntawm cov yeeb nkab tiav (xws li lub zog tawm los) ua tau raws li qhov yuav tsum tau ua rau cov khoom siv S275JR.
Sib piv nrog Lwm Cov Qib Siab
| Feature | S275 JR | S355 JR | A36 (US Standard) |
|---|---|---|---|
| Yield zog | 275 MPa rau | 355 MPa rau | 250 MPa (≈36 ksi) |
| Tensile zog | 410-560 MPa | 470-630 MPa | 400-550 MPa |
| Qhov txawv tseem ceeb | Zoo dav - lub hom phiaj lub zog | Siab zog, tso cai rau cov qauv sib dua | Zoo ib yam li S275JR, tab sis txhais los ntawm ASTM |
| Kev siv yam | Cov qauv dav dav, kev txhawb nqa | Hnyav dua -cov haujlwm ua haujlwm, txuas hniav, siab- nce | Cov qauv dav dav (US sib npaug) |
Tej kev siv
S275JR yeeb nkab (hollow seem) yog ib qho ntawm cov khoom siv feem ntau siv hauv kev tsim kho thiab kev tsim khoom vim nws lub zog zoo heev - rau - qhov hnyav piv.
Tsev thiab Kev Tsim Kho:Cov qauv tsim, lub ru tsev trusses, kab, thiab qhov chaw thav duab.
Cov nroj tsuag muaj:Txhawb cov qauv, conveyor system thav duab, thiab kev ruaj ntseg guardrails.
Infrastructure:Choj railings, kos npe txhawb, thiab cov rooj tog hauv kev.
Agricultural Machinery:Ncej thiab chassis rau cov khoom siv.
General Fabrication:Ncej rau rooj vag, laj kab, rooj tog, thiab ntau yam kev ua haujlwm txhua yam.
Qhov zoo thiab qhov txwv
Qhov zoo:
Tus nqi -zoo:Ib qho ntawm cov khoom siv hluav taws xob zoo tshaj plaws muaj.
Yooj yim Weldable:Simplifies fabrication thiab txo cov nqi.
Zoo zog & Ductility:Qhov sib npaug sib npaug rau feem ntau cov qauv siv.
Dav Muaj:Yooj yim muaj nyob rau hauv ntau qhov ntau thiab tsawg thiab cov duab (Square, Rectangular, Circular).
Kev txwv:
Tsis yog rau High -Stress Applications:Lub zog qis dua qib zoo li S355, ua rau nws tsis tsim nyog rau cov qauv thauj khoom hnyav uas qhov hnyav hnyav yog qhov tseem ceeb.
Tsawg Corrosion Resistance:Zoo li txhua cov pa roj carbon steel, nws yuav xeb yog tias tsis tiv thaiv xim, galvanization, lossis lwm yam txheej txheej.
Tsis yog rau Cov Kub Kub:Lub "JR" toughness tsuas yog guaranteed nyob rau hauv chav tsev kub. Rau sub-zero daim ntawv thov, qib zoo li S275J0 lossis S275J2 yuav tsum tau ua.
Cov ntsiab lus
S275JR Carbon Steel Yeeb Nkabyog lub hauv paus tsev thaiv ntawm kev lag luam niaj hnub thiab kev tsim kho. Nws muaj kev ntseeg siab, kev lag luam, thiab yooj yim - rau- ua haujlwm - nrog rau cov khoom siv rau ntau yam ntawm cov qauv siv uas muaj zog siab lossis tshwj xeeb qis - qhov kub thiab txias tsis tas yuav tsum muaj. Thaum qhia meej, nws yog ib qho tseem ceeb kom paub qhov txawv ntawm qhov kub- tiav (EN 10210) thiab txias- tsim (EN 10219) hom raws li qhov xav tau ntawm koj qhov project.
