S355J2 yog ib tug dav siv nyob sab Europe tus qauv (EN 10025-2) siab -lub zog, low-carbon structural steel. Nws yog tus cwj pwm los ntawm nws zoo heev weldability, toughness, thiab siab yield zog.
Ntsiab Specifications & Lub ntsiab lus
Lub npe "S355J2" tawg raws li hauv qab no:
S: Qhia txog cov qauv hlau.
355: Sawv cev qhov tsawg kawg nkaus Yield Strength ntawm 355 MPa (rau thicknesses Tsawg dua los yog sib npaug rau 16 hli).
J2: Qhia qhov cuam tshuam toughness. Nws yuav tsum ncav cuag qhov tsawg kawg nkaus ntawm 27 Joules thaum lub sij hawm Charpy V-qhov ntsuas qhov cuam tshuam ntawm -20℃.
1.0577: Tus lej ntawm cov khoom siv raws li EN system.
Mechanical & Physical Properties
Tensile Strength: Feem ntau yog nyob ntawm 470 txog 630 MPa.
Weldability: Highly weldable nrog qhov siab tshaj plaws Carbon Equivalent Value (CEV) ntawm kwv yees li 0.47.
Hom Kev Xa Khoom: Feem ntau muab raws li S355J2+N, qhov "+N" qhia tias nws tau ua haujlwm zoo (kwv yees lossis cua sov-kho rau lub xeev normalized) txhawm rau txhim kho cov qauv nplej thiab tawv.
Cov ntawv thov siv
Vim nws lub zog - mus rau - qhov hnyav piv thiab durability nyob rau hauv qis kub, nws yog siv nyob rau hauv:
Civil Engineering: choj, vaj tse, thiab kis tau tus yees.
Heavy Machinery: cranes, excavators, mining khoom, thiab trailers.
Maritime/Energy: Offshore lug, shipbuilding, thiab cua turbines.
Kev Lag Luam: Cov hlab ntsha siab, kev tsheb ciav hlau axles, thiab cov pas nrig txuas.
Ntiaj teb no sib npaug
Thaum tsis zoo ib yam, S355J2 feem ntau piv rau cov qib thoob ntiaj teb hauv qab no:
Tebchaws Asmeskas (ASTM): A572 Qib 50 yog qhov sib npaug ze tshaj plaws.
UK (Yav tas los BS): 50D.
Lub teb chaws Yelemees (Yav tas los DIN): St52-3.
Tuam Tshoj (GB): Q355D lossis Q345D.
Cov tshuaj muaj pes tsawg leeg ntawm cov hlau S355J2 (1.0577): EN 10025-2-2004
| Nominal thickness =< 40(mm) C max=0.20 Nominal thickness =< 30(mm) CEVmax=0.45 |
| C | Si | Mn | P | S | Cu | CEV |
| max 0.22 | max 0.55 Nws | max 1.6 hli | max 0.03 Nws | max 0.03 Nws | max 0.55 Nws | max 0.47 Nws |
Tus nqi ntawm S355J2 steel yog dynamic thiab cuam tshuam los ntawm ntau yam - txheej txheej ntawm lub ntiaj teb no, lub cheeb tsam, thiab kev lag luam- tej yam tshwj xeeb. Nov yog cov ncauj lus kom ntxaws txog tus nqi tseem ceeb ntawm tus tsav tsheb:
1. Macro & Ntiaj Teb Kev Ua Lag Luam Factors (Tus "Pib Nqe" Tsav Tsheb)
Cov no teeb tsa tus nqi hauv pem teb rau tag nrho cov khoom siv hlau.
Raw Material Costs: Tus nqi ntawm cov hlau ore, coking thee, thiab cov hlau seem yog cov khoom siv tseem ceeb tshaj plaws. Tus nqi ntawm cov hlau ore ncaj qha nce nqi ntau lawm rau mills.
Ntiaj Teb Kev Pabcuam & Kev Xav Tau: Kev thov muaj zog los ntawm kev tsim kho thiab kev tsim khoom loj (piv txwv li, hauv Suav teb, EU, lossis Asmeskas) nce nqi. Kev tsim khoom thoob ntiaj teb lossis kev lag luam qeeb tuaj yeem ua rau tus nqi poob.
Tus nqi zog: steel ntau lawm yog lub zog heev - siv zog. Cov nqi siab rau cov nkev thiab hluav taws xob ua haujlwm nce nqi rau cov mills, tshwj xeeb tshaj yog nyob hauv Europe.
Freight & Logistics: Tus nqi thauj khoom raw mus rau mills thiab cov khoom tiav rau kev ua lag luam. Kev cuam tshuam hauv kev xa khoom thoob ntiaj teb lossis cov nqi thauj khoom ntau ntxiv ntxiv tus nqi.
Txoj Cai Kev Lag Luam: Kev lag luam tariffs, quotas, thiab tiv thaiv - kev ntsuas pov tseg (xws li EU cov kev tiv thaiv steel) tiv thaiv kev lag luam hauv cheeb tsam thiab tuaj yeem ua kom cov nqi hauv tsev siab dua tus nqi ntshuam thoob ntiaj teb.
2. Qib-Tshwj xeeb & Cov Khoom Zoo (Lub "S355J2 Hwm")
Cov no piav qhia vim li cas S355J2 raug nqi ntau dua li cov hlau yooj yim thiab txawv ntawm cov qib zoo sib xws.
Alloying & Processing: Ua tiav qhov lav -20℃cuam tshuam toughness (J2) yuav tsum muaj kev tswj tshuaj nruj dua (piv txwv li, manganese, micro-alloys) thiab cov kev coj ua tiav ntau dua li cov qauv qib xws li S355JR.
Kev Ntsuas Kev Ntsuas: Qhov yuav tsum tau muaj Charpy V- ntsuas ntsuas ntawm -20℃ntxiv kev lees paub zoo thiab cov nqi ntawv pov thawj uas tsis tshwm sim rau cov tsis yog- cuam tshuam-kuaj steels.
Kev sib tw nrog "+N": Tus nqi kuj cuam tshuam los ntawm nws txoj haujlwm txheeb ze rau S355J2+N (normalized). Tus qauv raws li - dov J2 yog pheej yig dua li "+N" version tab sis kim dua cov qib pib.
Kev Lag Luam Volume: S355J2 yog ib qho khoom siab - ntim, cov khoom lag luam. Qhov no feem ntau ua rau nws muaj nqi sib tw ntau dua li niche, tshwj xeeb steels tab sis me ntsis kim dua cov qib feem ntau.
3. Kev yuav khoom & Kev lag luam Factors (Koj cov nqe lus kawg)
Cov no ua rau cov nqi sib txawv ntawm cov neeg yuav khoom, cov neeg muag khoom, thiab tus neeg txiav txim.
Order Volume: Loj tonnage orders (tag nrho truckloads, shiploads) ruaj ntseg ntim txo nqi piv rau me me, tawm -the- txee yuav khoom.
Yam khoom & Dimensions:
Daim ntawv: Nqe sib txawv ntawm phaj, ntu (kab kab, raws), thiab hollow seem. Complex dov rau cov qauv ntu feem ntau raug nqi ntau dua.
Thickness & Size: Non-standard thicknesses, very thick plates (>80mm), lossis qhov loj me tuaj yeem nqa tus nqi. Ua ntej- txiav kom loj ntxiv cov nqi ua haujlwm.
Tus me nyuam qhov xwm txheej: Standard "raws li{0}}rolled" S355J2 yog lub hauv paus. Yog tias koj tshwj xeeb yuav tsum tau ua kom zoo li qub ("+ N"), tus nqi nce vim qhov kev kho cua sov ntxiv.
Daim ntawv pov thawj & Cov ntaub ntawv: Daim ntawv pov thawj zeb txheem (EN 10204 Hom 2.2) suav nrog. Thov ib daim ntawv pov thawj Hom 3.1 (nrog rau kev ywj pheej thib peb- tog neeg soj ntsuam) lossis kev kuaj ntxiv ntxiv tus nqi.
1. S355J2 Steel yog dab tsi?
S355J2 yog European tus qauv qauv steel nrog qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa thiab lav qhov cuam tshuam toughness ntawm 27 Joules ntawm -20 degree, ua rau nws haum rau cov ntawv thov kub tsawg.
2. Qhov txawv ntawm S355J0 thiab S355J2 yog dab tsi?
Qhov sib txawv tseem ceeb yog qhov ntsuas qhov ntsuas kub. S355J0 raug kuaj ntawm 0 degree, thaum S355J2 raug kuaj ntawm -20 degree, muab S355J2 zoo dua qhov kub thiab txias toughness rau qhov chaw txias dua.
3. Qhov 'J2' txhais li cas hauv S355J2?
Lub 'J2' qhia cov hlau cuam tshuam rau qib toughness. 'J' txhais tau hais tias qhov tsawg kawg nkaus Charpy V-qhov cuam tshuam lub zog yog 27 Joules, thiab '2' txhais tau tias qhov kev xeem tau ua ntawm -20℃.
4. Lub zog tawm ntawm S355J2 yog dab tsi?
Qhov tsawg kawg nkaus tawm lub zog yog 355 MPa rau tuab txog 16 hli, tab sis nws txo qis rau cov ntu tuab (piv txwv li, 345 MPa rau 16-40mm, 335 MPa rau 40-63mm) raws li EN 10025-2.
5. Puas yog S355J2 sib npaug rau ASTM A572 Qib 50?
Lawv feem ntau sib piv rau lub zog, tab sis S355J2 muaj qhov yuav tsum tau ua kom tawv tawv ntawm -20 degree, thaum ASTM A572 Gr. 50 yuav tsum muaj kev cuam tshuam los ntawm tus neeg yuav khoom.
6. S355J2 puas tuaj yeem welded?
Yog lawm, S355J2 muaj weldability zoo. Txawm li cas los xij, cov txheej txheem tsim nyog-xws li kev siv cov khoom siv tsawg tsawg- hydrogen electrodes thiab siv preheat rau cov seem tuab- yuav tsum tau ua raws li kev tswj hwm nws cov khoom siv kho tshuab.
7. S355J2+N yog dab tsi?
Lub '+ N' txhais tau hais tias cov hlau yog muab rau hauv ib qho kev ua kom zoo lossis ua kom zoo dua qub. Cov txheej txheem no refines cov qauv nplej, txhim kho toughness thiab ua rau cov hlau ntau zam txim rau vuam, tshwj xeeb tshaj yog nyob rau hauv thicker seem.
8. Cov Khoom Siv Tshuaj Ntawm S355J2 yog dab tsi?
S355J2 tau tswj cov qib carbon, manganese, silicon, phosphorus, thiab sulfur. Nws qhov siab tshaj plaws Carbon Equivalent (CEV) kuj txwv, feem ntau nyob ib ncig ntawm 0.40-0.45, kom ntseeg tau zoo weldability.
9. Lub zog tensile ntawm S355J2 yog dab tsi?
Rau cov tuab tuab (tsawg dua lossis sib npaug li 40 hli), lub zog tensile yog li ntawm 470 MPa txog 630 MPa, raws li tau teev tseg hauv EN 10025-2 tus qauv.
10. S355J2 Steel siv qhov twg?
Nws yog dav siv nyob rau hauv cov ntaub ntawv uas raug rau huab cua txias, xws li txuas hniav, lub tsev thav duab, offshore qauv, cranes, thiab cov khoom hnyav uas tsis tshua muaj - kub toughness yog ib qho tseem ceeb.
11. Qhov ceev ntawm S355J2 yog dab tsi?
Zoo li feem ntau cov qauv carbon steels, qhov ceev ntawm S355J2 yog kwv yees li 7,850 kg / m³ (los yog 7.85 g / cm³).
12.Puas yog S355J2 Corrosion Resistant?
Tsis yog, S355J2 tsis yog corrosion{2}}resistant (weathering) steel. Nws yog cov pa roj carbon steel uas yuav xeb yog tias raug rau cov khoom tshwj tsis yog muaj kev tiv thaiv los ntawm cov xim, galvanizing, lossis lwm yam txheej.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
