S355JR yog qhov siab - lub zog, qis- carbon structural steel qib (EN 10025) paub txog nws qhov zoo weldability thiab toughness, nrog "S" rau structural, "355" rau nws qhov tsawg kawg nkaus 355 MPa yield zog, thiab "JR" qhia tias nws dhau los ntawm chav tsev 2 ntawm Charpy (2 degree) nqus. Nws tau siv dav hauv kev tsim kho, txuas hniav, tshuab hnyav, thiab kev tsim nkoj rau kev thauj khoom -cov kabmob uas xav tau lub zog thiab ua haujlwm ntev.
Cov yam ntxwv tseem ceeb
Lub zog:Siab tensile thiab yield zog (Ntau dua los yog sib npaug rau 355 MPa).
Weldability:Zoo heev, vim muaj cov ntsiab lus carbon tsawg, ua rau nws yooj yim rau vuam.
Toughness:Kev cuam tshuam zoo, lav los ntawm kev xeem "JR".
Kev faib tawm:Tsis yog- alloy, kub- dov structural steel.
Kev tawg ntawm lub npe
S:Cov qauv hlau.
355:Yam tsawg kawg nkaus Yield Strength nyob rau hauv MPa (rau thicknesses tsawg dua los yog sib npaug rau 16 hli).
JR:Qhov tshwm sim ntawm Charpy impact test (27 Joules ntawm +20℃).
Yam tseem ceeb cuam tshuam tus nqi ntawm S355JR Steel:
1.Cov nqi zog & ntau lawm
Hluav taws xob & Natural Gas: Steelmaking yog lub zog heev - siv zog. Volatility nyob rau hauv lub zog lag luam ncaj qha cuam tshuam rau melting, dov, thiab ua cov nuj nqis.
Kev Ua Raws Cai Carbon (EU): Cov nqi cuam tshuam nrog EU Emissions Trading System (ETS) ntxiv cov nqi tswj hwm rau European ntau lawm.
2.Kev Lag Luam Kev Lag Luam & Kev Muag Khoom Dynamics
Kev Tsim Kho & Kev Tsim Kho Vaj Tse: Kev thov muaj zog los ntawm kev tsim vaj tsev, choj, thiab cov tshuab hnyav- cov neeg siv tseem ceeb ntawm S355JR- thawb tus nqi nce.
Txoj Cai Kev Lag Luam Thoob Ntiaj Teb: EU tiv thaiv cov quotas, tariffs, thiab tiv thaiv - kev ntsuas pov tseg cuam tshuam rau kev sib tw ntshuam thiab qib khoom noj hauv tsev.
Qib Cov Khoom Muag: Tsawg Tshuag ntawm mills thiab distributors tuaj yeem ua rau luv luv -cov nqi nce ntxiv.
3.Product Specifications & Order Details
Form & Dimension: Complex sections (beams, columns) raug nqi ntau dua li cov phaj yooj yim lossis cov ntawv. Tsis yog - qhov loj me yuav raug nqi them nqi.
Quantity: Tej pob zeb xaj (tag nrho cov tsheb thauj khoom / nkoj thauj khoom) tau txais cov luv nqi tseem ceeb piv rau cov khw muag khoom me me.
Certification & Testing: Yuav tsum muaj rau EN 10204 3.1/3.2 daim ntawv pov thawj los yog kev xeem ntxiv (xws li, cov kev xeem cuam tshuam ntxiv) ntxiv cov nqi tswj hwm thiab kuaj.
Kev Ua Haujlwm: Ua ntej- txiav, drilling, lossis kho qhov chaw (xws li, priming) nce tus nqi kawg.
4.Logistics & Geography
Kev Thauj Mus Los: Kev ncua deb ntawm qhov chaw tsim khoom, cov nqi roj ntxiv, thiab kev thauj khoom muaj feem cuam tshuam rau tus nqi xa khoom.
Kev lag luam hauv cheeb tsam: Cov nqi sib txawv ntawm EU, UK, North America, thiab Asia vim cov nqi tsim khoom hauv zos, tus nqi hluav taws xob, thiab cov qauv xav tau.
5.Macroeconomic & Currency Factors
Tus nqi pauv: Raws li cov khoom siv raw khoom raug nqi hauv USD, qhov tsis muaj zog Euro lossis Phaus nce nqi rau cov neeg yuav khoom nyob sab Europe.
Inflation & Interest Rate: Kev nce nqi dav dav nce ntau lawm thiab cov nqi ua haujlwm. Cov paj laum siab dua tuaj yeem ua rau cov peev txheej tsim kho, uas tuaj yeem txo qhov kev thov thiab tus nqi siab dhau sijhawm.
Hauv cov ntsiab lus, S355JR tus nqi yog qhov sib xyaw ntawm cov khoom lag luam thoob ntiaj teb, cov nqi hluav taws xob hauv cheeb tsam / kev tswj hwm, cov kev xav tau tshwj xeeb, thiab kev lag luam dav dav. Nws cov xwm txheej raws li qhov siab - ntim kev tsim steel ua rau nws tshwj xeeb rau kev xav tau thiab cov khoom siv raw volatility.
Cov tshuaj muaj pes tsawg leeg ntawm steel S355JR (1.0045): EN 10025-2-2004
| Nominal thickness =< 30(mm) CEVmax=0.45 |
| C | Si | Mn | P | S | N | Cu | CEV |
| max 0.24 | max 0.55 Nws | max 1.6 hli | max 0.04 Nws | max 0.04 Nws | max 0.012 | max 0.55 Nws | max 0.47 Nws |
1. S355JR steel yog dab tsi?
S355JR yog ib qho uas tsis yog- alloy structural steel qib ib EN 10025-2, nrog rau qhov tsawg kawg nkaus yield zog ntawm 355 MPa thiab lav qhov cuam tshuam toughness ntawm chav tsev kub (+20℃).
2. Lub zog tawm ntawm S355JR yog dab tsi?
Qhov tsawg kawg nkaus yield zog ntawm S355JR yog 355 MPa rau nominal thickness mus txog 16 hli, txo rau thicker seem raws li EN 10025-2.
3. 'JR' hauv S355JR txhais li cas?
Lub 'JR' qhia tias Charpy V- ntsuas qhov cuam tshuam ntawm +20 degree, kom ntseeg tau qhov tsawg kawg nkaus absorbed zog ntawm 27 Joules rau qhov yooj yim toughness.
4. Puas yog S355JR sib npaug rau ASTM A572 Qib 50?
Tsis raws nraim. Txawm hais tias ob qho tib si muaj lub zog zoo sib xws (~ 345 MPa rau A572 Gr 50 vs . 355 MPa rau S355JR), lawv muaj cov qauv sib txawv thiab muaj cov tshuaj sib txawv thiab cov kev xeem.
5. Cov ntawv thov tseem ceeb ntawm S355JR yog dab tsi?
Nws yog dav siv hauv kev tsim kho hnyav, txuas hniav, cov tsev lag luam, cranes, machinery thav duab, thiab cov qauv sab nrauv uas xav tau lub zog siab dua S275 qib.
6. Qhov txawv ntawm S355JR thiab S355J2 yog dab tsi?
S355JR raug kuaj ntawm +20 degree, thaum S355J2 raug kuaj ntawm -20 degree, ua J2 haum rau kev siv huab cua txias.
7. S355JR puas tuaj yeem welded?
Yog lawm, S355JR muaj qhov zoo weldability siv cov kev sib txawv, txawm hais tias preheating yuav tsum tau rau cov seem tuab lossis cov kev pabcuam nruj.
8. Cov tshuaj muaj pes tsawg leeg ntawm S355JR yog dab tsi?
Cov muaj pes tsawg leeg muaj xws li max 0.24% Carbon, max 1.60% Manganese, thiab tswj phosphorus / sulfur (piv txwv li, P Tsawg dua lossis sib npaug rau 0.035%, S Tsawg dua lossis sib npaug li 0.035%).
9. Puas yog S355JR corrosion resistant?
Tsis yog, nws tsis yog corrosion-resistant. Kev tiv thaiv txheej xws li pleev xim lossis galvanizing yog tsim nyog rau qhov chaw sab nraum zoov lossis corrosive.
10. Qhov txawv ntawm S355JR thiab S275JR yog dab tsi?
Qhov sib txawv tseem ceeb yog lub zog: S355JR muaj lub zog qis dua qhov qis dua (355 MPa vs . 275 MPa), tso cai rau cov qauv sib dua lossis muaj zog dua.
11. Dab tsi yog cov khoom siv kho tshuab ntawm S355JR?
Cov khoom tseem ceeb muaj xws li yield zog Ntau tshaj los yog sib npaug rau 355 MPa (t Tsawg dua los yog sib npaug rau 16mm), tensile zog 470-630 MPa, thiab elongation yam tsawg kawg nkaus ntawm 20-22% nyob ntawm thickness.
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.
