S275J0 yog tus qauv European (EN 10025-}2) tsis yog- alloy structural steel paub rau nws cov weldability zoo, lub zog (tsawg kawg 275 MPa tawm los), thiab cuam tshuam toughness mus rau 0 degree, qhia los ntawm "J0". Nws yog ntau yam khoom siv kub-kub siv hauv kev tsim kho, txuas hniav, tshuab, thiab kev tsim vaj tsev dav dav, muab kev sib npaug ntawm kev ua tau zoo thiab kev yooj yim, feem ntau muab cov khoom siv rau kev tsim kho.
Cov yam ntxwv tseem ceeb
TxujTS EN 10025-2 (Tebchaws Europe tus qauv).
Hom: Tsis yog - alloy structural steel.
Lub zog: Yam tsawg kawg nkaus tawm lub zog ntawm 275 MPa (megapascals).
Impact Test: Yuav tsum muaj Charpy qhov kev ntsuam xyuas yam tsawg kawg 27 Joules ntawm 0℃(zero degrees Celsius).
Weldability: Yooj yim weldable, ua rau nws haum rau ntau yam kev tsim kho.
Daim ntawv thov: Lub tsev, txuas hniav, kev tsim kho dav dav, engineering machinery (excavators, cranes), thiab lwm yam khoom siv.
Cov npe
S: Steel Qauv.
275: Yam tsawg kawg nkaus tawm lub zog (MPa).
J0: Kev ntsuas cuam tshuam ntawm 0 degree.
Cov Qauv & Cov Qauv
Muab khoom raws li daim hlau, ntawv, seem, tuav, thiab rods.
Feem ntau xa tuaj rau hauv cov xwm txheej zoo li qub lossis tsis kho rau kev tsim kho, tab sis kuj tuaj yeem quenched thiab tempered.
Lub zog tawm los ntawm S275J0 yog dab tsi?
Qhov tsawg kawg nkaus yield zog (ReH) ntawm S275J0 yog 275 megapascals (MPa) rau cov khoom siv feem ntau cov ntaub ntawv nrog ib tug nominal thickness Tsawg dua los yog sib npaug rau 16 hli.
Cov Lus Qhia Tshwj Xeeb Tseem Ceeb (EN 10025-2):
Qhov tsawg kawg nkaus yield zog tus nqi txo rau cov khoom tuab, raws li tus qauv rau cov qauv steel:
Rau nominal thickness Tsawg dua los yog sib npaug rau 16 hli: 275 MPa rau
>16mm txog 40mm: 265 MPa rau
>40mm txog 63mm: 255 MPa
>63mm txog 80mm: 245 MPa rau
>80mm-100 hli: 235 MPa rau
Cov ntsiab lus:Thaum S275J0 tau txhais los ntawm nws qhov cuam tshuam toughness ntawm 0℃("J0"), nws lub zog faib ua raws li S275 series. Rau cov qauv phaj, ntu, thiab tuav txog li 16 hli tuab, qhov kev lees paub qhov tsawg kawg nkaus lub zog yog 275 MPa (kwv yees li 40,000 psi). Rau kev tsim kev suav, engineers yuav tsum siv tus nqi sib thooj rau cov khoom tuab tuab.
Yield zog
| Yield Strength (Ntau dua lossis sib npaug N / mm2); Dia. (d) mm | |||||||
| Hlau Series | Qib Steel (Material Number) | d Tsawg dua los yog sib npaug rau 16 | 16< d ≤40 | 40< d ≤100 | 100< d ≤150 | 150< d ≤200 | 200< d ≤250 |
| S235 | S235JR (1.0038) | 235 | 225 | 215 | 195 | 185 | 175 |
Tensile zog
| Tensile Strength (Ntau dua lossis sib npaug N / mm2) | |||||
| Hlau Series | Qib Steel (Material Number) | d<3 | 3 Tsawg dua lossis sib npaug d Tsawg dua lossis sib npaug rau 100 | 100 | 150 | |
| S235 | S235JR (1.0038) | 360-510 | 360-510 | 350-500 | 340-490 |
1MPa=1N/mm2
Elongation
| Elongation (Ntau dua lossis sib npaug li %); Thickness (d) hli | ||||||
| Hlau Series | Qib Steel | 3 Tsawg dua lossis sib npaug d Tsawg dua lossis sib npaug rau 40 | 40< d ≤63 | 63< d ≤100 | 100 | 150 | |
| S235 | S235 JR | 26 | 25 | 24 | 22 | 21 |
1. S275J0 steel yog dab tsi?
S275J0 yog ib qho uas tsis yog- alloy structural steel qib ib EN 10025-2, nrog rau qhov tsawg kawg nkaus lub zog ntawm 275 MPa thiab lav qhov cuam tshuam toughness ntawm 0℃.
2. Qhov 'J0' hauv S275J0 txhais li cas?
Lub 'J0' qhia tias Charpy V- ntsuas qhov cuam tshuam ntawm 0 degree, kom ntseeg tau tias lub zog nqus tsawg kawg ntawm 27 Joules siv rau hauv qhov chaw txias.
3. Qhov txawv ntawm S275JR thiab S275J0 yog dab tsi?
S275JR raug kuaj xyuas ntawm +20 degree, thaum S275J0 raug kuaj ntawm 0 degree, ua J0 haum rau cov qauv raug rau ze - khov kub.
4. Cov ntawv thov tseem ceeb ntawm S275J0 yog dab tsi?
Nws yog siv rau hauv cov khoom siv rau cov txuas hniav, cov tsev, thiab sab nraum zoov infrastructure nyob rau hauv temperate climates qhov twg kub yuav poob mus rau 0 degree.
5. Lub zog tawm ntawm S275J0 yog dab tsi?
Qhov tsawg kawg nkaus yield zog yog 275 MPa rau thicknesses mus txog 16 hli, nrog txo qhov tseem ceeb rau thicker seem raws li tus qauv.
6. S275J0 puas tuaj yeem welded?
Yog lawm, S275J0 muaj weldability zoo. Txawm li cas los xij, preheating lossis tswj cov txheej txheem yuav raug pom zoo rau cov ntu tuab lossis vuam hauv cov xwm txheej txias.
7. Puas yog S275J0 sib npaug rau ASTM A572 Qib 50?
Tsis ncaj. Txawm hais tias ob qho tib si muaj lub zog zoo sib xws (~ 345 MPa rau A572 Gr 50 vs . 275 MPa rau S275J0), A572 Qib 50 muaj lub zog ntau dua thiab cov kev xav tau sib txawv.
8. Cov tshuaj muaj pes tsawg leeg ntawm S275J0 yog dab tsi?
Nws feem ntau muaj max 0.21% Carbon, max 1.50% Manganese, thiab tswj qib ntawm phosphorus thiab sulfur (piv txwv li, P Tsawg dua lossis sib npaug li 0.035%, S Tsawg dua lossis sib npaug li 0.035%).
9. Puas yog S275J0 corrosion resistant?
Tsis yog, S275J0 tsis yog corrosion- tiv taus thiab yuav tsum muaj cov txheej txheem tiv thaiv xws li pleev xim lossis galvanizing rau sab nraum zoov.
10. Qhov txawv ntawm S275J0 thiab S355J0 yog dab tsi?
S355J0 muaj qhov siab tshaj qhov ua tau zoo tshaj plaws (355 MPa) tab sis zoo sib xws cuam tshuam toughness ntawm 0 degree, ua rau nws muaj zog rau txias - huab cua kev siv.
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.
