Cov hlau hlau yog ib hom hlau uas tau tsim tshwj xeeb los siv hauv kev tsim kho thiab engineering tej yaam num. Nws yog tsim los ntawm cov qib sib txawv ntawm cov hlau uas muaj cov khoom sib txawv thiab cov txiaj ntsig zoo rau cov txiaj ntsig zoo rau cov ntawv thov sib txawv. Feem ntau siv cov qib ntawm cov qauv hlau muaj xws li S235, S275, thiab S355. Txhua ntawm cov qib ntawm cov hlau muaj cov khoom siv tau thiab cov txiaj ntsig, ua rau lawv haum rau kev tsim kho kev tsim kho thiab engineering.
S235 steel hlau
S235 steel is a high-yield and tensile-strength steel that is well-suited for structural applications such as bridges and buildings. Nws tseem zoo tagnrho rau txias - sib sau, ua rau nws xaiv tau rau cov haujlwm tsim qauv. S235 steel muaj kev tiv thaiv zoo heev rau corrosion, ua rau nws xaiv zoo rau cov phiaj xwm sab hauv.
S275 steel hlau
S275 tus hlau paub txog nws lub zog siab thiab tawv, ua rau nws zoo tagnrho rau cov ntawv thov uas xav tau kev cuam tshuam ntxiv thiab kev tawm tsam rau kev cuam tshuam. Nws kuj tseem tiv taus corrosion, ua rau nws xaiv qhov zoo rau kev tsim kho sab nraum zoov. Yog tias koj qhov project nyob hauv qhov chaw sab nraud
S355 steel hlau
S355 cov hlau yog paub txog nws lub zog tshwj xeeb thiab txhav, ua rau nws zoo rau kev siv hnyav xws li cranes thiab cov tshuab hnyav. Nws tseem tiv taus kev puas tsuaj heev thiab hnav, ua rau nws xaiv zoo rau cov phiaj xwm uas yuav tsum muaj siab yuav hnav thiab rhuav. Yog tias koj qhov kev pab cuam yuav tsum muaj qhov tshwj xeeb muaj zog thiab txhav rau cov khoom siv hnyav, S355 steel yuav yog qhov kev xaiv zoo tshaj plaws.
Tshuaj lom neeg muaj pes tsawg leeg ntawm S355, S275, thiab S235 Steels
Cov tshuaj lom neeg muaj kuab lom ntawm S355, S275, thiab S235 steels ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab lawv cov kev siv rau cov ntawv thov tshwj xeeb. Piv txwv li, S355 steel muaj cov feem ntau dua ntawm cov pa roj carbon tau muab piv rau S275 thiab S235 steel, ua rau nws muaj zog thiab ntau dua. Ib yam li ntawd, S275 steel muaj ntau manganese tshaj s235 steel, uas txhim kho nws lub zog thiab tawv.
|
EU qib |
C% |
Mn% |
P% |
S% |
SI% |
|
S235 |
0.22 max |
1.60 Max |
0.05 max |
0.05 max |
0.05 max |
|
S275 |
0.25 max |
1.60 Max |
0.04 max |
0.05 max |
0.05 max |
|
S355 |
0.23 max |
1.60 Max |
0.05 max |
0.05 max |
0.05 max |
Cov Khoom Siv Neeg Kho Tshuab ntawm S355, S275, thiab S235 Steels
Cov cuab yeej ua haujlwm ntawm S355, S275, thiab S275, thiab S235 steel kuj tseem ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab lawv cov kev haum rau cov ntawv thov sib txawv. Cov khoom no suav nrog cov hlau tawm lub zog, thiab ductility, uas txhua tus ua lub luag haujlwm ntawm kev txiav txim siab cov khoom siv thiab tiv thaiv kev tawm tsam.
Yielding ntawm S355, S275, thiab S235
Tsis muaj teeb meem dab tsi raws li kev siv yog, tawm lub zog yog argluably lub tshuab hluav taws xob tseem ceeb tshaj plaws ntawm cov hlau qauv. Nws yog txiav txim siab los ntawm Tensile kuaj thiab nws tuaj yeem soj ntsuam ntawm kev ntxhov siab - strain nkhaus. Deformation pib tshwm sim ntawm cov txiaj ntsig taw tes thiab cov txiaj ntsig lub zog yog qhov chaw tshwj xeeb yog nyob hauv kev ntxhov siab (MPA) axis. Nws yog qhov tsawg kawg nkaus ntawm kev quab yuam rau uas cov tsis txaus ntseeg pib tshwm sim.
Tus neeg tsim khoom txiav txim siab cov ntawv thov tsim nyog kom tau txais cov qauv ntsuas pom rau cov qauv hlau. Siv cov txiaj ntsig muaj txiaj ntsig zoo raws li kev siv, koj tuaj yeem paub txog kev siv tsim nyog thiab kev tso ua cov txheej txheem steel txheem hauv koj cov phiaj xwm. Nws yog ib qho tseem ceeb kom nco ntsoov tias cov ntaub ntawv nrog qhov tsawg tawm los lub zog yuav tsis muaj kev txhawb nqa zoo li qub.
Tensile kuaj ntawm S355, S275, thiab S235
Lub Tensile xeem yog thov rau cov qauv cov ntaub ntawv los txiav txim siab qhov kawg tensile lub zog qhov chaw ntawm kev Necking pib tshwm sim. Nws qhia txog qhov kev ntxhov siab ntau tshaj plaws uas cov khoom tuaj yeem tiv taus. Txawm li cas los xij, hauv kev xyaum, tawm lub zog yog qhov tseem ceeb tshaj qhov tseeb tensile muaj zog txij li, cov khoom yog twb deformed thiab siv tau nyob rau hauv cov kev cog lus zoo li qub. Ntawm chav kawm, kawg tensile lub zog tsis yog ib yam khoom yuav tsis quav ntsej kiag li. Qee qhov tseem ceeb tuaj yeem nyeem los ntawm lub rooj nyob hauv qab no.
Xaiv nruab nrab ntawm S355, S275, thiab S235 qauv qauv cov qhab nia nyob ntawm koj txoj haujlwm, tshwj xeeb lub zog, peev nyiaj, thiab ib puag ncig cov kev xav tau.
1. Lub zog yuav tsum tau ua
S355: Cov qib no muaj cov txiaj ntsig ntau tshaj plaws lub zog muaj zog, ntawm 355 MPa. Nws yog qhov zoo tagnrho rau hnyav - plaub caug} Cov tswv yim xav tau siab} Bearing muaj peev xwm, siab vaj tse, lossis cov vaj tse siab.
S275: Nrog ib qho txiaj ntsig lub zog ntawm 275 MPa, S275 yog tsawg dua muaj zog dua S355 tab sis pheej yig. Nws yog feem ntau siv hauv kev tsim kho uas muaj zog tsis yog qhov tseem ceeb.
S235: Muab cov khoom noj tsawg tshaj plaws muaj zog ntawm 235 MPA, S235 yog qhov tsim nyog rau cov qauv me dua lossis cov ntawv thov uas muaj zog dua.
2. Cov kev txiav txim siab nyiaj txiag
S355 feem ntau kim tshaj plaws vim nws lub zog siab dua thiab lub zog.
S275 thiab S235 muab tus nqi -} daws daws teeb meem tsawg dua. S235 yog qhov tsawg tshaj plaws kim, feem ntau xaiv rau qis- tus nqi ua haujlwm nrog cov kev xav tau tsawg.
3. Daim Ntawv Thov Hom
Cov qauv hnyav: Yog tias koj qhov haujlwm cuam tshuam nrog cov khoom siv hnyav lossis cov vaj tse tseem ceeb (xws li cov choj loj, lossis thauj khoom {{} {}}} Cov kev xaiv zoo tshaj plaws.
Cov khoom thauj khoom: Rau cov ntawv thov zoo li kev tsim kho vaj tse lossis txhawb nqa, S275 muaj kev sib npaug ntawm lub zog thiab tus nqi.
Cov qauv teeb lossis tsis {{0} Gr} Cov khoom siv hluav taws xob: S235 yog qhov tsim nyog rau cov khoom siv nyob qhov twg, cov teeb me me, lossis lub teeb yuag.
4. Ib puag ncig cov xwm txheej
S355 thiab S275 qib feem ntau tuaj nrog cov sib txawv ntxiv (xws li S355J2, S275J2) uas tau cuam tshuam rau qhov kub thiab txias. Cov kev sib txawv no tuaj yeem muaj txiaj ntsig yog tias koj qhov prolly cuam tshuam rau huab cua txias lossis xav tau kev muaj zog ntxiv.
Hauv cov ntsiab lus:
Xaiv S355 rau high-} lub zog xav tau.
Xaiv S275 rau kev sib zog thiab tus nqi tsim kho.
Xaiv S235 rau lub teeb ci lossis tus nqi -} cov phiaj xwm rhiab.
Txhua qib tuaj yeem muab cov tshuaj zoo, tab sis S355 feem ntau muab cov phiaj xwm kev ntseeg zoo tshaj plaws rau cov dej num uas xav tau, thaum S235 feem ntau xaiv rau kev siv nyiaj- kev tsim qauv.
Xav paub ntau ntxiv lossis xav tau cov lus qhia, thov hu rau kuv dawb do.
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Cov FAQ
Q: Dab tsi yog cov tshuaj lom neeg muaj pes tsawg leeg ntawm S275JR?
A: Cov tshuaj lom neeg muaj pes tsawg leeg ntawm S275JR phaj? S275JR Phaj tshuaj lom neeg muaj pes tsawg leeg muaj cov ntsiab lus carbon ntawm 0.4%, ib cov ntsiab lus manganese ntawm 0.03%, thiab ib cov ntsiab lus npib tsib xee ntawm 0.012%.
Q: yog S275JR kub dov kub?
A: steel s275jr
Kev faib tawm: tsis -} alloy txheej txheem steel. Cov khoom lag luam: tiaj thiab ntev kub- rolled cov khoom lag luam thiab semi- Cov khoom tiav.
Q: Dab tsi yog qhov txawv ntawm S235 thiab S275 vs S355?
A: Xaiv txoj cai qauv txheej txheem
Piv txwv li, S355 steel muaj cov feem ntau dua ntawm cov pa roj carbon tau muab piv rau S275 thiab S235 steel, ua rau nws muaj zog thiab ntau dua. Ib yam li ntawd, S275 steel muaj ntau manganese tshaj s235 steel, uas txhim kho nws lub zog thiab tawv.
Q: Dab tsi yog S275 steel siv rau?
A: S275 yog cov roj carbon hlau tsawg heev tsawg dua rau ntau qhov kev siv hluav taws xob thiab cov qauv txheej txheem. Supplied as a hot rolled non alloy steel it is used widely in the construction, maintenance and manufacturing industries.
Q: Suav sib npaug ntawm S235JR steel?
A: Q235B
Qhov ze tshaj Suav sib npaug rau S235JR (EN025-2) yog Q235B (GB / T 700-2006). Thaum cov qib no sib faib cov khoom siv zoo sib xws, hloov maj mam sib txawv hauv kev sib xyaw thiab kev ua tau zoo yuav tsum tau tshuaj xyuas kom ua raws li thiab kev nyab xeeb.
| Lwm Lub Phaj Hlau | ||||
| Lub npe | Khoom | Qhov tshwj xeeb (hli) | Tons yog li tons | Hais txog |
| Tsawg Alloy | Q345A, Q345C, Q345D, Q345E, Q490, Q400C, ss400, SF302GRC, S275NP, 35CRMO | 6 - 350 | 5788.56 | Normalizing, tempered, tswj dov, kub dov, kub dov, kub tshuaj xyuas, thib ob tshuaj xyuas, 3 |
| Siab Hlaws PHAJ | Q245R, Q345R, Q370R, 16mNnnidr, 09mnnidr, 1cr7gr7mr60, SA516GR11, SA387GR12, SA387GR22, P265, P255, P355GHGE, Q245R (r {{{{{{hic), Q345r (r {30} {30} {{ | 3 - 300 | 8650 | Normalizing, tempered, tswj dov, kub dov, kub dov, kub tshuaj xyuas, thib ob tshuaj xyuas, 3 |
| High - lub zog phaj | Wh785d / E, Q960D / E, Q890D / e, WHE, WEBT0D, Q690D, Q690D / E | 8 - 120 | 3086.352 | Quenched thiab tempered |
| Hnav - ion reistant phaj | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched thiab tempered |
| Choj Phaj | Q235QC, Q345QC, Q370C, Q420qc, Q445QDNH, Q345QDNH, Q34QDNH,}} {} t - 2 | 8 - 200 | 2853.621 | Kub Rolling, Noomized, Kub Rolling Mwj MOV MOV, QUEENED + Toubness thiab Brittleness |
