Qhov txawv ntawm SA 283 C thiab SA 36 yog dab tsi?
nws qhov sib txawv ntawm SA-283 Qib C thiab SA-36 yog qhov tseem ceeb, txawm tias ob qho tib si yog "me me steels." SA-36 yog cov qauv hlau rau cov tsev thiab cov txuas hniav, thaum SA-283 yog cov khoom siv rau cov hlab ntsha siab thiab kev tsim kho dav dav nrog qis zog thiab kev tswj xyuas zoo.
SA-283 Qib C yog qhov qis-rau- nruab nrab tensile lub zog carbon steel phaj teev nyob rau hauv ASME Boiler thiab Pressure Vessel Code, muab los ntawm ASTM A283. Tus yam ntxwv los ntawm qhov tsawg kawg nkaus tawm lub zog ntawm 30 ksi (205 MPa) thiab yuav tsum tau manganese yam tsawg kawg nkaus (0.90% rau Qib C), nws yog tsim los rau weldability zoo, formability, thiab sab hauv soundness. Nws thawj daim ntawv thov yog nyob rau hauv fabrication ntawm tsawg- cov hlab ntsha siab, cov dej tso tsheb hlau luam, cov chaw cia khoom, thiab lwm yam kev tsim kho uas txhim khu kev qha kev ua tau zoo nyob rau hauv nruab nrab kev ntxhov siab thiab kev ua haujlwm yog qhov tseem ceeb tshaj qhov siab tshaj plaws.
SA-36 (los yog ASTM A36) yog ib qho dav dav -lub hom phiaj carbon structural steel thiab cov qauv hlau feem ntau hauv North America. Txhais los ntawm qhov tsawg kawg nkaus yield zog ntawm 36 ksi (250 MPa), nws yog ib qho kev ua tau zoo -raws li specification qhov twg lub rooj sib tham txhua yam khoom siv ua ntej tshaj cov tshuaj txwv nruj. Nws cov txiaj ntsig tseem ceeb yog tus nqi qis, muaj txiaj ntsig zoo hauv txhua daim duab (beams, phaj, tuav), thiab weldability zoo. SA-36 yog cov khoom siv ua ntej rau ntau yam ntawm cov qauv siv, nrog rau cov thav ntawv, txuas hniav, tshuab hauv paus, thiab kev tsim cov khoom siv dav dav uas tsis tas yuav muaj lub zog siab lossis tshwj xeeb toughness.
Core Sib piv Table txog SA 283 C thiab SA 36
| Feature | SA-36/ASTM A36 | SA-283 Qib C / ASTM A283 Qib C |
|---|---|---|
| Lub Hom Phiaj Tsim Tseem Ceeb | General Structure (tsev, txuas hniav, ncej) | Lub Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj & Kev Tsim Kho Kev Siv Hluav Taws Xob (tank, qis- cov thawv ntim siab, tsis yog- cov qauv tseem ceeb) |
| Txoj Cai Tswjfwm | AISC (Lub Tsev), AASHTO (Bridges) | ASME Boiler & Pressure Vessel Code (BPVC) |
| Cov yam ntxwv tseem ceeb | Siab zog, kev ua tau zoo -raws li spec. | Lub zog qis dua, zoo dua sab hauv soundness rau kev sib sau / vuam nyob rau hauv siab. |
| Yield zog (min) | 36 ksi (250 MPa) | 30 ksi (205 MPa) |
| Tensile zog (min) | 58-80 ksi (400-550 MPa) | 55-65 ksi (380-450 MPa) |
| Chemical Philosophy | Kev ua tau zoo-raws li: Chemistry txwv yog qhov siab tshaj plaws; kev sib ntsib mechanical zog yog thawj. | Kev sib xyaw-raws li: Muaj kev nruj dua, lav qhov tsawg kawg nkaus rau cov ntsiab lus tseem ceeb (piv txwv li, Mn) kom ntseeg tau tias muaj kev sib tw weldability thiab formability. |
| Hom Carbon Cov ntsiab lus | Txog li 0.26% (tuaj yeem siab dua rau daim hlau) | 0.24% max (tighter tswj) |
| Manganese Cov ntsiab lus | Txog li 0.90% (tsis muaj yam tsawg kawg nkaus) | 0.90% min (rau Qib C) - qhov tseem ceeb rau lub zog thiab kev ua kom zoo ntawm cov nplej. |
| Kev xyaum deoxidation | Tau rimmed, semi-tua, lossis tua. | Yuav tsum yog ib nrab-tua lossis tua kom muaj suab nrov sab hauv. |
| Daim ntawv thov tseem ceeb | Beams, kem, phaj hauv load- bearing structures. | Plhaub, taub hau, nyob twj ywm rau qis - mus rau - cov hlab ntsha nruab nrab, cov dej tso dej, cov thawv ntim khoom. |
| Kev ntsuam xyuas cuam tshuam | Tsis tas yuav tsum tau (tuaj yeem ntxiv). | Tsis xav tau los ntawm lub neej ntawd, tab sis feem ntau invoked los ntawm lub nkoj lis dej num. |
Kev piav qhia ntxaws ntawm n SA 283 C thiab SA 36 Qhov txawv
1. Lub zog thiab lub hom phiaj
SA-36 muaj zog dua (36 ksi yield vs . 30 ksi). Nws yog engineered rau cov qauv kev ua tau zoo hauv cov tsev thiab txuas hniav uas nqa cov khoom siv tsawg yog qhov tseem ceeb.
SA-283 Qib C tsis muaj zog tab sis yog tsim los rau fabricability thiab kev ntseeg siab nyob rau hauv cov ntaub ntawv pressurized. Nws lub zog qis dua yog offset los ntawm ntau dua ductility thiab uniformity, uas muaj kev nyab xeeb dua rau kev tsim rau hauv cov hlab ntsha thiab vuam nyob rau hauv kev ntxhov siab.
2. Chemistry: Qhov Tseem Ceeb Tseem Ceeb
Nov yog qhov tseem ceeb tshaj plaws kev sib txawv:
SA-36: Cov spec tso cai rau chemistry sib txawv raws li ntev raws li lub hom phiaj muaj zog. Lub tshav kub ntawm cov hlau tuaj yeem muaj cov manganese tsawg heev thiab tseem raug lees paub tias yog A36 yog tias nws muaj zog txaus.
SA-283 Qib C: Nws tswj hwm qhov tsawg kawg nkaus manganese cov ntsiab lus ntawm 0.90%. Qhov no ua kom lub zog zoo ib yam, zoo dua weldability, finer grain loj, thiab txhim kho toughness. Qhov kev lees paub ntawm chemistry no ua rau nws xav tau ntau dua thiab txhim khu kev qha rau kev tsim khoom tseem ceeb.
3. Zoo thiab suab nrov
SA-283 yuav tsum tau ib nrab-tua lossis tua cov hlau, uas txo cov porosity thiab cais, ua rau kom muaj suab nrov zoo dua-ib qho yuav tsum muaj rau kev tswj hwm.
SA-36 tuaj yeem muab tau raws li pheej yig dua rimmed steel, uas tuaj yeem muaj qhov khoob thiab tshuaj cais tawm, ua rau nws tsis tshua zoo rau cov ntawv thov tseem ceeb welded.
4. Txoj Cai Txais
SA-36 yog "tus huab tais" ntawm AISC lub tsev lis dej num.
SA-283 muaj npe nyob rau hauv ASME BPVC rau kev tsim cov code-stamped siab hlab ntsha thiab tso tsheb hlau luam. Kev siv SA-36 rau lub nkoj zoo li no yuav xav tau kev sim ntau ntxiv thiab yuav tsis tso cai los ntawm Tus Kws Tshuaj Ntsuam Xyuas.
SA 283 Qib C sib npaug li cas?
ASME SA 283 Gr C cov khoom sib npaug hauv EN tus qauv yog S235JR steel. S235JR steel muaj zoo plasticity, toughness thiab weldability, tej yam zog thiab zoo txias dabtsi yog khoov zog.
ASTM A283 Qib C yog dab tsi?
ASTM A283 Qib C yog qhov tshwj xeeb rau qis thiab nruab nrab tensile lub zog carbon steel daim hlau ntawm cov qauv zoo rau kev siv dav dav. ASTM A283 Qib C muaj qhov ntsuas qhov ua tau zoo ntawm 30 ksi.
Qhov txawv ntawm A283 C thiab A36 C yog dab tsi?
A36 muaj cov ntsiab lus qis dua piv rau A283 Qib C, ua rau nws yooj yim rau vuam thiab ductile ntau dua. Mechanical Properties: A283 Qib C: siab zog thiab siab yield point piv rau A36, ua rau nws haum rau siab - muaj zog daim ntawv thov.
Dab tsi yog qhov tso cai kev ntxhov siab rau A283 Qib C?
Cov qib carbon feem ntau, suav nrog Sa 283 Gr C, muaj qhov siab tshaj plaws tso cai ntawm 13,750psi.
Qhov txawv ntawm SA 283 C thiab SA 36 yog dab tsi?
Alloy Composition
Cov kev sib txawv no qhia tias A36 tej zaum yuav nyiam rau cov ntawv thov uas xav tau lub zog ntau dua thiab ua rau qaug zog zoo dua, thaum SA283 Qib C tuaj yeem tsim nyog rau cov ntawv thov uas cov khoom siv zog me ntsis tau txais thiab muaj peev xwm raug nqi ntau dua - zoo.
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.
