Puas yog ASTM A36 sib npaug rau S235JR?
Qhov no yog ib qho piv txwv ntawm kev sib piv thiab muaj peev xwm tsis meej pem hauv kev yuav khoom thoob ntiaj teb thiab tsim qauv.
Cov lus teb luv luv yog: Tsis yog, ASTM A36 tsis yog ncaj qha, ntawv pov thawj sib npaug rauS235 JR(los yog S235J2). Thaum lawv feem ntau siv rau cov ntawv zoo sib xws, lawv tau teev nyob rau hauv cov txheej txheem sib txawv nrog qhov sib txawv tseem ceeb hauv kev xav thiab kev xav tau.
A36 khoom yog dab tsi?
Cov khoom siv A36 yog cov khoom siv carbon steel uas txhais los ntawm ASTM A36 specification, ua haujlwm zoo tshaj plaws thiab kev lag luam dav dav - lub hom phiaj tsim steel hauv North America.** Nws yog tus yam ntxwv los ntawm qhov tsawg kawg nkaus lub zog ntawm 36,000 psi (250 MPa), zoo ductility, thiab zoo heev weldability thiab fabrication zog. Feem ntau muab rau hauv cov duab, daim hlau, thiab cov tuav, nws yog qhov kev xaiv zoo tshaj plaws rau ntau yam kev siv xws li lub tsev thav duab, txuas hniav, tshuab hauv paus, thiab cov khoom siv dav dav uas tsis tas yuav muaj zog los yog tshwj xeeb toughness. Nws txoj kev siv dav dav yog tsav los ntawm nws tus nqi qis, npaj muaj, thiab zoo - nkag siab tus cwj pwm raws li tus qauv tsim qauv.
S235JR khoom yog dab tsi?
S235JR cov ntaub ntawv yog cov khoom tsis yog- alloy structural steel qib tau teev nyob rau hauv European tus qauv EN 10025-2, tus yam ntxwv los ntawm qhov tsawg kawg nkaus lub zog ntawm 235 MPa rau thicknesses txog 16 hli. Lub "S" qhia txog cov qauv hlau, "235" nws lub zog yield, "J" qhia tias cov hlau raug tua (tag nrho deoxidized) nrog cov khoom muaj feem cuam tshuam, thiab "R" txhais tau tias nws raug kuaj ntawm chav tsev kub (+20 degree) qhov twg nws yuav tsum nqus tsawg kawg 27 Joules. Nws yog ib qho dav - lub hom phiaj, tus nqi- cov hlau zoo nrog zoo weldability thiab formability, dav siv nyob rau hauv lub tsev thav duab, industrial lug, thiab dav fabrication rau zoo li qub daim ntaub ntawv nyob rau hauv nruab nrab climates, qhov uas tsis muaj-temperature cuam tshuam toughness tsis yog ib qho tseem ceeb tsim yuav tsum tau.
Nov yog cov ncauj lus kom ntxaws sib piv txog A36 thiab S235JR
Sib piv Core: A36 vs. S235JR
| Feature | ASTM A36 (Tebchaws Asmeskas) | S235JR (EN 10025-2) (EU) |
|---|---|---|
| Txoj Cai Kev Cai | Kev ua tau zoo-raws li. Feem ntau txhais cov khoom siv kho tshuab. Chemistry yog theem nrab thiab tsis tshua muaj kev txwv. | Kev sib sau -raws li. Txhais cov kev txwv nruj tshaj plaws ntawm cov tshuaj, nrog rau cov khoom siv kho tshuab raws li qhov tshwm sim. |
| Qhov tseem ceeb tshuaj txawv | Carbon (C): Max 0.26% (txog 0.29% rau cov phaj tuab). Tsis muaj qhov yuav tsum tau ua deoxidation xyaum. Nws tuaj yeem muab tau raws li rimmed, semi-tua, lossis tua hlau. |
Cov pa roj carbon (C): Max 0.17%. Yuav tsum tau "R"=Rimmed steel. (Rau S235J2: "J2"=tua hlau). Qhov no yog qhov sib txawv ntawm qhov sib txawv ntawm metallurgy. |
| Yield zog (ReH) | Ntau dua los yog sib npaug li 250 MPa (36 ksi) rau txhua daim duab, daim hlau, thiab cov tuav mus txog 200mm tuab. | Ntau dua los yog sib npaug rau 235 MPa rau thickness Tsawg dua los yog sib npaug rau 16 hli (tsawg dua nrog tuab). |
| Tensile zog (Rm) | 400 - 550 MPa (58-80 ksi) | 360 - 510 MPa |
| Elongation (A₅) | Ntau dua lossis sib npaug li 20% (rau daim hlau Tsawg dua lossis sib npaug li 200mm) | Ntau dua lossis sib npaug li 26% (rau thickness Tsawg dua lossis sib npaug li 40mm) |
| Impact Toughness | Tsis xav tau los ntawm lub neej ntawd. Muaj peev xwm teev tau raws li qhov yuav tsum tau ua ntxiv ("Charpy V-notch test"). | "R"=Chav ntsuas kub (Ntau dua lossis sib npaug rau 27J ntawm +20℃). Qhov no yog qhov yuav tsum tau ua. |
Vim li cas A36 thiab S235JR tsis yog qhov sib npaug ncaj qha
1. Cov ntsiab lus Carbon & Weldability:A36 tso cai ntau cov pa roj carbon ntau (max 0.26-0.29%) piv rau S235JR's 0.17% max. Qhov no muab S235JR qhov zoo sib xws hauv weldability, raws li nws qhov qis Carbon Equivalent (CEV) txo qhov kev pheej hmoo ntawm qhov txias txias. Ib daim A36 nrog cov pa roj carbon nyob ze nws cov kev txwv sab sauv yuav tsum tau ceev faj ntau dua cov txheej txheem vuam.
2. Metallurgical State:S235JR tshwj xeeb yog rimmed steel. Nws muaj ib tug tshwj xeeb solidification qauv nrog ib tug purer nto txheej, uas yog zoo heev rau txias forming, tab sis yuav ua tau rau cov sib txawv nyob rau hauv chemistry. A36 tuaj yeem raug rimmed, semi-tua, lossis tua, yog li nws lub suab sab hauv thiab cov qauv tsim tsis tau lees paub.
3.Impact Toughness:Qhov no yog qhov kev sib txawv tseem ceeb. S235JR yuav tsum xeem dhau Charpy cuam tshuam ntawm chav tsev kub. Rau ASTM A36, kev ntsuam xyuas cuam tshuam tsis yog qhov yuav tsum tau ua tshwj tsis yog hais meej meej los ntawm tus neeg yuav khoom. Rau cov qauv uas muaj dynamic loads los yog txias txias, qhov no yog ib tug loj specification txawv.
4. Lub zog:A36 muaj qhov tsawg kawg nkaus tawm lub zog (250 MPa) dua S235JR (235 MPa). Tus tsim qauv siv S235JR tsis tuaj yeem hloov pauv A36 thiab cia siab tias muaj kev nyab xeeb zoo ib yam yam tsis muaj kev suav rov qab, thiab lwm yam -versa.
Xaus:Ib txwm saib lawv zoo ib yam tab sis cov qib sib txawv. Qhov kev xaiv raug yog nyob ntawm tus qauv tsim qauv, cov ntawv pov thawj xav tau, vuam specifications, thiab kev pabcuam ib puag ncig. Tsis txhob suav qhov sib npaug yam tsis muaj kev siv tau zoo.
1. Dab tsi yog SA36 steel feem ntau siv rau?
SA36 yog qhov dav siv dav tshaj plaws - lub hom phiaj steel qauv nyob rau hauv North America, feem ntau yog ua hauj lwm nyob rau hauv lub tsev thav duab, txuas hniav, cov cuab yeej siv, thiab cov fabrication dav uas yuav tsum tau muaj zog thiab weldability zoo.
2. Lub zog ntawm SA36 steel yog dab tsi?
SA36 muaj qhov tsawg kawg nkaus tawm lub zog ntawm 36,000 psi (250 MPa), uas yog lub hauv paus rau nws lub npe ("36") thiab ua rau nws haum rau ntau yam ntawm cov qauv siv.
3. Puas yog SA36 steel weldable?
Yog lawm, SA36 yog weldable heev siv txoj kev zoo li SMAW, GMAW, thiab FCAW. Txawm li cas los xij, preheating tej zaum yuav tsim nyog rau cov seem tuab los yog cov pob qij txha uas tsis muaj zog vim nws cov ntsiab lus carbon tsis sib xws.
4. SA36 txawv ntawm SA572 Qib 50 li cas?
SA36 muaj lub zog qis dua (36 ksi vs . 50 ksi) thiab yog cov pa roj carbon steel, thaum SA572 Qib 50 yog siab - zog qis- alloy (HSLA) steel nrog lub zog zoo dua - rau - qhov hnyav piv thiab atmospheric corrosion kuj.
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.
