Qhov txawv ASTM A283 vs ASTM A709 weathering resistance steel ntawv

Raws li kev nqis peev thoob ntiaj teb kev lag luam nrawm nrawm, engineers, cov neeg cog lus, thiab cov neeg yuav khoom tau tsom mus rau kev xaiv cov qauv hlau zoo rau lawv cov haujlwm.

Ntawm cov kev qhia dav dav, ASTM A283 thiabASTM A709 Cov Lus Qhia Tshwj Xeebsawv cev rau ob pawg sib txawv ntawm cov hlau phaj-txhua qhov tsim los rau cov kev xav tau sib txawv thiab kev siv ib puag ncig.

Cov kab lus no muab cov ncauj lus kom ntxaws thiab ua tau zoo sib piv los pab cov kws tshaj lij hauv kev tsim choj, kev tsim vaj tsev, kev tsim steel, thiab kev tsim vaj tsev ua haujlwm ua cov ntaub ntawv txiav txim siab.

ASTM A283 yog qib carbon steel phaj feem ntau siv hauv kev tsim kho thiab kev siv engineering. Nws yog lub npe hu rau nws:

Tus nqi qis thiab kev lag luam siab

Zoo weldability thiab formability

Kev tsim nyog rau qis-load thiab tsis yog- cov qauv tseem ceeb

Cov txheej txheem suav nrog Qib A, B, C, thiab D, nrog A283 Qib C yog siv dav tshaj plaws vim nws lub zog sib npaug thiab ua haujlwm tau zoo.

Cov ntawv thov ntawm A283 Steel

Cia tank thiab roj tank

Lub teeb structural Cheebtsam

General siv steel phaj

Tsis yog - qhov tseem ceeb engineering

Chemically, A283 muaj cov pa roj carbon tsawg thiab tsawg alloying cov ntsiab lus, ua rau nws yooj yim rau kev tab sis txwv nws lub zog thiab toughness piv rau siab -kev ua tau zoo steels.

ASTM A709 tshwj xeeb yog tsim los rau kev loj thiab kev tsheb ciav hlau txuas hniav, muab lub zog zoo dua, ua haujlwm ntev, thiab ua haujlwm tau zoo nyob rau hauv kev thauj khoom hnyav thiab ib puag ncig hnyav. Nws suav nrog ntau qib nrov:

A709 qib 36

A709 Qib 50

A709 Qib 50W (weathering steel)

HPS 50W / HPS 70W (High -Kev Ua Haujlwm Hlau)

Qhov zoo ntawm A709 Steel

High yield zog

Qib 50: Ntau dua lossis sib npaug li 345 MPa

Zoo heev cuam tshuam toughness
Haum rau kev qaug zog -ib puag ncig txuas txuas

Kev xaiv corrosion kuj
Cov qib huab cua (50W / HPS) txo qhov ntev - cov nqi tu lub sijhawm

Txhim kho weldability thiab toughness hauv HPS qib
Qhov zoo tshaj plaws rau seismic lossis qis - qhov kub thiab txias

Cov ntawv thov ntawm A709 Steel

Choj girders thiab kab teeb

Choj lawj daim hlau

Truss thiab arch structures

Hnyav - thauj khoom cov khoom siv

Nrog nws cov kev sib xyaw ua ke ntawm lub zog thiab ruaj khov, A709 feem ntau yuav tsum tau ua hauv lub teb chaws tus choj specifications.

A709 muab lub zog ntau dua, tawv, thiab durability- ua rau nws xaiv qhov zoo tshaj plaws rau cov txuas hniav, ntev -span qauv, thiab siab -load puag ncig.

Vim tias nws muaj cov ntsiab lus alloying ntau dua thiab yuav tsum ua kom tau raws li qhov yuav tsum tau ua kom nruj, A709 steel nqi ntau dua A283. Txawm li cas los xij:

Rau pob nyiaj siv -rhiab heev, qis- cov haujlwm thauj khoom, A283 muaj tus nqi zoo heev- ua haujlwm tau zoo.

Rau cov choj, thaj chaw seismic, huab cua txias, lossis siab -cov qauv kev qaug zog, A709 yog qhov pom zoo- feem ntau yuav tsum tau ua - tus qauv.

Cov kws tshaj lij hauv kev lag luam hais tias kev xaiv cov khoom siv yuav tsum yog raws li kev xav tau ntawm cov qauv, tsis yog tus nqi ib leeg.

Raws li kev tsim kho vaj tse txuas ntxiv mus thoob ntiaj teb, kev thov rau ASTM A709 steel yog nthuav dav, thaum A283 tseem yog qhov kev xaiv txhim khu kev qha rau kev tsim kho thiab kev tsim cov tank.

Hu rau tam sim no

A709 qib 50W steel yog dab tsi?

ASTM A709-50W yogtus qauv specification rau cov qauv steel feem ntau nyob rau hauv fabrication ntawm steel choj. ASTM A709-50W npog lub zog siab, tsis tshua muaj cia steel qauv duab, daim hlau thiab tuav.

ASTM A709 steel qib yog dab tsi?

ASTM A709 yog tus qauv Specification rau Cov Hlau Hlau rau Cov Txuas Txuas thiab suav nrog cov pa roj carbon, siab - lub zog qis- alloy, thiab quenched thiab tempered alloy steels siv los ua cov phiaj xwm hauv kev tsim cov choj. SSAB muaj tsib qib nram qab no ntawm A709;36, 50, 50W, HPS 50W thiab HPS 70W.

Dab tsi yog qhov txawv ntawm ASTM A572 Qib 50 thiab ASTM A709 Qib 50?

A572 Qib 50: Siv dav hauv kev siv cov qauv, nrog rau cov tsev, cov tsev sib kis, cov khoom siv, thiab kev tsim kho dav dav. Nws tsis yog tshwj xeeb optimized rau choj. A709 Qib 50: Feem ntau siv rau kev tsim kho choj thiab lwm cov qauv uas txhim kho toughness thiab weldability yog qhov tseem ceeb.

ASTM A709 qib 50 yog dab tsi?

Qib 50 steel ntawm qhov kev qhia tshwj xeeb no yuav tsum muaj lub zog tsawg kawg nkaus ntawm 50 ksi. Siv los ua cov tswv cuab hauv kev tsim choj los yog rau cov qauv zoo sib xws.

Dab tsi yog qhov txawv ntawm ASTM A36 thiab A709?

ASTM A709 qib 36 yog cov khoom siv txuas hniav uas muaj cov pa roj carbon ntxiv rau lub zog thiab hardenability ntawm cov hlau.A36 muaj tsawg dua 0. 30% carbon thiab yog li, tsis muaj siab hardenability. ASTM A709 qib 36 steel phaj tau txhim kho corrosion kuj thiab tuaj yeem siv rau sab nraum zoov.

ASTM A572 qib 50 sib npaug li cas?

ASTM A572 Qib 50 yog sib npaug rau ntau qib steel, nrog rau qhov sib npaug thoob ntiaj teb feem ntau yog S355JR (European standard) thiab Q345B (Suav tus qauv). Qhov sib npaug zoo tshaj yog nyob ntawm qhov kev xav tau tshwj xeeb, yog li nws yog qhov zoo tshaj plaws los tham txog cov khoom tshwj xeeb thiab tus kws tshaj lij kom paub meej tias kev sib haum xeeb.

Dab tsi yog qhov txawv ntawm ASTM A36 thiab ASTM A572 GR 50?

Raws li tau hais ua ntej,A36 yog hlau uas muaj qhov tsawg kawg nkaus tawm los ntawm 36,000 PSI. Qib no muab nws lub zog los ntawm kev sib xyaw ntawm carbon thiab manganese. Ntawm qhov tod tes, A572-50, piv txwv li, yog ib hom hlau uas muaj qhov tsawg kawg nkaus yield zog ntawm 50,000 PSI.

Qhov txawv ntawm A572 thiab s355 yog dab tsi?

Hauv kev xaus, ob qho tib si ASTM A572 Qib 50 thiab S355JR yog cov kev xaiv zoo tshaj plaws rau kev siv steel hlau, nrog rauASTM A572 Qib 50 muab kev muaj peev xwm ntau dua thiab S355JR muab ntau yam thiab siv dav hauv European kev tsim kho.

Puas yog A572 steel corrosion resistant?

A572 steel feem ntau yog siv rau hauv cov qauv siv vim nws lub zog siab, ductility, weldability thiabcorrosion kuj. Cov ntawv thov no suav nrog cov qauv tsim, cov khoom siv ntxiv, txuas hniav, skyscrapers thiab tsev.