Tus nqi ntawm ASTM A537 Class 3 yog dab tsi?
Raws li lig 2025, tus nqi rauASTM A537 Qib 3siab nkoj steel phaj feem ntau yog los ntawm$800 rau $3,000 ib metric ton. Standard daim hlau (20-50mm) feem ntau hover ib ncig$900–$1,500 ib tuj, thaum tshwj xeeb, thicker, lossis customized, quenched thiab tempered daim hlau tuaj yeem tsav cov nqi mus rau qhov kawg siab dua.
ASTM A537 Chav Kawm 3 yog cov cua sov tshwj xeeb- kho qib steel siv hauv kev tsim kho ntawm fusion-welded siab hlab ntsha uas ua haujlwm nyob rau hauv siab - kev ntxhov siab. Cov khoom pib ua carbon-manganese-silicon alloy thiab raug rau ob- theem kev kho cua sov: quenching hauv dej los yog roj, ua raws li tempering. Cov txheej txheem no yog qhov tseem ceeb rau kev tsim cov khoom siv kho tshuab uas tsim nyog los tiv thaiv lub siab hnyav pom hauv cov boilers thiab tshuaj reactors. Chav Kawm 3 yog qhov tseem ceeb tshwj xeeb rau nws cov txiaj ntsig zoo zog hauv cov ntsuas tuab, kom ntseeg tau tias txawm tias lub phaj thickness nce mus rau 4 ntiv tes, cov khoom tseem muaj zog txaus kom ua tau raws li cov cai nruj nruj.
Cov yam ntxwv tseem ceeb
Weldability:Cov yam ntxwv fusion zoo heev thaum siv qis - hydrogen electrodes thiab ua ntej - cua sov.
Machineability:Txawm hais tias muaj zog dua los ntawm quenching, nws tuaj yeem drilled thiab txiav tau zoo nyob rau hauv ib puag ncig khw.
Resistance rau Temper Embrittlement:Tsim kom nyob ruaj khov thaum ua haujlwm siab - kub.
High Yield-rau-Tensile Ratio:Muab ib qho kev kwv yees tau thiab siab ua ntej ua ntej deformation mus tas li.
Qib Qib
ASTM A537 Cov Lus Qhia:Tus qauv rau cua sov-kho C-Mn-Si siab hlab ntsha steel.
Chav Kawm 3:Denotes lubQuenched thiab Temperedmob tshwj xeeb optimized rau hnyav thicknesses.
Chav Kawm 1:Denotes lubLi qubmob.
Chav Kawm 2:Denotes tus qauvQuenched thiab Temperedmob.
Kev sib piv nrog ASTM A299
Kev kho cua sov:A537 Chav Kawm 3 yog quenched thiab Tempered; A299 feem ntau yog raws li - dov los yog Normalized.
Lub zog ntau yam:A537 Class 3 tawm los (60 ksi) yog siab dua A299 Qib B (47ksi).
Nthuav Toughness:A299 tsis yog tshwj xeeb tsim los rau qis -kub toughness, whereas A537 Class 3 tau ntawv pov thawj rau cov kev pab cuam.
Silicon Cov ntsiab lus:A537 Chav Kawm 3 muaj ntau silicon (0.15--0.50%) rau deoxidation zoo dua piv rau A299.
Cov ntawv thov siv
Thick -Walled Pressure Vessels:Siv nyob rau hauv siab -siab reactors thiab separators.
Nuclear fais fab kev lag luam:Cov khoom tseem ceeb hauv kev ntim khoom thiab cua txias.
Roj & Roj Refining:Heavy -cov dej distillation kab thiab cia spheres.
Offshore Engineering:Cov qauv tsim rau qhov sib sib zog nqus- dej platforms hauv huab cua txias.
Dab tsi yog qhov cuam tshuam toughness ntawm ASTM A537 Chav Kawm 3?
ASTM A537 Chav Kawm 3 tau zoo heevcuam tshuam toughness, uas txhais tau hais tias nws tuaj yeem nqus tau ntau lub zog ua ntej tsis ua haujlwm. Qhov no yog qhov tseem ceeb tshwj xeeb hauvsiab -siabib puag ncig zoo licov hlab ntsha siabthiabboilers, qhov twg tam sim ntawd cuam tshuam los yog thermal shocks tuaj yeem ua rau muaj kev puas tsuaj loj. Lub steel lub toughness yog txhim khu kev qha los ntawm nws quenching thiab tempering txheej txheem, kom ntseeg tau tias nws tseem resilient nyob rau hauv dynamic loading tej yam kev mob.
ASTM A537 Chav Kawm 3 yog dab tsi?
Covyield zogASTM A537 Chav Kawm 3 yog50 ksi (345 MPa)rau thicknesses mus txog2.5 nti (64 hli), thaum rau cov phaj tuab (txog li4 ntiv), lub zog tawm los poob rau45 ksi (310 MPa). Qhov no high yield zog ua rau nws zoo tagnrho rau cov ntawv thov kev koom tessiab siab, zoo licov hlab ntsha siabthiabboilers, kom ntseeg tau tias cov hlau tuaj yeem tiv taus cov kev ntxhov siab tseem ceeb yam tsis muaj deformation mus tas li.
Cov ntsiab lus carbon ntawm ASTM A537 Class 3 yog dab tsi?
ASTM A537 Chav Kawm 3 muaj acov ntsiab lus carbonntawm0.15% rau 0.22%, uas contributes rau nwsweldability, zog, thiabtawv. Cov ntsiab lus carbon tswj tau pab sib npaug ntawm cov khoom siv lub zog nrog nws lub peev xwm los welded yam tsis muaj kev tawg, ua rau nws haum rauwelded qauvhauvcov hlab ntsha siabthiabkub exchangers, qhov twg ob qho tib si mechanical zog thiab weldability tseem ceeb heev.
Cov cuab yeej cuab tam rau A537CL3 steel phaj:
| Thickness (hli) | Yield zog (Ntau dua lossis sib npaug rau Mpa) | Tensile zog (Mpa) | Elongation nyob rau hauv ntau dua los yog sib npaug rau ,% | |
| 200 hli | 50 hli | |||
| T Tsawg dua lossis sib npaug li 65 | 380 | 550-690 | ... | 22 |
| 65<> | 345 | 515-655 | ... | 22 |
| 100<> | 275 | 485-620 | ... | 20 |
Tshuaj muaj pes tsawg leeg rau A537CL3 steel phaj (Kub ntsuas Max%)
| Cov ntsiab lus tseem ceeb ntawm A537CL3 steel phaj | |||||||||
| Thickness (hli) | C | Si | Mn | P | S | Cu | Ni | Cr | Mo |
| T Tsawg dua lossis sib npaug li 40 | 0.24 | 0.13-0.55 | 0.64-1.46 | 0.035 | 0.035 | 0.38 | 0.28 | 0.29 | 0.09 |
ASTM A537 Chav Kawm 3 yog dab tsi?
ASTM A537 Chav Kawm 3 yog qhov siab -lub zog, quenched thiab tempered steel siv nyob rau hauv cov ntawv thov uas yuav tsum tau muaj kev tiv thaiv siab thiab kub. Nws yog tsim rau kev tsim kho ntawmcov hlab ntsha siab, boilers, thiabkub exchangers. Cov hlau txhim kho cov khoom siv kho tshuab, xws liyield zogthiabtensile zog, ua kom nws zoo tagnrho rau siv nyob rau hauv ib puag ncig uas muaj kev ntseeg siab, durability, thiab toughness yog qhov tseem ceeb rau kev nyab xeeb kev ua haujlwm.
Cov tshuaj muaj pes tsawg leeg ntawm ASTM A537 Class 3 yog dab tsi?
ASTM A537 Chav Kawm 3 feem ntau yog tsim los ntawmcarbon(0.15% rau 0.22%),manganese(1.10% rau 1.60%), thiabsilicon(0.20% mus rau 0.50%). Lwm yam alloying ntsiab, xws lichromium, molybdenum, thiab me me ntawmphosphorusthiableej faj, pab txhawb rau nwszog, tawv, thiabcorrosion kuj. Qhov kev sib xyaw ua ke ntawm cov ntsiab lus no tso cai rau cov hlau tuaj yeem tiv taus qhov kub thiab txias thaum tswj kev ua haujlwm zoo hauv kev xav tau ib puag ncig.
Lub zog tensile ntawm ASTM A537 Chav Kawm 3 yog dab tsi?
ASTM A537 Chav Kawm 3 muaj atensile zogxws li los ntawm70 ksi rau 90 ksi (480 MPa rau 620 MPa)rau daim hlau mus txog2.5 ntihauv thickness. Rau cov phaj tuab dua 2.5 ntiv tes, lub zog tensile txo me ntsis. Lub zog tensile siab no tso cai rau cov khoom siv ua haujlwm tau zoo nyob rau hauv kev ntxhov siab thiab kev ua haujlwm siab, ua rau nws tsim nyog rau kev thov xws licov hlab ntsha siabthiabboilers.
ASTM A537 Class 3 puas tuaj yeem siv rau hauv sub-zero ib puag ncig?
ASTM A537 Chav Kawm 3 tsis yog tsim los siv rau hauv sub-zero ib puag ncig, vim nws qhov tawv thiab ductility yuav txo qis ntawm qhov kub thiab txias. Rau kev siv txias, cov ntaub ntawv zoo listainless hlaulos yog tshwj xeebcryogenic hlauzoo dua vim lawv khaws lawv lub zog thiab toughness txawm nyob rau hauv qhov kub tsis tshua muaj. Txawm li cas los xij, rau siab -kev siv kub, ASTM A537 Class 3 excels vim nws cov thermal kuj.
Cov kev lag luam twg siv ASTM A537 Class 3?
ASTM A537 Chav Kawm 3 yog dav siv hauv kev lag luam uas xav tau cov khoom siv nrog lub zog siab thiab ua haujlwm ntev hauv siab - siab, siab - qhov kub thiab txias. Cov lag luam tseem ceeb suav nrogroj & roj, chemical ua, tsim hluav taws xob, thiabpetrochemicals. Cov khoom siv zoo tagnrho rau kev tsim khocov hlab ntsha siab, boilers, kub exchangers, thiabtshuaj reactorsqhov twg kev ncaj ncees ntawm cov qauv yog qhov tseem ceeb los xyuas kom muaj kev nyab xeeb ntawm kev ua haujlwm thiab kev ua haujlwm ntev -.
Puas yog ASTM A537 Class 3 weldable?
Yog lawm, ASTM A537 Class 3 yogweldablesiv cov txheej txheem vuam xws liMIG, TIG, thiabnplaum welding. Preheating thiab post-weld heat treatment (PWHT) tej zaum yuav tsim nyog los tiv thaiv kev tawg, tshwj xeeb tshaj yog nyob rau hauv cov seem tuab. Cov hlauweldabilityua rau nws zoo tagnrho rau complex fabrications hauv industries xws lichemical uathiabtsim hluav taws xob, qhov twg cov pob qij txha welded feem ntau yog siv rau hauv kev tsim cov hlab ntsha siab thiab lwm yam tseem ceeb.
Lub hardness ntawm ASTM A537 Class 3 yog dab tsi?
CovBrinell hardnessASTM A537 Chav Kawm 3 feem ntau yog nyob rau hauv qhov ntau ntawm200-250 HB, muab qhov zoo sib npaug ntawmzogthiabtawv. Qhov hardness no ua rau cov khoom haum rauhnav-resistantkev siv zoo licov hlab ntsha siabthiabboilers, qhov twg ob qho tib si cuam tshuam tsis kam thiab lub zog txhua yam yog qhov tseem ceeb rau kev ua kom lub zog ntawm cov khoom raug rau kev ntxhov siab thiab thermal cycling.
Tau txais cov lus muaj nuj nqis rau ASTM A537 Chav Kawm 3, Hu rau GNEE Steel
