ASTM A612 / ASME SA612 Cov Lus Qhiayog asiab-lub zog carbon-manganese- silicon steel phajtsim tshwj xeeb rauwelded siab hlab ntsha thiab boilersua haujlwm ntawmnruab nrab mus rau qhov kub thiab txias.
ASTM A612 / ASME SA612 yog dab tsi?
ASTM A612 Cov Lus Qhia Tshwj Xeeb: Cov khoom siv ASTM
ASME SA612: Tib yam khoom siv rau hauv ASME Boiler & Pressure Vessel Code
Ob leeg xa mus rau lubtib qib steel, nrog zoo tib yam tshuaj thiab mechanical xav tau. Lub npe ASME yog siv thaum lub phaj siv raucode-stamped siab hlab ntsha.
Cov yam ntxwv tseem ceeb ntawm SA612 Steel Phaj
Siab zog siab lub nkoj zoo (PVQ) steel
Carbon-manganese-silicon alloy tsim
Zoo weldability nrog cov txheej txheem tsim nyog
Haum raunruab nrab thiab qis -kev pabcuam kub
Pab tauthinner phaj tsimpiv nrog cov pa carbon steels
Tej yam cuab yeej cuab tam
| Khoom | Yam yuav tsum tau muaj |
|---|---|
| Yam tsawg kawg nkaus Yield Strength | ~ 260 MPa (38 ksi) |
| Tensile zog | 485-620 MPa (70-90 ksi) |
| Elongation | Zoo ductility (nws txawv ntawm thickness) |
Chemical Composition (Qhov tseem ceeb tshaj plaws, tshwj tsis yog tau teev tseg)
| Element | Cov ntsiab lus (%) | Lub luag haujlwm hauv Kev Ua Haujlwm |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.25 | Balances lub zog thiab weldability |
| Manganese (Mn) | 1.00-1.50 | Txhim khu lub zog tensile thiab toughness |
| Silicon (Si) | 0.15-0.50 | Pab deoxidation thiab txhim kho lub zog |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.025 | Txo cov brittleness thiab txhim kho qhov ntswj toughness |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.025 | Minimizes kub tawg thaum vuam |
| Nickel (Ni) | Tsawg dua lossis sib npaug li 0.25 | Txhim kho qis -kub toughness |
| Chromium (Cr) | Tsawg dua lossis sib npaug li 0.25 | Txhim kho corrosion kuj |
| Carbon sib npaug (CE) | Tsawg dua lossis sib npaug li 0.48 | Xyuas kom zoo weldability |
Cov ntawv thov tseem ceeb
Critical Industrial Equipment:
LNG / Cryogenic Cia Tank(-40℃rau -196 degree)
Siab -Pressure Reactors(15-20 MPa) hauv petrochemical thiab refining
Hydrogenation nkojxav tau lub zog thiab toughness
Sour Gas Treatment Units(Resistant rau H₂S corrosion)
Nuclear Fais Fab Chaw Pabcuam Vessels(ASME NQA-1)
General Pressure Vessels:
Thaum tshav kub kub exchangers ua hauj lwm nyob rau hauv nruab nrab kub
High -cov kav dej siab
Lub tank cia rau cov kua thiab cov pa phem
Thaum tshav kub kub kho mob
Muab khoomraws li -rolledraws li tus qauv
normalizingtuaj yeem muab los ntawm kev pom zoo
Kev ntxhov siabfeem ntau yog siv tom qab kev tsim khoom yog tias xav tau los ntawm cov cai lossis cov kev pabcuam
Kev kho cua sov yuav tsum tau hais meej meej hauv kev yuav khoom.
Weldability thiab Fabrication
SA612 muabzoo weldabilitythaum cov txheej txheem siab- cov txheej txheem vuam ua raws li:
Tsawg- hydrogen vuam consumables
Tswj cua sov input
Preheating rau cov phaj tuab yog tias xav tau
PWHT raws li ASME code thiab lub nkoj thickness
Kev sib piv nrog PVQ Steels
| Qib | Yield zog | Tensile zog | Impact Temp. | Max Service Temp. | Kev siv yam |
|---|---|---|---|---|---|
| SIB 612 | 345 MPa rau | 570-725 MPa | -40 degree | 425 degree | High-siab, qis-temp, cov ntawv thov tseem ceeb |
| TIAB SA 516 Gr.70 | 230-207 MPa | 485-620 MPa | -30 degree | 454 degree | General - lub hom phiaj cov hlab ntsha siab (80% kev lag luam feem) |
| TIAB SA 515 Gr.60 | 172-159 MPa | 414-552 MPa | -29 degree | 345 degree | Tsawg-siab, ambient-temp applications |
Qhov tseem ceeb Distinction:
SA612 vs SA516 Gr.70: Zoo sib xws zog; SA612 nyiam txo cov thickness, SA516 Gr.70 nyiam toughness
SA612 vs SA515 Gr.60: SA612 muab lub zog ntau dua
SA612 vs SA537: SA612 yog tus nqi ntau dua - siv tau rau nruab nrab qis - kev pabcuam kub
Kev xaiv xaiv
Thaum xaiv SA612:
Pressure >10 MPa thiab kub <-30 degree
Kev poob phaus yog qhov tseem ceeb (piv txwv li, mobile lossis offshore applications)
Cov kev pabcuam qaub (H₂S tam sim no)
Qhov project specifications xav tau hwm zoo thiab ua haujlwm ntev
Thaum twg los xav txog lwm txoj kev:
Cov kev txwv nyiaj txiag nrog cov kev xav tau tsawg kawg nkaus (<10 MPa)
Kev pabcuam kub siab tshaj 425℃(siv SA516 Gr.70)
Thickness requirements >25mm (qee cov neeg tsim khoom muab cov thicknesses txuas ntxiv)
Xaus
ASTM A612 / ASME SA612 Cov Lus Qhiayog atus nqi-zoo, siab- lub zog siab lub nkoj steeluas txhawb nqa lub nkoj niaj hnub tsim los ntawm kev txo cov tuab yam tsis muaj kev cuam tshuam kev nyab xeeb lossis weldability. Nws yog qhov kev xaiv zoo tshaj plaws rau boilers thiab cov hlab ntsha siab ua haujlwm ntawmnruab nrab thiab qis kub.
GNEE STEELCov khoom siv tau ntawv pov thawj ASTM A612 / ASME SA612 steel daim hlau nrog tag nrho MTC, kev xaiv qhov cuam tshuam, thiab kev paub txog kev ua haujlwm thoob ntiaj teb.
GNEE Steel kuj muab ntau yam boilers thiab siab nkoj steel daim hlau, xws li A204 Qib B, A515 Qib 70, A537 Chav Kawm 1, SA387 Qib 11 Chav Kawm 1, P265GH, S537 Chav Kawm 2, P355Q, P275N, P355N, P69R lwm yam yog tias koj xav paub ntau ntxiv, steel daim hlau, koj tuaj yeem hu rau kev sab laj tus xovtooj ntawm +8615824687445 lossis xa email rauru@gneesteelgroup.com.Koj tuaj yeem sab laj nrog peb, thiab peb txaus siab los teb koj cov lus nug.
FAQ
Dab tsi yog cov khoom siv SA 612?
carbon-manganese-silicon steel phaj
SA612 raug tua carbon-manganese-silicon steel phaj ua rau cov hlab ntsha siab. Nws cov nplej zoo ua rau nws tsim nyog siv rau hauv nruab nrab thiab qis qhov kub thiab txias qhov kev cuam tshuam qhov tseem ceeb.
Dab tsi yog qhov muaj pes tsawg leeg ntawm ASTM A612?
ASTM A612 steel phaj yog siab -lub zog qis- alloy (HSLA) steel phaj tsim rau welded siab hlab ntsha. Nws muaj cov nominal muaj pes tsawg leeg ntawm carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, thiab tooj liab.
A612 steel yog dab tsi?
ASTM A612 specification yog Standard Specification rau Siab Vessel Phaj, Carbon Steel, Siab zog, rau nruab nrab thiab qis kub kev pab cuam. ASTM A612 encompasses carbon-manganese-silicon steel daim hlau npaj rau siv nyob rau hauv welded siab hlab ntsha rau nruab nrab thiab kub kev pab cuam.
Puas yog SA612 thiab A612 Steel Phaj yog tib yam khoom? Dab tsi yog qhov txawv ntawm Core?
Lawv yog tib hom hlau phaj. ASTM A612 yog cov qauv khoom siv, thaum ASME SA612 yog qhov tsim los tom qab ASTM A612 tau muab tso rau hauv ASME Boiler & Pressure Vessel Code, tshwj xeeb rau kev tsim cov khoom siv siab -cov kabmob.
Dab tsi yog Cov Qauv Txheej Txheem rau SA612 / A612 Steel Phaj? Puas muaj qhov txawv ntawm ASTM thiab ASME Versions?
Cov qauv kev tswj hwm yog ASTM A612 / A612M thiab ASME SA612. Tsis muaj qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab ntawm ob lub qauv; qhov sib txawv tsuas yog nyob rau hauv lawv cov txheej txheem siv tau.
Dab tsi yog Qib Sib npaug ntawm SA612 / A612 hauv Suav thiab European Cov Qauv? Lawv puas tuaj yeem siv los hloov pauv ncaj qha?
Cov qib sib npaug sib npaug suav nrog EN P355GH, DIN 1.0473, thiab GB Q345R. Txawm li cas los xij, lawv tsis tuaj yeem siv los ua qhov sib npaug ncaj qha. Lawv qhov kev tsim nyog yuav tsum raug lees paub raws li cov qauv tsim thiab kev pom zoo.
Dab tsi yog qhov Yield Strength thiab Tensile Strength ntawm SA612 / A612? Lawv puas txawv nrog txawv tuab?
Qhov tsawg kawg nkaus tawm lub zog ntawm SA612 yog kwv yees li 260 MPa, thiab nws lub zog tensile yog li ntawm 485-620 MPa. Raws li lub thickness nce, qhov tso cai tsawg kawg nkaus lub zog tuaj yeem txo qis me ntsis.
Dab tsi yog qhov qis -Tsuas Qhov Kev Ntsuas Hluav Taws Xob rau SA612/A612? Puas yog Cov Kev Xav Tau ntawm -40℃thiab -45℃Raws li?
Cov qauv feem ntau yuav tsum muaj kev cuam tshuam ntawm -40 degree, thaum kuaj ntawm -45℃tsis tas yuav tsum tau ua. Yog tias ib qhov project qhia txog qhov ntsuas -45 degree, yuav tsum tau kuaj xyuas qhov cuam tshuam ntxiv thiab qhia meej meej hauv daim ntawv cog lus.
Dab tsi yog qhov tsawg kawg nkaus thiab siab kawg kev pabcuam kub rau SA612/A612?
Qhov kev pom zoo qhov ntsuas kub tsawg kawg yog kwv yees li -40 degree, thiab qhov siab tshaj plaws kev khiav hauj lwm kub yog feem ntau nyob ib ncig ntawm 400 degree, nyob ntawm seb tus qauv tsim thiab kev pabcuam nruab nrab.
Dab tsi yog Carbon sib npaug ntawm ASME SA612? Puas yog Preheating yuav tsum tau rau Vuam?
Cov pa roj carbon sib npaug feem ntau yog nyob ib ncig ntawm 0.42-0.45. Preheating ntawm 50-120℃yog pom zoo rau vuam nruab nrab thiab tuab daim hlau. Cov khoom siv vuam siv feem ntau suav nrog qis-hydrogen electrodes xws li E7018 thiab E7016.
Dab tsi yog qhov niaj hnub Thickness Range ntawm SA612 / A612, thiab Dab tsi yog qhov siab tshaj plaws Customizable Thickness?
Lub thickness niaj hnub yog 6-100 hli. Qee cov hlau mills tuaj yeem muab cov thicknesses customized txog li 150 hli, raws li kev pom zoo ntawm lawv cov dov thiab kev kho cua sov.
Dab tsi yog Cov Txheej Txheem Kev Xa Khoom rau SA612 / A612?
Cov xwm txheej kev xa khoom muaj xws li As -Rolled (AR), Normalized (N), thiab Normalized + Tempered (N + T), nrog rau cov xwm txheej zoo li qub yog siv dav tshaj plaws.
Dab tsi yog Machinability ntawm SA612? Puas yog nws yooj yim rau kev tawg?
SA612 nthuav tawm kev txiav thiab khoov zoo heev. Thaum ua tiav nrog cov txheej txheem tsim nyog thiab preheating, nws tsis yog qhov ua rau tawg.
Dab tsi yog Qhov Zoo Tshaj Plaws rau Tsawg-Kev Siv Kub: SA612 lossis SA516 Gr.70?
SA612 muab kev ua haujlwm ruaj khov ntau dua hauv cov phaj tuab thiab siab - kev ntxhov siab ua haujlwm, thaum SA516 Gr.70 muab cov nqi zoo dua - ua haujlwm tau zoo hauv cov kev ua haujlwm zoo.
Q345R puas tuaj yeem siv los hloov SA612?
Q345R tuaj yeem siv los hloov pauv hauv qee qhov kev ua haujlwm rau tsis yog -ASME cov haujlwm. Txawm li cas los xij, kev hloov pauv tsis pom zoo rau cov haujlwm xa tawm lossis cov xwm txheej uas SA612 yog qhov yuav tsum tau ua los ntawm cov lus qhia tshwj xeeb.
Qhov txawv ntawm SA612 thiab SA537 Cl.2 yog dab tsi?
SA537 Cl.2 boasts lub zog ntau dua thiab qis -kev ua haujlwm kub tab sis los nrog tus nqi siab dua SA612. Nws tsim nyog rau kev ua haujlwm hnyav dua.
Puas yog SA612 Vessel Phaj haum rau LNG Cia Tank?
SA612 tsis pom zoo rau thawj LNG cia tso tsheb hlau luam ua haujlwm ntawm -162℃, tab sis nws tuaj yeem siv rau hauv LNG auxiliary systems lossis nruab nrab - mus rau qis qis.
Dab tsi yog Hydrogen -Induced Cracking (HIC) Resistance ntawm SA612 Steel Phaj?
Tus qauv SA612 tsis tso cai rau HIC cov cai. Rau cov ntawv thov uas muaj leej faj- muaj cov xov xwm, kho kom haum tsawg -sulfur thiab qis-phosphorus SA612 daim hlau yuav tsum tau siv, nrog rau kev kuaj HIC.
| Lwm cov hlau phaj los ntawm GNEE | ||||
| Lub npe | Khoom siv | Specification (hli) | Tos | Lus ceeb toom |
| Clad steel phaj | P265GH+410,S355JR+410,A516Gr70+316, A537CL1+304L,Q235B+304L,Q345B+304, A516Gr70(NACE)+410,A537CL1+904L, A537CL1+316L,A516Gr70+304L,A537CL1+304 ,A516Gr70+410,A516Gr70+904L |
2-300mm (raws li phaj), 1-50mm (Composited phaj) | / | UT, AR, TMCP.Normalized, Quenched thiab Tempered, Z Direction Test, Charpy V-Ntch impact TestThe Third Party Test, Coated or Shot Blasting and Painting. |
| Tsawg Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| Pressure Vessel Plate | A204 Qib B, A515 Qib 70, A537 Chav Kawm 1, SA387 Qib 11 Chav Kawm 1, P265GH, S537 Chav Kawm 2, P355Q, P275N, P355N, P690Q, Q345R, | 3 - 300 | 8650 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| High-Plate muaj zog | A514 Qib F, A572 Qib 50, A588 Qib A, S355JR, S690Q, SS400, S690QL, Q345B, Q345E | 8 - 120 | 3086.352 | Quenched thiab tempered |
| Hnav-Resistant Phaj | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched thiab tempered |
| Nkoj Phaj | ABS AH32, ABS DH32, ABS EH32, ABS FH36, ASTM A131 A, ASTM A131 EH32, ASTM A131 AH36, CCS A, CCS AH32, LR AH32, DNV A36, BV AH32 |
8 - 200 | 2853.621 | Kub dov, normalized, kub dov tswj dov, quenched thiab tempered + toughness thiab brittleness |